mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-23 23:00:19 +00:00
296 lines
8.1 KiB
Go
296 lines
8.1 KiB
Go
/*
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Copyright 2019 The Ceph-CSI Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package util
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import (
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"bytes"
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"context"
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"errors"
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"fmt"
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"os"
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"os/exec"
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"time"
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"github.com/ceph/ceph-csi/internal/util/log"
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"github.com/ceph/go-ceph/rados"
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)
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// InvalidPoolID used to denote an invalid pool.
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const InvalidPoolID int64 = -1
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// ExecuteCommandWithNSEnter executes passed in program with args with nsenter
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// and returns separate stdout and stderr streams. In case ctx is not set to
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// context.TODO(), the command will be logged after it was executed.
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func ExecuteCommandWithNSEnter(ctx context.Context, netPath, program string, args ...string) (string, string, error) {
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var (
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stdoutBuf bytes.Buffer
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stderrBuf bytes.Buffer
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nsenter = "nsenter"
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)
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// check netPath exists
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if _, err := os.Stat(netPath); err != nil {
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return "", "", fmt.Errorf("failed to get stat for %s %w", netPath, err)
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}
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// nsenter --net=%s -- <program> <args>
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args = append([]string{"--net=" + netPath, "--", program}, args...)
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sanitizedArgs := StripSecretInArgs(args)
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cmd := exec.Command(nsenter, args...) // #nosec:G204, commands executing not vulnerable.
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cmd.Stdout = &stdoutBuf
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cmd.Stderr = &stderrBuf
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err := cmd.Run()
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stdout := stdoutBuf.String()
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stderr := stderrBuf.String()
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if err != nil {
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err = fmt.Errorf("an error (%w) occurred while running %s args: %v", err, nsenter, sanitizedArgs)
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if ctx != context.TODO() {
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log.UsefulLog(ctx, "%s", err)
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}
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return stdout, stderr, err
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}
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if ctx != context.TODO() {
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log.UsefulLog(ctx, "command succeeded: %s %v", nsenter, sanitizedArgs)
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}
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return stdout, stderr, nil
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}
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// ExecCommand executes passed in program with args and returns separate stdout
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// and stderr streams. In case ctx is not set to context.TODO(), the command
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// will be logged after it was executed.
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func ExecCommand(ctx context.Context, program string, args ...string) (string, string, error) {
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var (
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cmd = exec.Command(program, args...) // #nosec:G204, commands executing not vulnerable.
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sanitizedArgs = StripSecretInArgs(args)
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stdoutBuf bytes.Buffer
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stderrBuf bytes.Buffer
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)
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cmd.Stdout = &stdoutBuf
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cmd.Stderr = &stderrBuf
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err := cmd.Run()
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stdout := stdoutBuf.String()
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stderr := stderrBuf.String()
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if err != nil {
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err = fmt.Errorf("an error (%w) occurred while running %s args: %v", err, program, sanitizedArgs)
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if ctx != context.TODO() {
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log.UsefulLog(ctx, "%s", err)
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}
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return stdout, stderr, err
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}
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if ctx != context.TODO() {
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log.UsefulLog(ctx, "command succeeded: %s %v", program, sanitizedArgs)
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}
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return stdout, stderr, nil
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}
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// ExecCommandWithTimeout executes passed in program with args, timeout and
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// returns separate stdout and stderr streams. If the command is not executed
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// within given timeout, the process will be killed. In case ctx is not set to
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// context.TODO(), the command will be logged after it was executed.
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func ExecCommandWithTimeout(
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ctx context.Context,
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timeout time.Duration,
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program string,
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args ...string) (
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string,
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string,
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error,
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) {
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var (
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sanitizedArgs = StripSecretInArgs(args)
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stdoutBuf bytes.Buffer
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stderrBuf bytes.Buffer
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)
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cctx, cancel := context.WithTimeout(context.Background(), timeout)
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defer cancel()
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cmd := exec.CommandContext(cctx, program, args...) // #nosec:G204, commands executing not vulnerable.
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cmd.Stdout = &stdoutBuf
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cmd.Stderr = &stderrBuf
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err := cmd.Run()
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stdout := stdoutBuf.String()
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stderr := stderrBuf.String()
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if err != nil {
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// if its a timeout log return context deadline exceeded error message
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if errors.Is(cctx.Err(), context.DeadlineExceeded) {
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err = fmt.Errorf("timeout: %w", cctx.Err())
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}
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err = fmt.Errorf("an error (%w) and stderror (%s) occurred while running %s args: %v",
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err,
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stderr,
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program,
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sanitizedArgs)
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if ctx != context.TODO() {
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log.ErrorLog(ctx, "%s", err)
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}
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return stdout, stderr, err
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}
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if ctx != context.TODO() {
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log.UsefulLog(ctx, "command succeeded: %s %v", program, sanitizedArgs)
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}
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return stdout, stderr, nil
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}
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// GetPoolID fetches the ID of the pool that matches the passed in poolName
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// parameter.
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func GetPoolID(monitors string, cr *Credentials, poolName string) (int64, error) {
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conn, err := connPool.Get(monitors, cr.ID, cr.KeyFile)
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if err != nil {
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return InvalidPoolID, err
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}
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defer connPool.Put(conn)
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id, err := conn.GetPoolByName(poolName)
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if errors.Is(err, rados.ErrNotFound) {
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return InvalidPoolID, fmt.Errorf("%w: pool (%s) not found in Ceph cluster",
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ErrPoolNotFound, poolName)
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} else if err != nil {
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return InvalidPoolID, err
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}
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return id, nil
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}
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// GetPoolName fetches the pool whose pool ID is equal to the requested poolID
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// parameter.
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func GetPoolName(monitors string, cr *Credentials, poolID int64) (string, error) {
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conn, err := connPool.Get(monitors, cr.ID, cr.KeyFile)
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if err != nil {
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return "", err
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}
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defer connPool.Put(conn)
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name, err := conn.GetPoolByID(poolID)
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if errors.Is(err, rados.ErrNotFound) {
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return "", fmt.Errorf("%w: pool ID(%d) not found in Ceph cluster",
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ErrPoolNotFound, poolID)
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} else if err != nil {
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return "", fmt.Errorf("failed to get pool ID %d: %w", poolID, err)
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}
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return name, nil
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}
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// GetPoolIDs searches a list of pools in a cluster and returns the IDs of the pools that matches
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// the passed in pools
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// TODO this should take in a list and return a map[string(poolname)]int64(poolID).
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func GetPoolIDs(ctx context.Context, monitors, journalPool, imagePool string, cr *Credentials) (int64, int64, error) {
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journalPoolID, err := GetPoolID(monitors, cr, journalPool)
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if err != nil {
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return InvalidPoolID, InvalidPoolID, err
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}
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imagePoolID := journalPoolID
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if imagePool != journalPool {
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imagePoolID, err = GetPoolID(monitors, cr, imagePool)
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if err != nil {
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return InvalidPoolID, InvalidPoolID, err
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}
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}
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return journalPoolID, imagePoolID, nil
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}
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// CreateObject creates the object name passed in and returns ErrObjectExists if the provided object
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// is already present in rados.
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func CreateObject(ctx context.Context, monitors string, cr *Credentials, poolName, namespace, objectName string) error {
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conn := ClusterConnection{}
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err := conn.Connect(monitors, cr)
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if err != nil {
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return err
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}
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defer conn.Destroy()
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ioctx, err := conn.GetIoctx(poolName)
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if err != nil {
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if errors.Is(err, ErrPoolNotFound) {
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err = fmt.Errorf("Failed as %w (internal %w)", ErrObjectNotFound, err)
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}
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return err
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}
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defer ioctx.Destroy()
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if namespace != "" {
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ioctx.SetNamespace(namespace)
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}
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err = ioctx.Create(objectName, rados.CreateExclusive)
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if errors.Is(err, rados.ErrObjectExists) {
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return fmt.Errorf("Failed as %w (internal %w)", ErrObjectExists, err)
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} else if err != nil {
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log.ErrorLog(ctx, "failed creating omap (%s) in pool (%s): (%v)", objectName, poolName, err)
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return err
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}
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return nil
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}
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// RemoveObject removes the entire omap name passed in and returns ErrObjectNotFound is provided omap
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// is not found in rados.
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func RemoveObject(ctx context.Context, monitors string, cr *Credentials, poolName, namespace, oMapName string) error {
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conn := ClusterConnection{}
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err := conn.Connect(monitors, cr)
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if err != nil {
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return err
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}
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defer conn.Destroy()
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ioctx, err := conn.GetIoctx(poolName)
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if err != nil {
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if errors.Is(err, ErrPoolNotFound) {
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err = fmt.Errorf("Failed as %w (internal %w)", ErrObjectNotFound, err)
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}
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return err
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}
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defer ioctx.Destroy()
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if namespace != "" {
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ioctx.SetNamespace(namespace)
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}
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err = ioctx.Delete(oMapName)
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if errors.Is(err, rados.ErrNotFound) {
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return fmt.Errorf("Failed as %w (internal %w)", ErrObjectNotFound, err)
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} else if err != nil {
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log.ErrorLog(ctx, "failed removing omap (%s) in pool (%s): (%v)", oMapName, poolName, err)
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return err
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}
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return nil
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}
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