Travis Nielsen
c122562a7d
Remove all cgo from the code base, and start the transformation to calling external ceph tools to generate config and start daemons.
116 lines
3.3 KiB
Go
116 lines
3.3 KiB
Go
/*
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Copyright 2016 The Rook Authors. All rights reserved.
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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 mds
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import (
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"fmt"
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"path"
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"regexp"
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"github.com/rook/rook/pkg/ceph/mon"
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"github.com/rook/rook/pkg/clusterd"
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"github.com/rook/rook/pkg/util"
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"github.com/rook/rook/pkg/util/proc"
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)
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type Config struct {
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ID string
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Keyring string
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InProc bool
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ClusterInfo *mon.ClusterInfo
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}
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func Run(context *clusterd.Context, config *Config) error {
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err := generateConfigFiles(context, config)
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if err != nil {
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return fmt.Errorf("failed to generate mds config files. %+v", err)
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}
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_, err = startMDS(context, config)
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if err != nil {
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return fmt.Errorf("failed to run mds. %+v", err)
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}
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return err
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}
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func generateConfigFiles(context *clusterd.Context, config *Config) error {
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// write the latest config to the config dir
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if err := mon.GenerateAdminConnectionConfig(context, config.ClusterInfo); err != nil {
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return fmt.Errorf("failed to write connection config. %+v", err)
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}
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keyringPath := getMDSKeyringPath(context.ConfigDir, config.ID)
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_, err := mon.GenerateConnectionConfigFile(context, config.ClusterInfo, getMDSConfDir(context.ConfigDir, config.ID),
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fmt.Sprintf("mds.%s", config.ID), keyringPath)
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if err != nil {
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return fmt.Errorf("failed to create mds config file. %+v", err)
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}
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keyringEval := func(key string) string {
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return fmt.Sprintf(keyringTemplate, config.ID, key)
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}
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err = mon.WriteKeyring(keyringPath, config.Keyring, keyringEval)
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if err != nil {
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return fmt.Errorf("failed to create mds keyring. %+v", err)
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}
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return nil
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}
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func startMDS(context *clusterd.Context, config *Config) (mdsProc *proc.MonitoredProc, err error) {
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// start the mds daemon in the foreground with the given config
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logger.Infof("starting mds %s", config.ID)
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confFile := getMDSConfFilePath(context.ConfigDir, config.ID, config.ClusterInfo.Name)
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util.WriteFileToLog(logger, confFile)
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mdsNameArg := fmt.Sprintf("--name=mds.%s", config.ID)
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args := []string{
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"--foreground",
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mdsNameArg,
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fmt.Sprintf("--cluster=%s", config.ClusterInfo.Name),
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fmt.Sprintf("--conf=%s", confFile),
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fmt.Sprintf("--keyring=%s", getMDSKeyringPath(context.ConfigDir, config.ID)),
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"-i", config.ID,
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}
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name := fmt.Sprintf("mds%s", config.ID)
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if config.InProc {
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err = context.ProcMan.Run(name, "ceph-mds", args...)
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} else {
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mdsProc, err = context.ProcMan.Start(name, "ceph-mds", regexp.QuoteMeta(mdsNameArg), proc.ReuseExisting, args...)
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}
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if err != nil {
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err = fmt.Errorf("failed to start mds: %+v", err)
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}
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return
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}
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func getMDSConfDir(dir, id string) string {
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return path.Join(dir, fmt.Sprintf("mds%s", id))
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}
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func getMDSConfFilePath(dir, id, clusterName string) string {
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return path.Join(getMDSConfDir(dir, id), fmt.Sprintf("%s.config", clusterName))
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}
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func getMDSKeyringPath(dir, id string) string {
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return path.Join(getMDSConfDir(dir, id), "keyring")
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}
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