mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-12-18 11:00:25 +00:00
rbdplugin: idempotent DeleteVolume
When the initial DeleteVolume times out (as it does on slow clusters due to the low 10 second limit), the external-provisioner calls it again. The CSI standard requires the second call to succeed if the volume has been deleted in the meantime. This didn't work because DeleteVolume returned an error when failing to find the volume info file: rbdplugin: E1008 08:05:35.631783 1 utils.go:100] GRPC error: rbd: open err /var/lib/kubelet/plugins/csi-rbdplugin/controller/csi-rbd-622a252c-cad0-11e8-9112-deadbeef0101.json/open /var/lib/kubelet/plugins/csi-rbdplugin/controller/csi-rbd-622a252c-cad0-11e8-9112-deadbeef0101.json: no such file or directory The fix is to treat a missing volume info file as "volume already deleted" and return success. To detect this, the original os error must be wrapped, otherwise the caller of loadVolInfo cannot determine the root cause. Note that further work may be needed to make the driver really resilient, for example there are probably concurrency issues. But for now this fixes: #82
This commit is contained in:
Patrick Ohly
parent
239f295dd1
commit
25e3a961c3
9
Gopkg.lock
generated
9
Gopkg.lock
generated
@ -48,6 +48,14 @@
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revision = "e790cca94e6cc75c7064b1332e63811d4aae1a53"
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revision = "e790cca94e6cc75c7064b1332e63811d4aae1a53"
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version = "v1.1"
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version = "v1.1"
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[[projects]]
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digest = "1:7365acd48986e205ccb8652cc746f09c8b7876030d53710ea6ef7d0bd0dcd7ca"
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name = "github.com/pkg/errors"
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packages = ["."]
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pruneopts = ""
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revision = "645ef00459ed84a119197bfb8d8205042c6df63d"
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version = "v0.8.0"
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[[projects]]
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[[projects]]
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branch = "master"
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branch = "master"
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digest = "1:96d281cfaaa12ac602772da38ac85f00d59b1d3aa7bfe69d8ba334d6ee41e3e6"
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digest = "1:96d281cfaaa12ac602772da38ac85f00d59b1d3aa7bfe69d8ba334d6ee41e3e6"
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@ -179,6 +187,7 @@
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"github.com/golang/glog",
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"github.com/golang/glog",
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"github.com/kubernetes-csi/drivers/pkg/csi-common",
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"github.com/kubernetes-csi/drivers/pkg/csi-common",
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"github.com/pborman/uuid",
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"github.com/pborman/uuid",
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"github.com/pkg/errors",
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"golang.org/x/net/context",
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"golang.org/x/net/context",
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"google.golang.org/grpc/codes",
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"google.golang.org/grpc/codes",
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"google.golang.org/grpc/status",
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"google.golang.org/grpc/status",
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@ -18,6 +18,7 @@ package rbd
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import (
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import (
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"fmt"
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"fmt"
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"os"
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"os/exec"
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"os/exec"
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"path"
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"path"
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"syscall"
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"syscall"
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@ -27,6 +28,7 @@ import (
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"github.com/golang/glog"
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"github.com/golang/glog"
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"github.com/kubernetes-csi/drivers/pkg/csi-common"
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"github.com/kubernetes-csi/drivers/pkg/csi-common"
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"github.com/pborman/uuid"
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"github.com/pborman/uuid"
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"github.com/pkg/errors"
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"golang.org/x/net/context"
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"golang.org/x/net/context"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/status"
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"google.golang.org/grpc/status"
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@ -156,17 +158,24 @@ func (cs *controllerServer) DeleteVolume(ctx context.Context, req *csi.DeleteVol
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volumeID := req.GetVolumeId()
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volumeID := req.GetVolumeId()
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rbdVol := &rbdVolume{}
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rbdVol := &rbdVolume{}
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if err := loadVolInfo(volumeID, path.Join(PluginFolder, "controller"), rbdVol); err != nil {
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if err := loadVolInfo(volumeID, path.Join(PluginFolder, "controller"), rbdVol); err != nil {
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if os.IsNotExist(errors.Cause(err)) {
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// Must have been deleted already. This is not an error (idempotency!).
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return &csi.DeleteVolumeResponse{}, nil
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}
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return nil, err
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return nil, err
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}
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}
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volName := rbdVol.VolName
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volName := rbdVol.VolName
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// Deleting rbd image
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// Deleting rbd image
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glog.V(4).Infof("deleting volume %s", volName)
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glog.V(4).Infof("deleting volume %s", volName)
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if err := deleteRBDImage(rbdVol, rbdVol.AdminId, req.GetControllerDeleteSecrets()); err != nil {
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if err := deleteRBDImage(rbdVol, rbdVol.AdminId, req.GetControllerDeleteSecrets()); err != nil {
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// TODO: can we detect "already deleted" situations here and proceed?
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glog.V(3).Infof("failed to delete rbd image: %s/%s with error: %v", rbdVol.Pool, volName, err)
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glog.V(3).Infof("failed to delete rbd image: %s/%s with error: %v", rbdVol.Pool, volName, err)
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return nil, err
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return nil, err
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}
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}
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// Removing persistent storage file for the unmapped volume
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// Removing persistent storage file for the unmapped volume
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if err := deleteVolInfo(volumeID, path.Join(PluginFolder, "controller")); err != nil {
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if err := deleteVolInfo(volumeID, path.Join(PluginFolder, "controller")); err != nil {
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// TODO: we can theoretically end up here when two DeleteVolume calls
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// get invoked concurrently. Serialize?
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return nil, err
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return nil, err
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}
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}
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@ -26,6 +26,7 @@ import (
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"time"
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"time"
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"github.com/golang/glog"
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"github.com/golang/glog"
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"github.com/pkg/errors"
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"k8s.io/apimachinery/pkg/util/sets"
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"k8s.io/apimachinery/pkg/util/sets"
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"k8s.io/kubernetes/pkg/util/keymutex"
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"k8s.io/kubernetes/pkg/util/keymutex"
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)
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)
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@ -131,7 +132,7 @@ func createRBDImage(pOpts *rbdVolume, volSz int, adminId string, credentials map
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output, err = execCommand("rbd", args)
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output, err = execCommand("rbd", args)
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if err != nil {
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if err != nil {
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return fmt.Errorf("failed to create rbd image: %v, command output: %s", err, string(output))
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return errors.Wrapf(err, "failed to create rbd image, command output: %s", string(output))
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}
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}
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return nil
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return nil
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@ -308,13 +309,13 @@ func persistVolInfo(image string, persistentStoragePath string, volInfo *rbdVolu
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fp, err := os.Create(file)
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fp, err := os.Create(file)
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if err != nil {
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if err != nil {
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glog.Errorf("rbd: failed to create persistent storage file %s with error: %v\n", file, err)
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glog.Errorf("rbd: failed to create persistent storage file %s with error: %v\n", file, err)
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return fmt.Errorf("rbd: create err %s/%s", file, err)
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return errors.Wrapf(err, "rbd: create error for %s", file)
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}
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}
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defer fp.Close()
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defer fp.Close()
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encoder := json.NewEncoder(fp)
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encoder := json.NewEncoder(fp)
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if err = encoder.Encode(volInfo); err != nil {
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if err = encoder.Encode(volInfo); err != nil {
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glog.Errorf("rbd: failed to encode volInfo: %+v for file: %s with error: %v\n", volInfo, file, err)
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glog.Errorf("rbd: failed to encode volInfo: %+v for file: %s with error: %v\n", volInfo, file, err)
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return fmt.Errorf("rbd: encode err: %v", err)
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return errors.Wrap(err, "rbd: encode error")
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}
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}
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glog.Infof("rbd: successfully saved volInfo: %+v into file: %s\n", volInfo, file)
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glog.Infof("rbd: successfully saved volInfo: %+v into file: %s\n", volInfo, file)
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return nil
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return nil
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@ -324,13 +325,13 @@ func loadVolInfo(image string, persistentStoragePath string, volInfo *rbdVolume)
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file := path.Join(persistentStoragePath, image+".json")
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file := path.Join(persistentStoragePath, image+".json")
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fp, err := os.Open(file)
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fp, err := os.Open(file)
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if err != nil {
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if err != nil {
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return fmt.Errorf("rbd: open err %s/%s", file, err)
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return errors.Wrapf(err, "rbd: open error for %s", file)
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}
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}
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defer fp.Close()
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defer fp.Close()
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decoder := json.NewDecoder(fp)
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decoder := json.NewDecoder(fp)
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if err = decoder.Decode(volInfo); err != nil {
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if err = decoder.Decode(volInfo); err != nil {
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return fmt.Errorf("rbd: decode err: %v.", err)
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return errors.Wrap(err, "rbd: decode error")
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}
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}
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return nil
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return nil
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@ -342,7 +343,7 @@ func deleteVolInfo(image string, persistentStoragePath string) error {
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err := os.Remove(file)
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err := os.Remove(file)
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if err != nil {
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if err != nil {
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if err != os.ErrNotExist {
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if err != os.ErrNotExist {
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return fmt.Errorf("rbd: error removing file: %s/%s", file, err)
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return errors.Wrapf(err, "rbd: error removing file %s", file)
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}
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}
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}
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}
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return nil
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return nil
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@ -353,13 +354,13 @@ func persistSnapInfo(snapshot string, persistentStoragePath string, snapInfo *rb
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fp, err := os.Create(file)
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fp, err := os.Create(file)
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if err != nil {
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if err != nil {
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glog.Errorf("rbd: failed to create persistent storage file %s with error: %v\n", file, err)
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glog.Errorf("rbd: failed to create persistent storage file %s with error: %v\n", file, err)
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return fmt.Errorf("rbd: create err %s/%s", file, err)
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return errors.Wrapf(err, "rbd: create error for %s", file)
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}
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}
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defer fp.Close()
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defer fp.Close()
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encoder := json.NewEncoder(fp)
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encoder := json.NewEncoder(fp)
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if err = encoder.Encode(snapInfo); err != nil {
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if err = encoder.Encode(snapInfo); err != nil {
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glog.Errorf("rbd: failed to encode snapInfo: %+v for file: %s with error: %v\n", snapInfo, file, err)
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glog.Errorf("rbd: failed to encode snapInfo: %+v for file: %s with error: %v\n", snapInfo, file, err)
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return fmt.Errorf("rbd: encode err: %v", err)
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return errors.Wrap(err, "rbd: encode error")
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}
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}
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glog.Infof("rbd: successfully saved snapInfo: %+v into file: %s\n", snapInfo, file)
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glog.Infof("rbd: successfully saved snapInfo: %+v into file: %s\n", snapInfo, file)
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return nil
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return nil
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@ -369,13 +370,13 @@ func loadSnapInfo(snapshot string, persistentStoragePath string, snapInfo *rbdSn
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file := path.Join(persistentStoragePath, snapshot+".json")
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file := path.Join(persistentStoragePath, snapshot+".json")
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fp, err := os.Open(file)
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fp, err := os.Open(file)
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if err != nil {
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if err != nil {
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return fmt.Errorf("rbd: open err %s/%s", file, err)
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return errors.Wrapf(err, "rbd: open error for %s", file)
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}
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}
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defer fp.Close()
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defer fp.Close()
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decoder := json.NewDecoder(fp)
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decoder := json.NewDecoder(fp)
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if err = decoder.Decode(snapInfo); err != nil {
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if err = decoder.Decode(snapInfo); err != nil {
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return fmt.Errorf("rbd: decode err: %v.", err)
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return errors.Wrap(err, "rbd: decode error")
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}
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}
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return nil
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return nil
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}
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}
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@ -386,7 +387,7 @@ func deleteSnapInfo(snapshot string, persistentStoragePath string) error {
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err := os.Remove(file)
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err := os.Remove(file)
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if err != nil {
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if err != nil {
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if err != os.ErrNotExist {
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if err != os.ErrNotExist {
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return fmt.Errorf("rbd: error removing file: %s/%s", file, err)
|
return errors.Wrapf(err, "rbd: error removing file %s", file)
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}
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}
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}
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}
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return nil
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return nil
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@ -455,7 +456,7 @@ func protectSnapshot(pOpts *rbdSnapshot, adminId string, credentials map[string]
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output, err = execCommand("rbd", args)
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output, err = execCommand("rbd", args)
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if err != nil {
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if err != nil {
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return fmt.Errorf("failed to protect snapshot: %v, command output: %s", err, string(output))
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return errors.Wrapf(err, "failed to protect snapshot, command output: %s", string(output))
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}
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}
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return nil
|
return nil
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@ -482,7 +483,7 @@ func createSnapshot(pOpts *rbdSnapshot, adminId string, credentials map[string]s
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output, err = execCommand("rbd", args)
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output, err = execCommand("rbd", args)
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|
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if err != nil {
|
if err != nil {
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return fmt.Errorf("failed to create snapshot: %v, command output: %s", err, string(output))
|
return errors.Wrapf(err, "failed to create snapshot, command output: %s", string(output))
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}
|
}
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|
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return nil
|
return nil
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@ -509,7 +510,7 @@ func unprotectSnapshot(pOpts *rbdSnapshot, adminId string, credentials map[strin
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output, err = execCommand("rbd", args)
|
output, err = execCommand("rbd", args)
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|
|
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if err != nil {
|
if err != nil {
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return fmt.Errorf("failed to unprotect snapshot: %v, command output: %s", err, string(output))
|
return errors.Wrapf(err, "failed to unprotect snapshot, command output: %s", string(output))
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}
|
}
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|
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return nil
|
return nil
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@ -536,7 +537,7 @@ func deleteSnapshot(pOpts *rbdSnapshot, adminId string, credentials map[string]s
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output, err = execCommand("rbd", args)
|
output, err = execCommand("rbd", args)
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|
|
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if err != nil {
|
if err != nil {
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return fmt.Errorf("failed to delete snapshot: %v, command output: %s", err, string(output))
|
return errors.Wrapf(err, "failed to delete snapshot, command output: %s", string(output))
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}
|
}
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|
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return nil
|
return nil
|
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@ -563,7 +564,7 @@ func restoreSnapshot(pVolOpts *rbdVolume, pSnapOpts *rbdSnapshot, adminId string
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output, err = execCommand("rbd", args)
|
output, err = execCommand("rbd", args)
|
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|
|
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if err != nil {
|
if err != nil {
|
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return fmt.Errorf("failed to restore snapshot: %v, command output: %s", err, string(output))
|
return errors.Wrapf(err, "failed to restore snapshot, command output: %s", string(output))
|
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}
|
}
|
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|
|
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return nil
|
return nil
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24
vendor/github.com/pkg/errors/.gitignore
generated
vendored
Normal file
24
vendor/github.com/pkg/errors/.gitignore
generated
vendored
Normal file
@ -0,0 +1,24 @@
|
|||||||
|
# Compiled Object files, Static and Dynamic libs (Shared Objects)
|
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|
*.o
|
||||||
|
*.a
|
||||||
|
*.so
|
||||||
|
|
||||||
|
# Folders
|
||||||
|
_obj
|
||||||
|
_test
|
||||||
|
|
||||||
|
# Architecture specific extensions/prefixes
|
||||||
|
*.[568vq]
|
||||||
|
[568vq].out
|
||||||
|
|
||||||
|
*.cgo1.go
|
||||||
|
*.cgo2.c
|
||||||
|
_cgo_defun.c
|
||||||
|
_cgo_gotypes.go
|
||||||
|
_cgo_export.*
|
||||||
|
|
||||||
|
_testmain.go
|
||||||
|
|
||||||
|
*.exe
|
||||||
|
*.test
|
||||||
|
*.prof
|
||||||
11
vendor/github.com/pkg/errors/.travis.yml
generated
vendored
Normal file
11
vendor/github.com/pkg/errors/.travis.yml
generated
vendored
Normal file
@ -0,0 +1,11 @@
|
|||||||
|
language: go
|
||||||
|
go_import_path: github.com/pkg/errors
|
||||||
|
go:
|
||||||
|
- 1.4.3
|
||||||
|
- 1.5.4
|
||||||
|
- 1.6.2
|
||||||
|
- 1.7.1
|
||||||
|
- tip
|
||||||
|
|
||||||
|
script:
|
||||||
|
- go test -v ./...
|
||||||
23
vendor/github.com/pkg/errors/LICENSE
generated
vendored
Normal file
23
vendor/github.com/pkg/errors/LICENSE
generated
vendored
Normal file
@ -0,0 +1,23 @@
|
|||||||
|
Copyright (c) 2015, Dave Cheney <dave@cheney.net>
|
||||||
|
All rights reserved.
|
||||||
|
|
||||||
|
Redistribution and use in source and binary forms, with or without
|
||||||
|
modification, are permitted provided that the following conditions are met:
|
||||||
|
|
||||||
|
* Redistributions of source code must retain the above copyright notice, this
|
||||||
|
list of conditions and the following disclaimer.
|
||||||
|
|
||||||
|
* Redistributions in binary form must reproduce the above copyright notice,
|
||||||
|
this list of conditions and the following disclaimer in the documentation
|
||||||
|
and/or other materials provided with the distribution.
|
||||||
|
|
||||||
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||||||
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||||
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||||
|
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
||||||
|
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||||
|
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||||
|
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
||||||
|
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
||||||
|
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||||
|
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||||
52
vendor/github.com/pkg/errors/README.md
generated
vendored
Normal file
52
vendor/github.com/pkg/errors/README.md
generated
vendored
Normal file
@ -0,0 +1,52 @@
|
|||||||
|
# errors [](https://travis-ci.org/pkg/errors) [](https://ci.appveyor.com/project/davecheney/errors/branch/master) [](http://godoc.org/github.com/pkg/errors) [](https://goreportcard.com/report/github.com/pkg/errors)
|
||||||
|
|
||||||
|
Package errors provides simple error handling primitives.
|
||||||
|
|
||||||
|
`go get github.com/pkg/errors`
|
||||||
|
|
||||||
|
The traditional error handling idiom in Go is roughly akin to
|
||||||
|
```go
|
||||||
|
if err != nil {
|
||||||
|
return err
|
||||||
|
}
|
||||||
|
```
|
||||||
|
which applied recursively up the call stack results in error reports without context or debugging information. The errors package allows programmers to add context to the failure path in their code in a way that does not destroy the original value of the error.
|
||||||
|
|
||||||
|
## Adding context to an error
|
||||||
|
|
||||||
|
The errors.Wrap function returns a new error that adds context to the original error. For example
|
||||||
|
```go
|
||||||
|
_, err := ioutil.ReadAll(r)
|
||||||
|
if err != nil {
|
||||||
|
return errors.Wrap(err, "read failed")
|
||||||
|
}
|
||||||
|
```
|
||||||
|
## Retrieving the cause of an error
|
||||||
|
|
||||||
|
Using `errors.Wrap` constructs a stack of errors, adding context to the preceding error. Depending on the nature of the error it may be necessary to reverse the operation of errors.Wrap to retrieve the original error for inspection. Any error value which implements this interface can be inspected by `errors.Cause`.
|
||||||
|
```go
|
||||||
|
type causer interface {
|
||||||
|
Cause() error
|
||||||
|
}
|
||||||
|
```
|
||||||
|
`errors.Cause` will recursively retrieve the topmost error which does not implement `causer`, which is assumed to be the original cause. For example:
|
||||||
|
```go
|
||||||
|
switch err := errors.Cause(err).(type) {
|
||||||
|
case *MyError:
|
||||||
|
// handle specifically
|
||||||
|
default:
|
||||||
|
// unknown error
|
||||||
|
}
|
||||||
|
```
|
||||||
|
|
||||||
|
[Read the package documentation for more information](https://godoc.org/github.com/pkg/errors).
|
||||||
|
|
||||||
|
## Contributing
|
||||||
|
|
||||||
|
We welcome pull requests, bug fixes and issue reports. With that said, the bar for adding new symbols to this package is intentionally set high.
|
||||||
|
|
||||||
|
Before proposing a change, please discuss your change by raising an issue.
|
||||||
|
|
||||||
|
## Licence
|
||||||
|
|
||||||
|
BSD-2-Clause
|
||||||
32
vendor/github.com/pkg/errors/appveyor.yml
generated
vendored
Normal file
32
vendor/github.com/pkg/errors/appveyor.yml
generated
vendored
Normal file
@ -0,0 +1,32 @@
|
|||||||
|
version: build-{build}.{branch}
|
||||||
|
|
||||||
|
clone_folder: C:\gopath\src\github.com\pkg\errors
|
||||||
|
shallow_clone: true # for startup speed
|
||||||
|
|
||||||
|
environment:
|
||||||
|
GOPATH: C:\gopath
|
||||||
|
|
||||||
|
platform:
|
||||||
|
- x64
|
||||||
|
|
||||||
|
# http://www.appveyor.com/docs/installed-software
|
||||||
|
install:
|
||||||
|
# some helpful output for debugging builds
|
||||||
|
- go version
|
||||||
|
- go env
|
||||||
|
# pre-installed MinGW at C:\MinGW is 32bit only
|
||||||
|
# but MSYS2 at C:\msys64 has mingw64
|
||||||
|
- set PATH=C:\msys64\mingw64\bin;%PATH%
|
||||||
|
- gcc --version
|
||||||
|
- g++ --version
|
||||||
|
|
||||||
|
build_script:
|
||||||
|
- go install -v ./...
|
||||||
|
|
||||||
|
test_script:
|
||||||
|
- set PATH=C:\gopath\bin;%PATH%
|
||||||
|
- go test -v ./...
|
||||||
|
|
||||||
|
#artifacts:
|
||||||
|
# - path: '%GOPATH%\bin\*.exe'
|
||||||
|
deploy: off
|
||||||
59
vendor/github.com/pkg/errors/bench_test.go
generated
vendored
Normal file
59
vendor/github.com/pkg/errors/bench_test.go
generated
vendored
Normal file
@ -0,0 +1,59 @@
|
|||||||
|
// +build go1.7
|
||||||
|
|
||||||
|
package errors
|
||||||
|
|
||||||
|
import (
|
||||||
|
"fmt"
|
||||||
|
"testing"
|
||||||
|
|
||||||
|
stderrors "errors"
|
||||||
|
)
|
||||||
|
|
||||||
|
func noErrors(at, depth int) error {
|
||||||
|
if at >= depth {
|
||||||
|
return stderrors.New("no error")
|
||||||
|
}
|
||||||
|
return noErrors(at+1, depth)
|
||||||
|
}
|
||||||
|
func yesErrors(at, depth int) error {
|
||||||
|
if at >= depth {
|
||||||
|
return New("ye error")
|
||||||
|
}
|
||||||
|
return yesErrors(at+1, depth)
|
||||||
|
}
|
||||||
|
|
||||||
|
func BenchmarkErrors(b *testing.B) {
|
||||||
|
var toperr error
|
||||||
|
type run struct {
|
||||||
|
stack int
|
||||||
|
std bool
|
||||||
|
}
|
||||||
|
runs := []run{
|
||||||
|
{10, false},
|
||||||
|
{10, true},
|
||||||
|
{100, false},
|
||||||
|
{100, true},
|
||||||
|
{1000, false},
|
||||||
|
{1000, true},
|
||||||
|
}
|
||||||
|
for _, r := range runs {
|
||||||
|
part := "pkg/errors"
|
||||||
|
if r.std {
|
||||||
|
part = "errors"
|
||||||
|
}
|
||||||
|
name := fmt.Sprintf("%s-stack-%d", part, r.stack)
|
||||||
|
b.Run(name, func(b *testing.B) {
|
||||||
|
var err error
|
||||||
|
f := yesErrors
|
||||||
|
if r.std {
|
||||||
|
f = noErrors
|
||||||
|
}
|
||||||
|
b.ReportAllocs()
|
||||||
|
for i := 0; i < b.N; i++ {
|
||||||
|
err = f(0, r.stack)
|
||||||
|
}
|
||||||
|
b.StopTimer()
|
||||||
|
toperr = err
|
||||||
|
})
|
||||||
|
}
|
||||||
|
}
|
||||||
269
vendor/github.com/pkg/errors/errors.go
generated
vendored
Normal file
269
vendor/github.com/pkg/errors/errors.go
generated
vendored
Normal file
@ -0,0 +1,269 @@
|
|||||||
|
// Package errors provides simple error handling primitives.
|
||||||
|
//
|
||||||
|
// The traditional error handling idiom in Go is roughly akin to
|
||||||
|
//
|
||||||
|
// if err != nil {
|
||||||
|
// return err
|
||||||
|
// }
|
||||||
|
//
|
||||||
|
// which applied recursively up the call stack results in error reports
|
||||||
|
// without context or debugging information. The errors package allows
|
||||||
|
// programmers to add context to the failure path in their code in a way
|
||||||
|
// that does not destroy the original value of the error.
|
||||||
|
//
|
||||||
|
// Adding context to an error
|
||||||
|
//
|
||||||
|
// The errors.Wrap function returns a new error that adds context to the
|
||||||
|
// original error by recording a stack trace at the point Wrap is called,
|
||||||
|
// and the supplied message. For example
|
||||||
|
//
|
||||||
|
// _, err := ioutil.ReadAll(r)
|
||||||
|
// if err != nil {
|
||||||
|
// return errors.Wrap(err, "read failed")
|
||||||
|
// }
|
||||||
|
//
|
||||||
|
// If additional control is required the errors.WithStack and errors.WithMessage
|
||||||
|
// functions destructure errors.Wrap into its component operations of annotating
|
||||||
|
// an error with a stack trace and an a message, respectively.
|
||||||
|
//
|
||||||
|
// Retrieving the cause of an error
|
||||||
|
//
|
||||||
|
// Using errors.Wrap constructs a stack of errors, adding context to the
|
||||||
|
// preceding error. Depending on the nature of the error it may be necessary
|
||||||
|
// to reverse the operation of errors.Wrap to retrieve the original error
|
||||||
|
// for inspection. Any error value which implements this interface
|
||||||
|
//
|
||||||
|
// type causer interface {
|
||||||
|
// Cause() error
|
||||||
|
// }
|
||||||
|
//
|
||||||
|
// can be inspected by errors.Cause. errors.Cause will recursively retrieve
|
||||||
|
// the topmost error which does not implement causer, which is assumed to be
|
||||||
|
// the original cause. For example:
|
||||||
|
//
|
||||||
|
// switch err := errors.Cause(err).(type) {
|
||||||
|
// case *MyError:
|
||||||
|
// // handle specifically
|
||||||
|
// default:
|
||||||
|
// // unknown error
|
||||||
|
// }
|
||||||
|
//
|
||||||
|
// causer interface is not exported by this package, but is considered a part
|
||||||
|
// of stable public API.
|
||||||
|
//
|
||||||
|
// Formatted printing of errors
|
||||||
|
//
|
||||||
|
// All error values returned from this package implement fmt.Formatter and can
|
||||||
|
// be formatted by the fmt package. The following verbs are supported
|
||||||
|
//
|
||||||
|
// %s print the error. If the error has a Cause it will be
|
||||||
|
// printed recursively
|
||||||
|
// %v see %s
|
||||||
|
// %+v extended format. Each Frame of the error's StackTrace will
|
||||||
|
// be printed in detail.
|
||||||
|
//
|
||||||
|
// Retrieving the stack trace of an error or wrapper
|
||||||
|
//
|
||||||
|
// New, Errorf, Wrap, and Wrapf record a stack trace at the point they are
|
||||||
|
// invoked. This information can be retrieved with the following interface.
|
||||||
|
//
|
||||||
|
// type stackTracer interface {
|
||||||
|
// StackTrace() errors.StackTrace
|
||||||
|
// }
|
||||||
|
//
|
||||||
|
// Where errors.StackTrace is defined as
|
||||||
|
//
|
||||||
|
// type StackTrace []Frame
|
||||||
|
//
|
||||||
|
// The Frame type represents a call site in the stack trace. Frame supports
|
||||||
|
// the fmt.Formatter interface that can be used for printing information about
|
||||||
|
// the stack trace of this error. For example:
|
||||||
|
//
|
||||||
|
// if err, ok := err.(stackTracer); ok {
|
||||||
|
// for _, f := range err.StackTrace() {
|
||||||
|
// fmt.Printf("%+s:%d", f)
|
||||||
|
// }
|
||||||
|
// }
|
||||||
|
//
|
||||||
|
// stackTracer interface is not exported by this package, but is considered a part
|
||||||
|
// of stable public API.
|
||||||
|
//
|
||||||
|
// See the documentation for Frame.Format for more details.
|
||||||
|
package errors
|
||||||
|
|
||||||
|
import (
|
||||||
|
"fmt"
|
||||||
|
"io"
|
||||||
|
)
|
||||||
|
|
||||||
|
// New returns an error with the supplied message.
|
||||||
|
// New also records the stack trace at the point it was called.
|
||||||
|
func New(message string) error {
|
||||||
|
return &fundamental{
|
||||||
|
msg: message,
|
||||||
|
stack: callers(),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// Errorf formats according to a format specifier and returns the string
|
||||||
|
// as a value that satisfies error.
|
||||||
|
// Errorf also records the stack trace at the point it was called.
|
||||||
|
func Errorf(format string, args ...interface{}) error {
|
||||||
|
return &fundamental{
|
||||||
|
msg: fmt.Sprintf(format, args...),
|
||||||
|
stack: callers(),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// fundamental is an error that has a message and a stack, but no caller.
|
||||||
|
type fundamental struct {
|
||||||
|
msg string
|
||||||
|
*stack
|
||||||
|
}
|
||||||
|
|
||||||
|
func (f *fundamental) Error() string { return f.msg }
|
||||||
|
|
||||||
|
func (f *fundamental) Format(s fmt.State, verb rune) {
|
||||||
|
switch verb {
|
||||||
|
case 'v':
|
||||||
|
if s.Flag('+') {
|
||||||
|
io.WriteString(s, f.msg)
|
||||||
|
f.stack.Format(s, verb)
|
||||||
|
return
|
||||||
|
}
|
||||||
|
fallthrough
|
||||||
|
case 's':
|
||||||
|
io.WriteString(s, f.msg)
|
||||||
|
case 'q':
|
||||||
|
fmt.Fprintf(s, "%q", f.msg)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// WithStack annotates err with a stack trace at the point WithStack was called.
|
||||||
|
// If err is nil, WithStack returns nil.
|
||||||
|
func WithStack(err error) error {
|
||||||
|
if err == nil {
|
||||||
|
return nil
|
||||||
|
}
|
||||||
|
return &withStack{
|
||||||
|
err,
|
||||||
|
callers(),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
type withStack struct {
|
||||||
|
error
|
||||||
|
*stack
|
||||||
|
}
|
||||||
|
|
||||||
|
func (w *withStack) Cause() error { return w.error }
|
||||||
|
|
||||||
|
func (w *withStack) Format(s fmt.State, verb rune) {
|
||||||
|
switch verb {
|
||||||
|
case 'v':
|
||||||
|
if s.Flag('+') {
|
||||||
|
fmt.Fprintf(s, "%+v", w.Cause())
|
||||||
|
w.stack.Format(s, verb)
|
||||||
|
return
|
||||||
|
}
|
||||||
|
fallthrough
|
||||||
|
case 's':
|
||||||
|
io.WriteString(s, w.Error())
|
||||||
|
case 'q':
|
||||||
|
fmt.Fprintf(s, "%q", w.Error())
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// Wrap returns an error annotating err with a stack trace
|
||||||
|
// at the point Wrap is called, and the supplied message.
|
||||||
|
// If err is nil, Wrap returns nil.
|
||||||
|
func Wrap(err error, message string) error {
|
||||||
|
if err == nil {
|
||||||
|
return nil
|
||||||
|
}
|
||||||
|
err = &withMessage{
|
||||||
|
cause: err,
|
||||||
|
msg: message,
|
||||||
|
}
|
||||||
|
return &withStack{
|
||||||
|
err,
|
||||||
|
callers(),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// Wrapf returns an error annotating err with a stack trace
|
||||||
|
// at the point Wrapf is call, and the format specifier.
|
||||||
|
// If err is nil, Wrapf returns nil.
|
||||||
|
func Wrapf(err error, format string, args ...interface{}) error {
|
||||||
|
if err == nil {
|
||||||
|
return nil
|
||||||
|
}
|
||||||
|
err = &withMessage{
|
||||||
|
cause: err,
|
||||||
|
msg: fmt.Sprintf(format, args...),
|
||||||
|
}
|
||||||
|
return &withStack{
|
||||||
|
err,
|
||||||
|
callers(),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// WithMessage annotates err with a new message.
|
||||||
|
// If err is nil, WithMessage returns nil.
|
||||||
|
func WithMessage(err error, message string) error {
|
||||||
|
if err == nil {
|
||||||
|
return nil
|
||||||
|
}
|
||||||
|
return &withMessage{
|
||||||
|
cause: err,
|
||||||
|
msg: message,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
type withMessage struct {
|
||||||
|
cause error
|
||||||
|
msg string
|
||||||
|
}
|
||||||
|
|
||||||
|
func (w *withMessage) Error() string { return w.msg + ": " + w.cause.Error() }
|
||||||
|
func (w *withMessage) Cause() error { return w.cause }
|
||||||
|
|
||||||
|
func (w *withMessage) Format(s fmt.State, verb rune) {
|
||||||
|
switch verb {
|
||||||
|
case 'v':
|
||||||
|
if s.Flag('+') {
|
||||||
|
fmt.Fprintf(s, "%+v\n", w.Cause())
|
||||||
|
io.WriteString(s, w.msg)
|
||||||
|
return
|
||||||
|
}
|
||||||
|
fallthrough
|
||||||
|
case 's', 'q':
|
||||||
|
io.WriteString(s, w.Error())
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// Cause returns the underlying cause of the error, if possible.
|
||||||
|
// An error value has a cause if it implements the following
|
||||||
|
// interface:
|
||||||
|
//
|
||||||
|
// type causer interface {
|
||||||
|
// Cause() error
|
||||||
|
// }
|
||||||
|
//
|
||||||
|
// If the error does not implement Cause, the original error will
|
||||||
|
// be returned. If the error is nil, nil will be returned without further
|
||||||
|
// investigation.
|
||||||
|
func Cause(err error) error {
|
||||||
|
type causer interface {
|
||||||
|
Cause() error
|
||||||
|
}
|
||||||
|
|
||||||
|
for err != nil {
|
||||||
|
cause, ok := err.(causer)
|
||||||
|
if !ok {
|
||||||
|
break
|
||||||
|
}
|
||||||
|
err = cause.Cause()
|
||||||
|
}
|
||||||
|
return err
|
||||||
|
}
|
||||||
226
vendor/github.com/pkg/errors/errors_test.go
generated
vendored
Normal file
226
vendor/github.com/pkg/errors/errors_test.go
generated
vendored
Normal file
@ -0,0 +1,226 @@
|
|||||||
|
package errors
|
||||||
|
|
||||||
|
import (
|
||||||
|
"errors"
|
||||||
|
"fmt"
|
||||||
|
"io"
|
||||||
|
"reflect"
|
||||||
|
"testing"
|
||||||
|
)
|
||||||
|
|
||||||
|
func TestNew(t *testing.T) {
|
||||||
|
tests := []struct {
|
||||||
|
err string
|
||||||
|
want error
|
||||||
|
}{
|
||||||
|
{"", fmt.Errorf("")},
|
||||||
|
{"foo", fmt.Errorf("foo")},
|
||||||
|
{"foo", New("foo")},
|
||||||
|
{"string with format specifiers: %v", errors.New("string with format specifiers: %v")},
|
||||||
|
}
|
||||||
|
|
||||||
|
for _, tt := range tests {
|
||||||
|
got := New(tt.err)
|
||||||
|
if got.Error() != tt.want.Error() {
|
||||||
|
t.Errorf("New.Error(): got: %q, want %q", got, tt.want)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func TestWrapNil(t *testing.T) {
|
||||||
|
got := Wrap(nil, "no error")
|
||||||
|
if got != nil {
|
||||||
|
t.Errorf("Wrap(nil, \"no error\"): got %#v, expected nil", got)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func TestWrap(t *testing.T) {
|
||||||
|
tests := []struct {
|
||||||
|
err error
|
||||||
|
message string
|
||||||
|
want string
|
||||||
|
}{
|
||||||
|
{io.EOF, "read error", "read error: EOF"},
|
||||||
|
{Wrap(io.EOF, "read error"), "client error", "client error: read error: EOF"},
|
||||||
|
}
|
||||||
|
|
||||||
|
for _, tt := range tests {
|
||||||
|
got := Wrap(tt.err, tt.message).Error()
|
||||||
|
if got != tt.want {
|
||||||
|
t.Errorf("Wrap(%v, %q): got: %v, want %v", tt.err, tt.message, got, tt.want)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
type nilError struct{}
|
||||||
|
|
||||||
|
func (nilError) Error() string { return "nil error" }
|
||||||
|
|
||||||
|
func TestCause(t *testing.T) {
|
||||||
|
x := New("error")
|
||||||
|
tests := []struct {
|
||||||
|
err error
|
||||||
|
want error
|
||||||
|
}{{
|
||||||
|
// nil error is nil
|
||||||
|
err: nil,
|
||||||
|
want: nil,
|
||||||
|
}, {
|
||||||
|
// explicit nil error is nil
|
||||||
|
err: (error)(nil),
|
||||||
|
want: nil,
|
||||||
|
}, {
|
||||||
|
// typed nil is nil
|
||||||
|
err: (*nilError)(nil),
|
||||||
|
want: (*nilError)(nil),
|
||||||
|
}, {
|
||||||
|
// uncaused error is unaffected
|
||||||
|
err: io.EOF,
|
||||||
|
want: io.EOF,
|
||||||
|
}, {
|
||||||
|
// caused error returns cause
|
||||||
|
err: Wrap(io.EOF, "ignored"),
|
||||||
|
want: io.EOF,
|
||||||
|
}, {
|
||||||
|
err: x, // return from errors.New
|
||||||
|
want: x,
|
||||||
|
}, {
|
||||||
|
WithMessage(nil, "whoops"),
|
||||||
|
nil,
|
||||||
|
}, {
|
||||||
|
WithMessage(io.EOF, "whoops"),
|
||||||
|
io.EOF,
|
||||||
|
}, {
|
||||||
|
WithStack(nil),
|
||||||
|
nil,
|
||||||
|
}, {
|
||||||
|
WithStack(io.EOF),
|
||||||
|
io.EOF,
|
||||||
|
}}
|
||||||
|
|
||||||
|
for i, tt := range tests {
|
||||||
|
got := Cause(tt.err)
|
||||||
|
if !reflect.DeepEqual(got, tt.want) {
|
||||||
|
t.Errorf("test %d: got %#v, want %#v", i+1, got, tt.want)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func TestWrapfNil(t *testing.T) {
|
||||||
|
got := Wrapf(nil, "no error")
|
||||||
|
if got != nil {
|
||||||
|
t.Errorf("Wrapf(nil, \"no error\"): got %#v, expected nil", got)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func TestWrapf(t *testing.T) {
|
||||||
|
tests := []struct {
|
||||||
|
err error
|
||||||
|
message string
|
||||||
|
want string
|
||||||
|
}{
|
||||||
|
{io.EOF, "read error", "read error: EOF"},
|
||||||
|
{Wrapf(io.EOF, "read error without format specifiers"), "client error", "client error: read error without format specifiers: EOF"},
|
||||||
|
{Wrapf(io.EOF, "read error with %d format specifier", 1), "client error", "client error: read error with 1 format specifier: EOF"},
|
||||||
|
}
|
||||||
|
|
||||||
|
for _, tt := range tests {
|
||||||
|
got := Wrapf(tt.err, tt.message).Error()
|
||||||
|
if got != tt.want {
|
||||||
|
t.Errorf("Wrapf(%v, %q): got: %v, want %v", tt.err, tt.message, got, tt.want)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func TestErrorf(t *testing.T) {
|
||||||
|
tests := []struct {
|
||||||
|
err error
|
||||||
|
want string
|
||||||
|
}{
|
||||||
|
{Errorf("read error without format specifiers"), "read error without format specifiers"},
|
||||||
|
{Errorf("read error with %d format specifier", 1), "read error with 1 format specifier"},
|
||||||
|
}
|
||||||
|
|
||||||
|
for _, tt := range tests {
|
||||||
|
got := tt.err.Error()
|
||||||
|
if got != tt.want {
|
||||||
|
t.Errorf("Errorf(%v): got: %q, want %q", tt.err, got, tt.want)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func TestWithStackNil(t *testing.T) {
|
||||||
|
got := WithStack(nil)
|
||||||
|
if got != nil {
|
||||||
|
t.Errorf("WithStack(nil): got %#v, expected nil", got)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func TestWithStack(t *testing.T) {
|
||||||
|
tests := []struct {
|
||||||
|
err error
|
||||||
|
want string
|
||||||
|
}{
|
||||||
|
{io.EOF, "EOF"},
|
||||||
|
{WithStack(io.EOF), "EOF"},
|
||||||
|
}
|
||||||
|
|
||||||
|
for _, tt := range tests {
|
||||||
|
got := WithStack(tt.err).Error()
|
||||||
|
if got != tt.want {
|
||||||
|
t.Errorf("WithStack(%v): got: %v, want %v", tt.err, got, tt.want)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func TestWithMessageNil(t *testing.T) {
|
||||||
|
got := WithMessage(nil, "no error")
|
||||||
|
if got != nil {
|
||||||
|
t.Errorf("WithMessage(nil, \"no error\"): got %#v, expected nil", got)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func TestWithMessage(t *testing.T) {
|
||||||
|
tests := []struct {
|
||||||
|
err error
|
||||||
|
message string
|
||||||
|
want string
|
||||||
|
}{
|
||||||
|
{io.EOF, "read error", "read error: EOF"},
|
||||||
|
{WithMessage(io.EOF, "read error"), "client error", "client error: read error: EOF"},
|
||||||
|
}
|
||||||
|
|
||||||
|
for _, tt := range tests {
|
||||||
|
got := WithMessage(tt.err, tt.message).Error()
|
||||||
|
if got != tt.want {
|
||||||
|
t.Errorf("WithMessage(%v, %q): got: %q, want %q", tt.err, tt.message, got, tt.want)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
// errors.New, etc values are not expected to be compared by value
|
||||||
|
// but the change in errors#27 made them incomparable. Assert that
|
||||||
|
// various kinds of errors have a functional equality operator, even
|
||||||
|
// if the result of that equality is always false.
|
||||||
|
func TestErrorEquality(t *testing.T) {
|
||||||
|
vals := []error{
|
||||||
|
nil,
|
||||||
|
io.EOF,
|
||||||
|
errors.New("EOF"),
|
||||||
|
New("EOF"),
|
||||||
|
Errorf("EOF"),
|
||||||
|
Wrap(io.EOF, "EOF"),
|
||||||
|
Wrapf(io.EOF, "EOF%d", 2),
|
||||||
|
WithMessage(nil, "whoops"),
|
||||||
|
WithMessage(io.EOF, "whoops"),
|
||||||
|
WithStack(io.EOF),
|
||||||
|
WithStack(nil),
|
||||||
|
}
|
||||||
|
|
||||||
|
for i := range vals {
|
||||||
|
for j := range vals {
|
||||||
|
_ = vals[i] == vals[j] // mustn't panic
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
205
vendor/github.com/pkg/errors/example_test.go
generated
vendored
Normal file
205
vendor/github.com/pkg/errors/example_test.go
generated
vendored
Normal file
@ -0,0 +1,205 @@
|
|||||||
|
package errors_test
|
||||||
|
|
||||||
|
import (
|
||||||
|
"fmt"
|
||||||
|
|
||||||
|
"github.com/pkg/errors"
|
||||||
|
)
|
||||||
|
|
||||||
|
func ExampleNew() {
|
||||||
|
err := errors.New("whoops")
|
||||||
|
fmt.Println(err)
|
||||||
|
|
||||||
|
// Output: whoops
|
||||||
|
}
|
||||||
|
|
||||||
|
func ExampleNew_printf() {
|
||||||
|
err := errors.New("whoops")
|
||||||
|
fmt.Printf("%+v", err)
|
||||||
|
|
||||||
|
// Example output:
|
||||||
|
// whoops
|
||||||
|
// github.com/pkg/errors_test.ExampleNew_printf
|
||||||
|
// /home/dfc/src/github.com/pkg/errors/example_test.go:17
|
||||||
|
// testing.runExample
|
||||||
|
// /home/dfc/go/src/testing/example.go:114
|
||||||
|
// testing.RunExamples
|
||||||
|
// /home/dfc/go/src/testing/example.go:38
|
||||||
|
// testing.(*M).Run
|
||||||
|
// /home/dfc/go/src/testing/testing.go:744
|
||||||
|
// main.main
|
||||||
|
// /github.com/pkg/errors/_test/_testmain.go:106
|
||||||
|
// runtime.main
|
||||||
|
// /home/dfc/go/src/runtime/proc.go:183
|
||||||
|
// runtime.goexit
|
||||||
|
// /home/dfc/go/src/runtime/asm_amd64.s:2059
|
||||||
|
}
|
||||||
|
|
||||||
|
func ExampleWithMessage() {
|
||||||
|
cause := errors.New("whoops")
|
||||||
|
err := errors.WithMessage(cause, "oh noes")
|
||||||
|
fmt.Println(err)
|
||||||
|
|
||||||
|
// Output: oh noes: whoops
|
||||||
|
}
|
||||||
|
|
||||||
|
func ExampleWithStack() {
|
||||||
|
cause := errors.New("whoops")
|
||||||
|
err := errors.WithStack(cause)
|
||||||
|
fmt.Println(err)
|
||||||
|
|
||||||
|
// Output: whoops
|
||||||
|
}
|
||||||
|
|
||||||
|
func ExampleWithStack_printf() {
|
||||||
|
cause := errors.New("whoops")
|
||||||
|
err := errors.WithStack(cause)
|
||||||
|
fmt.Printf("%+v", err)
|
||||||
|
|
||||||
|
// Example Output:
|
||||||
|
// whoops
|
||||||
|
// github.com/pkg/errors_test.ExampleWithStack_printf
|
||||||
|
// /home/fabstu/go/src/github.com/pkg/errors/example_test.go:55
|
||||||
|
// testing.runExample
|
||||||
|
// /usr/lib/go/src/testing/example.go:114
|
||||||
|
// testing.RunExamples
|
||||||
|
// /usr/lib/go/src/testing/example.go:38
|
||||||
|
// testing.(*M).Run
|
||||||
|
// /usr/lib/go/src/testing/testing.go:744
|
||||||
|
// main.main
|
||||||
|
// github.com/pkg/errors/_test/_testmain.go:106
|
||||||
|
// runtime.main
|
||||||
|
// /usr/lib/go/src/runtime/proc.go:183
|
||||||
|
// runtime.goexit
|
||||||
|
// /usr/lib/go/src/runtime/asm_amd64.s:2086
|
||||||
|
// github.com/pkg/errors_test.ExampleWithStack_printf
|
||||||
|
// /home/fabstu/go/src/github.com/pkg/errors/example_test.go:56
|
||||||
|
// testing.runExample
|
||||||
|
// /usr/lib/go/src/testing/example.go:114
|
||||||
|
// testing.RunExamples
|
||||||
|
// /usr/lib/go/src/testing/example.go:38
|
||||||
|
// testing.(*M).Run
|
||||||
|
// /usr/lib/go/src/testing/testing.go:744
|
||||||
|
// main.main
|
||||||
|
// github.com/pkg/errors/_test/_testmain.go:106
|
||||||
|
// runtime.main
|
||||||
|
// /usr/lib/go/src/runtime/proc.go:183
|
||||||
|
// runtime.goexit
|
||||||
|
// /usr/lib/go/src/runtime/asm_amd64.s:2086
|
||||||
|
}
|
||||||
|
|
||||||
|
func ExampleWrap() {
|
||||||
|
cause := errors.New("whoops")
|
||||||
|
err := errors.Wrap(cause, "oh noes")
|
||||||
|
fmt.Println(err)
|
||||||
|
|
||||||
|
// Output: oh noes: whoops
|
||||||
|
}
|
||||||
|
|
||||||
|
func fn() error {
|
||||||
|
e1 := errors.New("error")
|
||||||
|
e2 := errors.Wrap(e1, "inner")
|
||||||
|
e3 := errors.Wrap(e2, "middle")
|
||||||
|
return errors.Wrap(e3, "outer")
|
||||||
|
}
|
||||||
|
|
||||||
|
func ExampleCause() {
|
||||||
|
err := fn()
|
||||||
|
fmt.Println(err)
|
||||||
|
fmt.Println(errors.Cause(err))
|
||||||
|
|
||||||
|
// Output: outer: middle: inner: error
|
||||||
|
// error
|
||||||
|
}
|
||||||
|
|
||||||
|
func ExampleWrap_extended() {
|
||||||
|
err := fn()
|
||||||
|
fmt.Printf("%+v\n", err)
|
||||||
|
|
||||||
|
// Example output:
|
||||||
|
// error
|
||||||
|
// github.com/pkg/errors_test.fn
|
||||||
|
// /home/dfc/src/github.com/pkg/errors/example_test.go:47
|
||||||
|
// github.com/pkg/errors_test.ExampleCause_printf
|
||||||
|
// /home/dfc/src/github.com/pkg/errors/example_test.go:63
|
||||||
|
// testing.runExample
|
||||||
|
// /home/dfc/go/src/testing/example.go:114
|
||||||
|
// testing.RunExamples
|
||||||
|
// /home/dfc/go/src/testing/example.go:38
|
||||||
|
// testing.(*M).Run
|
||||||
|
// /home/dfc/go/src/testing/testing.go:744
|
||||||
|
// main.main
|
||||||
|
// /github.com/pkg/errors/_test/_testmain.go:104
|
||||||
|
// runtime.main
|
||||||
|
// /home/dfc/go/src/runtime/proc.go:183
|
||||||
|
// runtime.goexit
|
||||||
|
// /home/dfc/go/src/runtime/asm_amd64.s:2059
|
||||||
|
// github.com/pkg/errors_test.fn
|
||||||
|
// /home/dfc/src/github.com/pkg/errors/example_test.go:48: inner
|
||||||
|
// github.com/pkg/errors_test.fn
|
||||||
|
// /home/dfc/src/github.com/pkg/errors/example_test.go:49: middle
|
||||||
|
// github.com/pkg/errors_test.fn
|
||||||
|
// /home/dfc/src/github.com/pkg/errors/example_test.go:50: outer
|
||||||
|
}
|
||||||
|
|
||||||
|
func ExampleWrapf() {
|
||||||
|
cause := errors.New("whoops")
|
||||||
|
err := errors.Wrapf(cause, "oh noes #%d", 2)
|
||||||
|
fmt.Println(err)
|
||||||
|
|
||||||
|
// Output: oh noes #2: whoops
|
||||||
|
}
|
||||||
|
|
||||||
|
func ExampleErrorf_extended() {
|
||||||
|
err := errors.Errorf("whoops: %s", "foo")
|
||||||
|
fmt.Printf("%+v", err)
|
||||||
|
|
||||||
|
// Example output:
|
||||||
|
// whoops: foo
|
||||||
|
// github.com/pkg/errors_test.ExampleErrorf
|
||||||
|
// /home/dfc/src/github.com/pkg/errors/example_test.go:101
|
||||||
|
// testing.runExample
|
||||||
|
// /home/dfc/go/src/testing/example.go:114
|
||||||
|
// testing.RunExamples
|
||||||
|
// /home/dfc/go/src/testing/example.go:38
|
||||||
|
// testing.(*M).Run
|
||||||
|
// /home/dfc/go/src/testing/testing.go:744
|
||||||
|
// main.main
|
||||||
|
// /github.com/pkg/errors/_test/_testmain.go:102
|
||||||
|
// runtime.main
|
||||||
|
// /home/dfc/go/src/runtime/proc.go:183
|
||||||
|
// runtime.goexit
|
||||||
|
// /home/dfc/go/src/runtime/asm_amd64.s:2059
|
||||||
|
}
|
||||||
|
|
||||||
|
func Example_stackTrace() {
|
||||||
|
type stackTracer interface {
|
||||||
|
StackTrace() errors.StackTrace
|
||||||
|
}
|
||||||
|
|
||||||
|
err, ok := errors.Cause(fn()).(stackTracer)
|
||||||
|
if !ok {
|
||||||
|
panic("oops, err does not implement stackTracer")
|
||||||
|
}
|
||||||
|
|
||||||
|
st := err.StackTrace()
|
||||||
|
fmt.Printf("%+v", st[0:2]) // top two frames
|
||||||
|
|
||||||
|
// Example output:
|
||||||
|
// github.com/pkg/errors_test.fn
|
||||||
|
// /home/dfc/src/github.com/pkg/errors/example_test.go:47
|
||||||
|
// github.com/pkg/errors_test.Example_stackTrace
|
||||||
|
// /home/dfc/src/github.com/pkg/errors/example_test.go:127
|
||||||
|
}
|
||||||
|
|
||||||
|
func ExampleCause_printf() {
|
||||||
|
err := errors.Wrap(func() error {
|
||||||
|
return func() error {
|
||||||
|
return errors.Errorf("hello %s", fmt.Sprintf("world"))
|
||||||
|
}()
|
||||||
|
}(), "failed")
|
||||||
|
|
||||||
|
fmt.Printf("%v", err)
|
||||||
|
|
||||||
|
// Output: failed: hello world
|
||||||
|
}
|
||||||
535
vendor/github.com/pkg/errors/format_test.go
generated
vendored
Normal file
535
vendor/github.com/pkg/errors/format_test.go
generated
vendored
Normal file
@ -0,0 +1,535 @@
|
|||||||
|
package errors
|
||||||
|
|
||||||
|
import (
|
||||||
|
"errors"
|
||||||
|
"fmt"
|
||||||
|
"io"
|
||||||
|
"regexp"
|
||||||
|
"strings"
|
||||||
|
"testing"
|
||||||
|
)
|
||||||
|
|
||||||
|
func TestFormatNew(t *testing.T) {
|
||||||
|
tests := []struct {
|
||||||
|
error
|
||||||
|
format string
|
||||||
|
want string
|
||||||
|
}{{
|
||||||
|
New("error"),
|
||||||
|
"%s",
|
||||||
|
"error",
|
||||||
|
}, {
|
||||||
|
New("error"),
|
||||||
|
"%v",
|
||||||
|
"error",
|
||||||
|
}, {
|
||||||
|
New("error"),
|
||||||
|
"%+v",
|
||||||
|
"error\n" +
|
||||||
|
"github.com/pkg/errors.TestFormatNew\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/format_test.go:26",
|
||||||
|
}, {
|
||||||
|
New("error"),
|
||||||
|
"%q",
|
||||||
|
`"error"`,
|
||||||
|
}}
|
||||||
|
|
||||||
|
for i, tt := range tests {
|
||||||
|
testFormatRegexp(t, i, tt.error, tt.format, tt.want)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func TestFormatErrorf(t *testing.T) {
|
||||||
|
tests := []struct {
|
||||||
|
error
|
||||||
|
format string
|
||||||
|
want string
|
||||||
|
}{{
|
||||||
|
Errorf("%s", "error"),
|
||||||
|
"%s",
|
||||||
|
"error",
|
||||||
|
}, {
|
||||||
|
Errorf("%s", "error"),
|
||||||
|
"%v",
|
||||||
|
"error",
|
||||||
|
}, {
|
||||||
|
Errorf("%s", "error"),
|
||||||
|
"%+v",
|
||||||
|
"error\n" +
|
||||||
|
"github.com/pkg/errors.TestFormatErrorf\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/format_test.go:56",
|
||||||
|
}}
|
||||||
|
|
||||||
|
for i, tt := range tests {
|
||||||
|
testFormatRegexp(t, i, tt.error, tt.format, tt.want)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func TestFormatWrap(t *testing.T) {
|
||||||
|
tests := []struct {
|
||||||
|
error
|
||||||
|
format string
|
||||||
|
want string
|
||||||
|
}{{
|
||||||
|
Wrap(New("error"), "error2"),
|
||||||
|
"%s",
|
||||||
|
"error2: error",
|
||||||
|
}, {
|
||||||
|
Wrap(New("error"), "error2"),
|
||||||
|
"%v",
|
||||||
|
"error2: error",
|
||||||
|
}, {
|
||||||
|
Wrap(New("error"), "error2"),
|
||||||
|
"%+v",
|
||||||
|
"error\n" +
|
||||||
|
"github.com/pkg/errors.TestFormatWrap\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/format_test.go:82",
|
||||||
|
}, {
|
||||||
|
Wrap(io.EOF, "error"),
|
||||||
|
"%s",
|
||||||
|
"error: EOF",
|
||||||
|
}, {
|
||||||
|
Wrap(io.EOF, "error"),
|
||||||
|
"%v",
|
||||||
|
"error: EOF",
|
||||||
|
}, {
|
||||||
|
Wrap(io.EOF, "error"),
|
||||||
|
"%+v",
|
||||||
|
"EOF\n" +
|
||||||
|
"error\n" +
|
||||||
|
"github.com/pkg/errors.TestFormatWrap\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/format_test.go:96",
|
||||||
|
}, {
|
||||||
|
Wrap(Wrap(io.EOF, "error1"), "error2"),
|
||||||
|
"%+v",
|
||||||
|
"EOF\n" +
|
||||||
|
"error1\n" +
|
||||||
|
"github.com/pkg/errors.TestFormatWrap\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/format_test.go:103\n",
|
||||||
|
}, {
|
||||||
|
Wrap(New("error with space"), "context"),
|
||||||
|
"%q",
|
||||||
|
`"context: error with space"`,
|
||||||
|
}}
|
||||||
|
|
||||||
|
for i, tt := range tests {
|
||||||
|
testFormatRegexp(t, i, tt.error, tt.format, tt.want)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func TestFormatWrapf(t *testing.T) {
|
||||||
|
tests := []struct {
|
||||||
|
error
|
||||||
|
format string
|
||||||
|
want string
|
||||||
|
}{{
|
||||||
|
Wrapf(io.EOF, "error%d", 2),
|
||||||
|
"%s",
|
||||||
|
"error2: EOF",
|
||||||
|
}, {
|
||||||
|
Wrapf(io.EOF, "error%d", 2),
|
||||||
|
"%v",
|
||||||
|
"error2: EOF",
|
||||||
|
}, {
|
||||||
|
Wrapf(io.EOF, "error%d", 2),
|
||||||
|
"%+v",
|
||||||
|
"EOF\n" +
|
||||||
|
"error2\n" +
|
||||||
|
"github.com/pkg/errors.TestFormatWrapf\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/format_test.go:134",
|
||||||
|
}, {
|
||||||
|
Wrapf(New("error"), "error%d", 2),
|
||||||
|
"%s",
|
||||||
|
"error2: error",
|
||||||
|
}, {
|
||||||
|
Wrapf(New("error"), "error%d", 2),
|
||||||
|
"%v",
|
||||||
|
"error2: error",
|
||||||
|
}, {
|
||||||
|
Wrapf(New("error"), "error%d", 2),
|
||||||
|
"%+v",
|
||||||
|
"error\n" +
|
||||||
|
"github.com/pkg/errors.TestFormatWrapf\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/format_test.go:149",
|
||||||
|
}}
|
||||||
|
|
||||||
|
for i, tt := range tests {
|
||||||
|
testFormatRegexp(t, i, tt.error, tt.format, tt.want)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func TestFormatWithStack(t *testing.T) {
|
||||||
|
tests := []struct {
|
||||||
|
error
|
||||||
|
format string
|
||||||
|
want []string
|
||||||
|
}{{
|
||||||
|
WithStack(io.EOF),
|
||||||
|
"%s",
|
||||||
|
[]string{"EOF"},
|
||||||
|
}, {
|
||||||
|
WithStack(io.EOF),
|
||||||
|
"%v",
|
||||||
|
[]string{"EOF"},
|
||||||
|
}, {
|
||||||
|
WithStack(io.EOF),
|
||||||
|
"%+v",
|
||||||
|
[]string{"EOF",
|
||||||
|
"github.com/pkg/errors.TestFormatWithStack\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/format_test.go:175"},
|
||||||
|
}, {
|
||||||
|
WithStack(New("error")),
|
||||||
|
"%s",
|
||||||
|
[]string{"error"},
|
||||||
|
}, {
|
||||||
|
WithStack(New("error")),
|
||||||
|
"%v",
|
||||||
|
[]string{"error"},
|
||||||
|
}, {
|
||||||
|
WithStack(New("error")),
|
||||||
|
"%+v",
|
||||||
|
[]string{"error",
|
||||||
|
"github.com/pkg/errors.TestFormatWithStack\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/format_test.go:189",
|
||||||
|
"github.com/pkg/errors.TestFormatWithStack\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/format_test.go:189"},
|
||||||
|
}, {
|
||||||
|
WithStack(WithStack(io.EOF)),
|
||||||
|
"%+v",
|
||||||
|
[]string{"EOF",
|
||||||
|
"github.com/pkg/errors.TestFormatWithStack\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/format_test.go:197",
|
||||||
|
"github.com/pkg/errors.TestFormatWithStack\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/format_test.go:197"},
|
||||||
|
}, {
|
||||||
|
WithStack(WithStack(Wrapf(io.EOF, "message"))),
|
||||||
|
"%+v",
|
||||||
|
[]string{"EOF",
|
||||||
|
"message",
|
||||||
|
"github.com/pkg/errors.TestFormatWithStack\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/format_test.go:205",
|
||||||
|
"github.com/pkg/errors.TestFormatWithStack\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/format_test.go:205",
|
||||||
|
"github.com/pkg/errors.TestFormatWithStack\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/format_test.go:205"},
|
||||||
|
}, {
|
||||||
|
WithStack(Errorf("error%d", 1)),
|
||||||
|
"%+v",
|
||||||
|
[]string{"error1",
|
||||||
|
"github.com/pkg/errors.TestFormatWithStack\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/format_test.go:216",
|
||||||
|
"github.com/pkg/errors.TestFormatWithStack\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/format_test.go:216"},
|
||||||
|
}}
|
||||||
|
|
||||||
|
for i, tt := range tests {
|
||||||
|
testFormatCompleteCompare(t, i, tt.error, tt.format, tt.want, true)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func TestFormatWithMessage(t *testing.T) {
|
||||||
|
tests := []struct {
|
||||||
|
error
|
||||||
|
format string
|
||||||
|
want []string
|
||||||
|
}{{
|
||||||
|
WithMessage(New("error"), "error2"),
|
||||||
|
"%s",
|
||||||
|
[]string{"error2: error"},
|
||||||
|
}, {
|
||||||
|
WithMessage(New("error"), "error2"),
|
||||||
|
"%v",
|
||||||
|
[]string{"error2: error"},
|
||||||
|
}, {
|
||||||
|
WithMessage(New("error"), "error2"),
|
||||||
|
"%+v",
|
||||||
|
[]string{
|
||||||
|
"error",
|
||||||
|
"github.com/pkg/errors.TestFormatWithMessage\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/format_test.go:244",
|
||||||
|
"error2"},
|
||||||
|
}, {
|
||||||
|
WithMessage(io.EOF, "addition1"),
|
||||||
|
"%s",
|
||||||
|
[]string{"addition1: EOF"},
|
||||||
|
}, {
|
||||||
|
WithMessage(io.EOF, "addition1"),
|
||||||
|
"%v",
|
||||||
|
[]string{"addition1: EOF"},
|
||||||
|
}, {
|
||||||
|
WithMessage(io.EOF, "addition1"),
|
||||||
|
"%+v",
|
||||||
|
[]string{"EOF", "addition1"},
|
||||||
|
}, {
|
||||||
|
WithMessage(WithMessage(io.EOF, "addition1"), "addition2"),
|
||||||
|
"%v",
|
||||||
|
[]string{"addition2: addition1: EOF"},
|
||||||
|
}, {
|
||||||
|
WithMessage(WithMessage(io.EOF, "addition1"), "addition2"),
|
||||||
|
"%+v",
|
||||||
|
[]string{"EOF", "addition1", "addition2"},
|
||||||
|
}, {
|
||||||
|
Wrap(WithMessage(io.EOF, "error1"), "error2"),
|
||||||
|
"%+v",
|
||||||
|
[]string{"EOF", "error1", "error2",
|
||||||
|
"github.com/pkg/errors.TestFormatWithMessage\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/format_test.go:272"},
|
||||||
|
}, {
|
||||||
|
WithMessage(Errorf("error%d", 1), "error2"),
|
||||||
|
"%+v",
|
||||||
|
[]string{"error1",
|
||||||
|
"github.com/pkg/errors.TestFormatWithMessage\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/format_test.go:278",
|
||||||
|
"error2"},
|
||||||
|
}, {
|
||||||
|
WithMessage(WithStack(io.EOF), "error"),
|
||||||
|
"%+v",
|
||||||
|
[]string{
|
||||||
|
"EOF",
|
||||||
|
"github.com/pkg/errors.TestFormatWithMessage\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/format_test.go:285",
|
||||||
|
"error"},
|
||||||
|
}, {
|
||||||
|
WithMessage(Wrap(WithStack(io.EOF), "inside-error"), "outside-error"),
|
||||||
|
"%+v",
|
||||||
|
[]string{
|
||||||
|
"EOF",
|
||||||
|
"github.com/pkg/errors.TestFormatWithMessage\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/format_test.go:293",
|
||||||
|
"inside-error",
|
||||||
|
"github.com/pkg/errors.TestFormatWithMessage\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/format_test.go:293",
|
||||||
|
"outside-error"},
|
||||||
|
}}
|
||||||
|
|
||||||
|
for i, tt := range tests {
|
||||||
|
testFormatCompleteCompare(t, i, tt.error, tt.format, tt.want, true)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func TestFormatGeneric(t *testing.T) {
|
||||||
|
starts := []struct {
|
||||||
|
err error
|
||||||
|
want []string
|
||||||
|
}{
|
||||||
|
{New("new-error"), []string{
|
||||||
|
"new-error",
|
||||||
|
"github.com/pkg/errors.TestFormatGeneric\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/format_test.go:315"},
|
||||||
|
}, {Errorf("errorf-error"), []string{
|
||||||
|
"errorf-error",
|
||||||
|
"github.com/pkg/errors.TestFormatGeneric\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/format_test.go:319"},
|
||||||
|
}, {errors.New("errors-new-error"), []string{
|
||||||
|
"errors-new-error"},
|
||||||
|
},
|
||||||
|
}
|
||||||
|
|
||||||
|
wrappers := []wrapper{
|
||||||
|
{
|
||||||
|
func(err error) error { return WithMessage(err, "with-message") },
|
||||||
|
[]string{"with-message"},
|
||||||
|
}, {
|
||||||
|
func(err error) error { return WithStack(err) },
|
||||||
|
[]string{
|
||||||
|
"github.com/pkg/errors.(func·002|TestFormatGeneric.func2)\n\t" +
|
||||||
|
".+/github.com/pkg/errors/format_test.go:333",
|
||||||
|
},
|
||||||
|
}, {
|
||||||
|
func(err error) error { return Wrap(err, "wrap-error") },
|
||||||
|
[]string{
|
||||||
|
"wrap-error",
|
||||||
|
"github.com/pkg/errors.(func·003|TestFormatGeneric.func3)\n\t" +
|
||||||
|
".+/github.com/pkg/errors/format_test.go:339",
|
||||||
|
},
|
||||||
|
}, {
|
||||||
|
func(err error) error { return Wrapf(err, "wrapf-error%d", 1) },
|
||||||
|
[]string{
|
||||||
|
"wrapf-error1",
|
||||||
|
"github.com/pkg/errors.(func·004|TestFormatGeneric.func4)\n\t" +
|
||||||
|
".+/github.com/pkg/errors/format_test.go:346",
|
||||||
|
},
|
||||||
|
},
|
||||||
|
}
|
||||||
|
|
||||||
|
for s := range starts {
|
||||||
|
err := starts[s].err
|
||||||
|
want := starts[s].want
|
||||||
|
testFormatCompleteCompare(t, s, err, "%+v", want, false)
|
||||||
|
testGenericRecursive(t, err, want, wrappers, 3)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func testFormatRegexp(t *testing.T, n int, arg interface{}, format, want string) {
|
||||||
|
got := fmt.Sprintf(format, arg)
|
||||||
|
gotLines := strings.SplitN(got, "\n", -1)
|
||||||
|
wantLines := strings.SplitN(want, "\n", -1)
|
||||||
|
|
||||||
|
if len(wantLines) > len(gotLines) {
|
||||||
|
t.Errorf("test %d: wantLines(%d) > gotLines(%d):\n got: %q\nwant: %q", n+1, len(wantLines), len(gotLines), got, want)
|
||||||
|
return
|
||||||
|
}
|
||||||
|
|
||||||
|
for i, w := range wantLines {
|
||||||
|
match, err := regexp.MatchString(w, gotLines[i])
|
||||||
|
if err != nil {
|
||||||
|
t.Fatal(err)
|
||||||
|
}
|
||||||
|
if !match {
|
||||||
|
t.Errorf("test %d: line %d: fmt.Sprintf(%q, err):\n got: %q\nwant: %q", n+1, i+1, format, got, want)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
var stackLineR = regexp.MustCompile(`\.`)
|
||||||
|
|
||||||
|
// parseBlocks parses input into a slice, where:
|
||||||
|
// - incase entry contains a newline, its a stacktrace
|
||||||
|
// - incase entry contains no newline, its a solo line.
|
||||||
|
//
|
||||||
|
// Detecting stack boundaries only works incase the WithStack-calls are
|
||||||
|
// to be found on the same line, thats why it is optionally here.
|
||||||
|
//
|
||||||
|
// Example use:
|
||||||
|
//
|
||||||
|
// for _, e := range blocks {
|
||||||
|
// if strings.ContainsAny(e, "\n") {
|
||||||
|
// // Match as stack
|
||||||
|
// } else {
|
||||||
|
// // Match as line
|
||||||
|
// }
|
||||||
|
// }
|
||||||
|
//
|
||||||
|
func parseBlocks(input string, detectStackboundaries bool) ([]string, error) {
|
||||||
|
var blocks []string
|
||||||
|
|
||||||
|
stack := ""
|
||||||
|
wasStack := false
|
||||||
|
lines := map[string]bool{} // already found lines
|
||||||
|
|
||||||
|
for _, l := range strings.Split(input, "\n") {
|
||||||
|
isStackLine := stackLineR.MatchString(l)
|
||||||
|
|
||||||
|
switch {
|
||||||
|
case !isStackLine && wasStack:
|
||||||
|
blocks = append(blocks, stack, l)
|
||||||
|
stack = ""
|
||||||
|
lines = map[string]bool{}
|
||||||
|
case isStackLine:
|
||||||
|
if wasStack {
|
||||||
|
// Detecting two stacks after another, possible cause lines match in
|
||||||
|
// our tests due to WithStack(WithStack(io.EOF)) on same line.
|
||||||
|
if detectStackboundaries {
|
||||||
|
if lines[l] {
|
||||||
|
if len(stack) == 0 {
|
||||||
|
return nil, errors.New("len of block must not be zero here")
|
||||||
|
}
|
||||||
|
|
||||||
|
blocks = append(blocks, stack)
|
||||||
|
stack = l
|
||||||
|
lines = map[string]bool{l: true}
|
||||||
|
continue
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
stack = stack + "\n" + l
|
||||||
|
} else {
|
||||||
|
stack = l
|
||||||
|
}
|
||||||
|
lines[l] = true
|
||||||
|
case !isStackLine && !wasStack:
|
||||||
|
blocks = append(blocks, l)
|
||||||
|
default:
|
||||||
|
return nil, errors.New("must not happen")
|
||||||
|
}
|
||||||
|
|
||||||
|
wasStack = isStackLine
|
||||||
|
}
|
||||||
|
|
||||||
|
// Use up stack
|
||||||
|
if stack != "" {
|
||||||
|
blocks = append(blocks, stack)
|
||||||
|
}
|
||||||
|
return blocks, nil
|
||||||
|
}
|
||||||
|
|
||||||
|
func testFormatCompleteCompare(t *testing.T, n int, arg interface{}, format string, want []string, detectStackBoundaries bool) {
|
||||||
|
gotStr := fmt.Sprintf(format, arg)
|
||||||
|
|
||||||
|
got, err := parseBlocks(gotStr, detectStackBoundaries)
|
||||||
|
if err != nil {
|
||||||
|
t.Fatal(err)
|
||||||
|
}
|
||||||
|
|
||||||
|
if len(got) != len(want) {
|
||||||
|
t.Fatalf("test %d: fmt.Sprintf(%s, err) -> wrong number of blocks: got(%d) want(%d)\n got: %s\nwant: %s\ngotStr: %q",
|
||||||
|
n+1, format, len(got), len(want), prettyBlocks(got), prettyBlocks(want), gotStr)
|
||||||
|
}
|
||||||
|
|
||||||
|
for i := range got {
|
||||||
|
if strings.ContainsAny(want[i], "\n") {
|
||||||
|
// Match as stack
|
||||||
|
match, err := regexp.MatchString(want[i], got[i])
|
||||||
|
if err != nil {
|
||||||
|
t.Fatal(err)
|
||||||
|
}
|
||||||
|
if !match {
|
||||||
|
t.Fatalf("test %d: block %d: fmt.Sprintf(%q, err):\ngot:\n%q\nwant:\n%q\nall-got:\n%s\nall-want:\n%s\n",
|
||||||
|
n+1, i+1, format, got[i], want[i], prettyBlocks(got), prettyBlocks(want))
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
// Match as message
|
||||||
|
if got[i] != want[i] {
|
||||||
|
t.Fatalf("test %d: fmt.Sprintf(%s, err) at block %d got != want:\n got: %q\nwant: %q", n+1, format, i+1, got[i], want[i])
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
type wrapper struct {
|
||||||
|
wrap func(err error) error
|
||||||
|
want []string
|
||||||
|
}
|
||||||
|
|
||||||
|
func prettyBlocks(blocks []string, prefix ...string) string {
|
||||||
|
var out []string
|
||||||
|
|
||||||
|
for _, b := range blocks {
|
||||||
|
out = append(out, fmt.Sprintf("%v", b))
|
||||||
|
}
|
||||||
|
|
||||||
|
return " " + strings.Join(out, "\n ")
|
||||||
|
}
|
||||||
|
|
||||||
|
func testGenericRecursive(t *testing.T, beforeErr error, beforeWant []string, list []wrapper, maxDepth int) {
|
||||||
|
if len(beforeWant) == 0 {
|
||||||
|
panic("beforeWant must not be empty")
|
||||||
|
}
|
||||||
|
for _, w := range list {
|
||||||
|
if len(w.want) == 0 {
|
||||||
|
panic("want must not be empty")
|
||||||
|
}
|
||||||
|
|
||||||
|
err := w.wrap(beforeErr)
|
||||||
|
|
||||||
|
// Copy required cause append(beforeWant, ..) modified beforeWant subtly.
|
||||||
|
beforeCopy := make([]string, len(beforeWant))
|
||||||
|
copy(beforeCopy, beforeWant)
|
||||||
|
|
||||||
|
beforeWant := beforeCopy
|
||||||
|
last := len(beforeWant) - 1
|
||||||
|
var want []string
|
||||||
|
|
||||||
|
// Merge two stacks behind each other.
|
||||||
|
if strings.ContainsAny(beforeWant[last], "\n") && strings.ContainsAny(w.want[0], "\n") {
|
||||||
|
want = append(beforeWant[:last], append([]string{beforeWant[last] + "((?s).*)" + w.want[0]}, w.want[1:]...)...)
|
||||||
|
} else {
|
||||||
|
want = append(beforeWant, w.want...)
|
||||||
|
}
|
||||||
|
|
||||||
|
testFormatCompleteCompare(t, maxDepth, err, "%+v", want, false)
|
||||||
|
if maxDepth > 0 {
|
||||||
|
testGenericRecursive(t, err, want, list, maxDepth-1)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
178
vendor/github.com/pkg/errors/stack.go
generated
vendored
Normal file
178
vendor/github.com/pkg/errors/stack.go
generated
vendored
Normal file
@ -0,0 +1,178 @@
|
|||||||
|
package errors
|
||||||
|
|
||||||
|
import (
|
||||||
|
"fmt"
|
||||||
|
"io"
|
||||||
|
"path"
|
||||||
|
"runtime"
|
||||||
|
"strings"
|
||||||
|
)
|
||||||
|
|
||||||
|
// Frame represents a program counter inside a stack frame.
|
||||||
|
type Frame uintptr
|
||||||
|
|
||||||
|
// pc returns the program counter for this frame;
|
||||||
|
// multiple frames may have the same PC value.
|
||||||
|
func (f Frame) pc() uintptr { return uintptr(f) - 1 }
|
||||||
|
|
||||||
|
// file returns the full path to the file that contains the
|
||||||
|
// function for this Frame's pc.
|
||||||
|
func (f Frame) file() string {
|
||||||
|
fn := runtime.FuncForPC(f.pc())
|
||||||
|
if fn == nil {
|
||||||
|
return "unknown"
|
||||||
|
}
|
||||||
|
file, _ := fn.FileLine(f.pc())
|
||||||
|
return file
|
||||||
|
}
|
||||||
|
|
||||||
|
// line returns the line number of source code of the
|
||||||
|
// function for this Frame's pc.
|
||||||
|
func (f Frame) line() int {
|
||||||
|
fn := runtime.FuncForPC(f.pc())
|
||||||
|
if fn == nil {
|
||||||
|
return 0
|
||||||
|
}
|
||||||
|
_, line := fn.FileLine(f.pc())
|
||||||
|
return line
|
||||||
|
}
|
||||||
|
|
||||||
|
// Format formats the frame according to the fmt.Formatter interface.
|
||||||
|
//
|
||||||
|
// %s source file
|
||||||
|
// %d source line
|
||||||
|
// %n function name
|
||||||
|
// %v equivalent to %s:%d
|
||||||
|
//
|
||||||
|
// Format accepts flags that alter the printing of some verbs, as follows:
|
||||||
|
//
|
||||||
|
// %+s path of source file relative to the compile time GOPATH
|
||||||
|
// %+v equivalent to %+s:%d
|
||||||
|
func (f Frame) Format(s fmt.State, verb rune) {
|
||||||
|
switch verb {
|
||||||
|
case 's':
|
||||||
|
switch {
|
||||||
|
case s.Flag('+'):
|
||||||
|
pc := f.pc()
|
||||||
|
fn := runtime.FuncForPC(pc)
|
||||||
|
if fn == nil {
|
||||||
|
io.WriteString(s, "unknown")
|
||||||
|
} else {
|
||||||
|
file, _ := fn.FileLine(pc)
|
||||||
|
fmt.Fprintf(s, "%s\n\t%s", fn.Name(), file)
|
||||||
|
}
|
||||||
|
default:
|
||||||
|
io.WriteString(s, path.Base(f.file()))
|
||||||
|
}
|
||||||
|
case 'd':
|
||||||
|
fmt.Fprintf(s, "%d", f.line())
|
||||||
|
case 'n':
|
||||||
|
name := runtime.FuncForPC(f.pc()).Name()
|
||||||
|
io.WriteString(s, funcname(name))
|
||||||
|
case 'v':
|
||||||
|
f.Format(s, 's')
|
||||||
|
io.WriteString(s, ":")
|
||||||
|
f.Format(s, 'd')
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// StackTrace is stack of Frames from innermost (newest) to outermost (oldest).
|
||||||
|
type StackTrace []Frame
|
||||||
|
|
||||||
|
func (st StackTrace) Format(s fmt.State, verb rune) {
|
||||||
|
switch verb {
|
||||||
|
case 'v':
|
||||||
|
switch {
|
||||||
|
case s.Flag('+'):
|
||||||
|
for _, f := range st {
|
||||||
|
fmt.Fprintf(s, "\n%+v", f)
|
||||||
|
}
|
||||||
|
case s.Flag('#'):
|
||||||
|
fmt.Fprintf(s, "%#v", []Frame(st))
|
||||||
|
default:
|
||||||
|
fmt.Fprintf(s, "%v", []Frame(st))
|
||||||
|
}
|
||||||
|
case 's':
|
||||||
|
fmt.Fprintf(s, "%s", []Frame(st))
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// stack represents a stack of program counters.
|
||||||
|
type stack []uintptr
|
||||||
|
|
||||||
|
func (s *stack) Format(st fmt.State, verb rune) {
|
||||||
|
switch verb {
|
||||||
|
case 'v':
|
||||||
|
switch {
|
||||||
|
case st.Flag('+'):
|
||||||
|
for _, pc := range *s {
|
||||||
|
f := Frame(pc)
|
||||||
|
fmt.Fprintf(st, "\n%+v", f)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func (s *stack) StackTrace() StackTrace {
|
||||||
|
f := make([]Frame, len(*s))
|
||||||
|
for i := 0; i < len(f); i++ {
|
||||||
|
f[i] = Frame((*s)[i])
|
||||||
|
}
|
||||||
|
return f
|
||||||
|
}
|
||||||
|
|
||||||
|
func callers() *stack {
|
||||||
|
const depth = 32
|
||||||
|
var pcs [depth]uintptr
|
||||||
|
n := runtime.Callers(3, pcs[:])
|
||||||
|
var st stack = pcs[0:n]
|
||||||
|
return &st
|
||||||
|
}
|
||||||
|
|
||||||
|
// funcname removes the path prefix component of a function's name reported by func.Name().
|
||||||
|
func funcname(name string) string {
|
||||||
|
i := strings.LastIndex(name, "/")
|
||||||
|
name = name[i+1:]
|
||||||
|
i = strings.Index(name, ".")
|
||||||
|
return name[i+1:]
|
||||||
|
}
|
||||||
|
|
||||||
|
func trimGOPATH(name, file string) string {
|
||||||
|
// Here we want to get the source file path relative to the compile time
|
||||||
|
// GOPATH. As of Go 1.6.x there is no direct way to know the compiled
|
||||||
|
// GOPATH at runtime, but we can infer the number of path segments in the
|
||||||
|
// GOPATH. We note that fn.Name() returns the function name qualified by
|
||||||
|
// the import path, which does not include the GOPATH. Thus we can trim
|
||||||
|
// segments from the beginning of the file path until the number of path
|
||||||
|
// separators remaining is one more than the number of path separators in
|
||||||
|
// the function name. For example, given:
|
||||||
|
//
|
||||||
|
// GOPATH /home/user
|
||||||
|
// file /home/user/src/pkg/sub/file.go
|
||||||
|
// fn.Name() pkg/sub.Type.Method
|
||||||
|
//
|
||||||
|
// We want to produce:
|
||||||
|
//
|
||||||
|
// pkg/sub/file.go
|
||||||
|
//
|
||||||
|
// From this we can easily see that fn.Name() has one less path separator
|
||||||
|
// than our desired output. We count separators from the end of the file
|
||||||
|
// path until it finds two more than in the function name and then move
|
||||||
|
// one character forward to preserve the initial path segment without a
|
||||||
|
// leading separator.
|
||||||
|
const sep = "/"
|
||||||
|
goal := strings.Count(name, sep) + 2
|
||||||
|
i := len(file)
|
||||||
|
for n := 0; n < goal; n++ {
|
||||||
|
i = strings.LastIndex(file[:i], sep)
|
||||||
|
if i == -1 {
|
||||||
|
// not enough separators found, set i so that the slice expression
|
||||||
|
// below leaves file unmodified
|
||||||
|
i = -len(sep)
|
||||||
|
break
|
||||||
|
}
|
||||||
|
}
|
||||||
|
// get back to 0 or trim the leading separator
|
||||||
|
file = file[i+len(sep):]
|
||||||
|
return file
|
||||||
|
}
|
||||||
292
vendor/github.com/pkg/errors/stack_test.go
generated
vendored
Normal file
292
vendor/github.com/pkg/errors/stack_test.go
generated
vendored
Normal file
@ -0,0 +1,292 @@
|
|||||||
|
package errors
|
||||||
|
|
||||||
|
import (
|
||||||
|
"fmt"
|
||||||
|
"runtime"
|
||||||
|
"testing"
|
||||||
|
)
|
||||||
|
|
||||||
|
var initpc, _, _, _ = runtime.Caller(0)
|
||||||
|
|
||||||
|
func TestFrameLine(t *testing.T) {
|
||||||
|
var tests = []struct {
|
||||||
|
Frame
|
||||||
|
want int
|
||||||
|
}{{
|
||||||
|
Frame(initpc),
|
||||||
|
9,
|
||||||
|
}, {
|
||||||
|
func() Frame {
|
||||||
|
var pc, _, _, _ = runtime.Caller(0)
|
||||||
|
return Frame(pc)
|
||||||
|
}(),
|
||||||
|
20,
|
||||||
|
}, {
|
||||||
|
func() Frame {
|
||||||
|
var pc, _, _, _ = runtime.Caller(1)
|
||||||
|
return Frame(pc)
|
||||||
|
}(),
|
||||||
|
28,
|
||||||
|
}, {
|
||||||
|
Frame(0), // invalid PC
|
||||||
|
0,
|
||||||
|
}}
|
||||||
|
|
||||||
|
for _, tt := range tests {
|
||||||
|
got := tt.Frame.line()
|
||||||
|
want := tt.want
|
||||||
|
if want != got {
|
||||||
|
t.Errorf("Frame(%v): want: %v, got: %v", uintptr(tt.Frame), want, got)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
type X struct{}
|
||||||
|
|
||||||
|
func (x X) val() Frame {
|
||||||
|
var pc, _, _, _ = runtime.Caller(0)
|
||||||
|
return Frame(pc)
|
||||||
|
}
|
||||||
|
|
||||||
|
func (x *X) ptr() Frame {
|
||||||
|
var pc, _, _, _ = runtime.Caller(0)
|
||||||
|
return Frame(pc)
|
||||||
|
}
|
||||||
|
|
||||||
|
func TestFrameFormat(t *testing.T) {
|
||||||
|
var tests = []struct {
|
||||||
|
Frame
|
||||||
|
format string
|
||||||
|
want string
|
||||||
|
}{{
|
||||||
|
Frame(initpc),
|
||||||
|
"%s",
|
||||||
|
"stack_test.go",
|
||||||
|
}, {
|
||||||
|
Frame(initpc),
|
||||||
|
"%+s",
|
||||||
|
"github.com/pkg/errors.init\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/stack_test.go",
|
||||||
|
}, {
|
||||||
|
Frame(0),
|
||||||
|
"%s",
|
||||||
|
"unknown",
|
||||||
|
}, {
|
||||||
|
Frame(0),
|
||||||
|
"%+s",
|
||||||
|
"unknown",
|
||||||
|
}, {
|
||||||
|
Frame(initpc),
|
||||||
|
"%d",
|
||||||
|
"9",
|
||||||
|
}, {
|
||||||
|
Frame(0),
|
||||||
|
"%d",
|
||||||
|
"0",
|
||||||
|
}, {
|
||||||
|
Frame(initpc),
|
||||||
|
"%n",
|
||||||
|
"init",
|
||||||
|
}, {
|
||||||
|
func() Frame {
|
||||||
|
var x X
|
||||||
|
return x.ptr()
|
||||||
|
}(),
|
||||||
|
"%n",
|
||||||
|
`\(\*X\).ptr`,
|
||||||
|
}, {
|
||||||
|
func() Frame {
|
||||||
|
var x X
|
||||||
|
return x.val()
|
||||||
|
}(),
|
||||||
|
"%n",
|
||||||
|
"X.val",
|
||||||
|
}, {
|
||||||
|
Frame(0),
|
||||||
|
"%n",
|
||||||
|
"",
|
||||||
|
}, {
|
||||||
|
Frame(initpc),
|
||||||
|
"%v",
|
||||||
|
"stack_test.go:9",
|
||||||
|
}, {
|
||||||
|
Frame(initpc),
|
||||||
|
"%+v",
|
||||||
|
"github.com/pkg/errors.init\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/stack_test.go:9",
|
||||||
|
}, {
|
||||||
|
Frame(0),
|
||||||
|
"%v",
|
||||||
|
"unknown:0",
|
||||||
|
}}
|
||||||
|
|
||||||
|
for i, tt := range tests {
|
||||||
|
testFormatRegexp(t, i, tt.Frame, tt.format, tt.want)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func TestFuncname(t *testing.T) {
|
||||||
|
tests := []struct {
|
||||||
|
name, want string
|
||||||
|
}{
|
||||||
|
{"", ""},
|
||||||
|
{"runtime.main", "main"},
|
||||||
|
{"github.com/pkg/errors.funcname", "funcname"},
|
||||||
|
{"funcname", "funcname"},
|
||||||
|
{"io.copyBuffer", "copyBuffer"},
|
||||||
|
{"main.(*R).Write", "(*R).Write"},
|
||||||
|
}
|
||||||
|
|
||||||
|
for _, tt := range tests {
|
||||||
|
got := funcname(tt.name)
|
||||||
|
want := tt.want
|
||||||
|
if got != want {
|
||||||
|
t.Errorf("funcname(%q): want: %q, got %q", tt.name, want, got)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func TestTrimGOPATH(t *testing.T) {
|
||||||
|
var tests = []struct {
|
||||||
|
Frame
|
||||||
|
want string
|
||||||
|
}{{
|
||||||
|
Frame(initpc),
|
||||||
|
"github.com/pkg/errors/stack_test.go",
|
||||||
|
}}
|
||||||
|
|
||||||
|
for i, tt := range tests {
|
||||||
|
pc := tt.Frame.pc()
|
||||||
|
fn := runtime.FuncForPC(pc)
|
||||||
|
file, _ := fn.FileLine(pc)
|
||||||
|
got := trimGOPATH(fn.Name(), file)
|
||||||
|
testFormatRegexp(t, i, got, "%s", tt.want)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func TestStackTrace(t *testing.T) {
|
||||||
|
tests := []struct {
|
||||||
|
err error
|
||||||
|
want []string
|
||||||
|
}{{
|
||||||
|
New("ooh"), []string{
|
||||||
|
"github.com/pkg/errors.TestStackTrace\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/stack_test.go:172",
|
||||||
|
},
|
||||||
|
}, {
|
||||||
|
Wrap(New("ooh"), "ahh"), []string{
|
||||||
|
"github.com/pkg/errors.TestStackTrace\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/stack_test.go:177", // this is the stack of Wrap, not New
|
||||||
|
},
|
||||||
|
}, {
|
||||||
|
Cause(Wrap(New("ooh"), "ahh")), []string{
|
||||||
|
"github.com/pkg/errors.TestStackTrace\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/stack_test.go:182", // this is the stack of New
|
||||||
|
},
|
||||||
|
}, {
|
||||||
|
func() error { return New("ooh") }(), []string{
|
||||||
|
`github.com/pkg/errors.(func·009|TestStackTrace.func1)` +
|
||||||
|
"\n\t.+/github.com/pkg/errors/stack_test.go:187", // this is the stack of New
|
||||||
|
"github.com/pkg/errors.TestStackTrace\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/stack_test.go:187", // this is the stack of New's caller
|
||||||
|
},
|
||||||
|
}, {
|
||||||
|
Cause(func() error {
|
||||||
|
return func() error {
|
||||||
|
return Errorf("hello %s", fmt.Sprintf("world"))
|
||||||
|
}()
|
||||||
|
}()), []string{
|
||||||
|
`github.com/pkg/errors.(func·010|TestStackTrace.func2.1)` +
|
||||||
|
"\n\t.+/github.com/pkg/errors/stack_test.go:196", // this is the stack of Errorf
|
||||||
|
`github.com/pkg/errors.(func·011|TestStackTrace.func2)` +
|
||||||
|
"\n\t.+/github.com/pkg/errors/stack_test.go:197", // this is the stack of Errorf's caller
|
||||||
|
"github.com/pkg/errors.TestStackTrace\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/stack_test.go:198", // this is the stack of Errorf's caller's caller
|
||||||
|
},
|
||||||
|
}}
|
||||||
|
for i, tt := range tests {
|
||||||
|
x, ok := tt.err.(interface {
|
||||||
|
StackTrace() StackTrace
|
||||||
|
})
|
||||||
|
if !ok {
|
||||||
|
t.Errorf("expected %#v to implement StackTrace() StackTrace", tt.err)
|
||||||
|
continue
|
||||||
|
}
|
||||||
|
st := x.StackTrace()
|
||||||
|
for j, want := range tt.want {
|
||||||
|
testFormatRegexp(t, i, st[j], "%+v", want)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func stackTrace() StackTrace {
|
||||||
|
const depth = 8
|
||||||
|
var pcs [depth]uintptr
|
||||||
|
n := runtime.Callers(1, pcs[:])
|
||||||
|
var st stack = pcs[0:n]
|
||||||
|
return st.StackTrace()
|
||||||
|
}
|
||||||
|
|
||||||
|
func TestStackTraceFormat(t *testing.T) {
|
||||||
|
tests := []struct {
|
||||||
|
StackTrace
|
||||||
|
format string
|
||||||
|
want string
|
||||||
|
}{{
|
||||||
|
nil,
|
||||||
|
"%s",
|
||||||
|
`\[\]`,
|
||||||
|
}, {
|
||||||
|
nil,
|
||||||
|
"%v",
|
||||||
|
`\[\]`,
|
||||||
|
}, {
|
||||||
|
nil,
|
||||||
|
"%+v",
|
||||||
|
"",
|
||||||
|
}, {
|
||||||
|
nil,
|
||||||
|
"%#v",
|
||||||
|
`\[\]errors.Frame\(nil\)`,
|
||||||
|
}, {
|
||||||
|
make(StackTrace, 0),
|
||||||
|
"%s",
|
||||||
|
`\[\]`,
|
||||||
|
}, {
|
||||||
|
make(StackTrace, 0),
|
||||||
|
"%v",
|
||||||
|
`\[\]`,
|
||||||
|
}, {
|
||||||
|
make(StackTrace, 0),
|
||||||
|
"%+v",
|
||||||
|
"",
|
||||||
|
}, {
|
||||||
|
make(StackTrace, 0),
|
||||||
|
"%#v",
|
||||||
|
`\[\]errors.Frame{}`,
|
||||||
|
}, {
|
||||||
|
stackTrace()[:2],
|
||||||
|
"%s",
|
||||||
|
`\[stack_test.go stack_test.go\]`,
|
||||||
|
}, {
|
||||||
|
stackTrace()[:2],
|
||||||
|
"%v",
|
||||||
|
`\[stack_test.go:225 stack_test.go:272\]`,
|
||||||
|
}, {
|
||||||
|
stackTrace()[:2],
|
||||||
|
"%+v",
|
||||||
|
"\n" +
|
||||||
|
"github.com/pkg/errors.stackTrace\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/stack_test.go:225\n" +
|
||||||
|
"github.com/pkg/errors.TestStackTraceFormat\n" +
|
||||||
|
"\t.+/github.com/pkg/errors/stack_test.go:276",
|
||||||
|
}, {
|
||||||
|
stackTrace()[:2],
|
||||||
|
"%#v",
|
||||||
|
`\[\]errors.Frame{stack_test.go:225, stack_test.go:284}`,
|
||||||
|
}}
|
||||||
|
|
||||||
|
for i, tt := range tests {
|
||||||
|
testFormatRegexp(t, i, tt.StackTrace, tt.format, tt.want)
|
||||||
|
}
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue
Block a user