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8393fbe40b
The sentinel error code had additional fields in the errors, that are used nowhere. This leads to unneccesarily complicated code. This change replaces the sentinel errors in utils with standard errors created with errors.New() and adds a simple JoinErrors() function to be able to combine sentinel errors from different code tiers. Related: #1203 Signed-off-by: Sven Anderson <sven@redhat.com>
86 lines
2.1 KiB
Go
86 lines
2.1 KiB
Go
/*
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Copyright 2020 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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"errors"
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"fmt"
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"time"
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"github.com/ceph/go-ceph/rados"
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)
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type ClusterConnection struct {
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// connection
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conn *rados.Conn
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// FIXME: temporary reference for credentials. Remove this when go-ceph
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// is used for operations.
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Creds *Credentials
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}
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var (
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// large interval and timeout, it should be longer than the maximum
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// time an operation can take (until refcounting of the connections is
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// available)
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cpInterval = 15 * time.Minute
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cpExpiry = 10 * time.Minute
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connPool = NewConnPool(cpInterval, cpExpiry)
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)
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// rbdVol.Connect() connects to the Ceph cluster and sets rbdVol.conn for further usage.
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func (cc *ClusterConnection) Connect(monitors string, cr *Credentials) error {
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if cc.conn == nil {
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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 fmt.Errorf("failed to get connection: %w", err)
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}
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cc.conn = conn
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// FIXME: remove .Creds from ClusterConnection
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cc.Creds = cr
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}
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return nil
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}
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func (cc *ClusterConnection) Destroy() {
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if cc.conn != nil {
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connPool.Put(cc.conn)
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}
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}
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func (cc *ClusterConnection) GetIoctx(pool string) (*rados.IOContext, error) {
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if cc.conn == nil {
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return nil, errors.New("cluster is not connected yet")
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}
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ioctx, err := cc.conn.OpenIOContext(pool)
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if err != nil {
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// ErrNotFound indicates the Pool was not found
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if errors.Is(err, rados.ErrNotFound) {
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err = JoinErrors(ErrPoolNotFound, err)
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} else {
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err = fmt.Errorf("failed to open IOContext for pool %s: %w", pool, err)
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}
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return nil, err
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}
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return ioctx, nil
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}
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