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Support config file for configration
Signed-off-by: Swapnil Mhamane <[email protected]>
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Swapnil Mhamane
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Dec 10, 2019
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| Original file line number | Diff line number | Diff line change |
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| // Copyright (c) 2019 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package cmd | ||
|
|
||
| import ( | ||
| "context" | ||
| "io/ioutil" | ||
|
|
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| "github.com/gardener/etcd-backup-restore/pkg/snapshot/snapshotter" | ||
|
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| "github.com/gardener/etcd-backup-restore/pkg/etcdutil" | ||
|
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| "github.com/gardener/etcd-backup-restore/pkg/snapstore" | ||
|
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| "github.com/gardener/etcd-backup-restore/pkg/initializer/validator" | ||
| "github.com/gardener/etcd-backup-restore/pkg/snapshot/restorer" | ||
|
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||
| "github.com/gardener/etcd-backup-restore/pkg/server" | ||
| "github.com/ghodss/yaml" | ||
| "github.com/sirupsen/logrus" | ||
| flag "github.com/spf13/pflag" | ||
| ) | ||
|
|
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| type serverOptions struct { | ||
| ConfigFile string | ||
| Version bool | ||
| LogLevel uint32 | ||
| Logger *logrus.Logger | ||
| Config *server.BackupRestoreComponentConfig | ||
| } | ||
|
|
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| // newServerOptions returns a new Options object. | ||
| func newServerOptions() *serverOptions { | ||
| logger := logrus.New() | ||
| logger.SetLevel(logrus.InfoLevel) | ||
|
|
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| return &serverOptions{ | ||
| LogLevel: 4, | ||
| Version: false, | ||
| Config: server.NewBackupRestoreComponentConfig(), | ||
| Logger: logger, | ||
| } | ||
| } | ||
|
|
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| func (o *serverOptions) validate() error { | ||
| return o.Config.Validate() | ||
| } | ||
|
|
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| func (o *serverOptions) addFlags(fs *flag.FlagSet) { | ||
| fs.StringVar(&o.ConfigFile, "config-file", o.ConfigFile, "path to the configuration file") | ||
| fs.Uint32Var(&o.LogLevel, "log-level", o.LogLevel, "verbosity level of logs") | ||
| o.Config.AddFlags(fs) | ||
| } | ||
|
|
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| func (o *serverOptions) complete() { | ||
| o.Config.Complete() | ||
| o.Logger.SetLevel(logrus.Level(o.LogLevel)) | ||
| } | ||
|
|
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| func (o *serverOptions) loadConfigFromFile() error { | ||
| if len(o.ConfigFile) != 0 { | ||
| data, err := ioutil.ReadFile(o.ConfigFile) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| config := server.NewBackupRestoreComponentConfig() | ||
| if err := yaml.Unmarshal(data, config); err != nil { | ||
| return err | ||
| } | ||
| o.Config = config | ||
| } | ||
| // TODO: Overwrite config with flags | ||
| return nil | ||
| } | ||
|
|
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| func (o *serverOptions) run(ctx context.Context) error { | ||
| brServer, err := server.NewBackupRestoreServer(o.Logger, o.Config) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| return brServer.Run(ctx) | ||
| } | ||
|
|
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| type initializerOptions struct { | ||
| validatorOptions *validatorOptions | ||
| restorerOptions *restorerOptions | ||
| } | ||
|
|
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| // newInitializerOptions returns the validation config. | ||
| func newInitializerOptions() *initializerOptions { | ||
| return &initializerOptions{ | ||
| validatorOptions: newValidatorOptions(), | ||
| restorerOptions: newRestorerOptions(), | ||
| } | ||
| } | ||
|
|
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| // AddFlags adds the flags to flagset. | ||
| func (c *initializerOptions) addFlags(fs *flag.FlagSet) { | ||
| c.validatorOptions.addFlags(fs) | ||
| c.restorerOptions.addFlags(fs) | ||
| } | ||
|
|
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| // Validate validates the config. | ||
| func (c *initializerOptions) validate() error { | ||
| if err := c.validatorOptions.validate(); err != nil { | ||
| return err | ||
| } | ||
|
|
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| return c.restorerOptions.validate() | ||
| } | ||
|
|
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| // Complete completes the config. | ||
| func (c *initializerOptions) complete() { | ||
| c.restorerOptions.complete() | ||
| } | ||
|
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| type restorerOptions struct { | ||
| restorationConfig *restorer.RestorationConfig | ||
| snapstoreConfig *snapstore.Config | ||
| } | ||
|
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| // newRestorerOptions returns the validation config. | ||
| func newRestorerOptions() *restorerOptions { | ||
| return &restorerOptions{ | ||
| restorationConfig: restorer.NewRestorationConfig(), | ||
| snapstoreConfig: snapstore.NewSnapstoreConfig(), | ||
| } | ||
| } | ||
|
|
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| // AddFlags adds the flags to flagset. | ||
| func (c *restorerOptions) addFlags(fs *flag.FlagSet) { | ||
| c.restorationConfig.AddFlags(fs) | ||
| c.snapstoreConfig.AddFlags(fs) | ||
| } | ||
|
|
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| // Validate validates the config. | ||
| func (c *restorerOptions) validate() error { | ||
| if err := c.snapstoreConfig.Validate(); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| return c.restorationConfig.Validate() | ||
| } | ||
|
|
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| // complete completes the config. | ||
| func (c *restorerOptions) complete() { | ||
| c.snapstoreConfig.Complete() | ||
| } | ||
|
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| type validatorOptions struct { | ||
| ValidationMode string `json:"validationMode,omitempty"` | ||
| FailBelowRevision int64 `json:"experimentalFailBelowRevision,omitempty"` | ||
| } | ||
|
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| // newValidatorOptions returns the validation config. | ||
| func newValidatorOptions() *validatorOptions { | ||
| return &validatorOptions{ | ||
| ValidationMode: string(validator.Full), | ||
| } | ||
| } | ||
|
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| // AddFlags adds the flags to flagset. | ||
| func (c *validatorOptions) addFlags(fs *flag.FlagSet) { | ||
| fs.StringVar(&c.ValidationMode, "validation-mode", string(c.ValidationMode), "mode to do data initialization[full/sanity]") | ||
| fs.Int64Var(&c.FailBelowRevision, "experimental-fail-below-revision", c.FailBelowRevision, "minimum required etcd revision, below which validation fails") | ||
| } | ||
|
|
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| // Validate validates the config. | ||
| func (c *validatorOptions) validate() error { | ||
| return nil | ||
| } | ||
|
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| type snapshotterOptions struct { | ||
| etcdConnectionConfig *etcdutil.EtcdConnectionConfig | ||
| snapstoreConfig *snapstore.Config | ||
| snapshotterConfig *snapshotter.Config | ||
| defragmentationSchedule string | ||
| } | ||
|
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| // newSnapshotterOptions returns the snapshotter options. | ||
| func newSnapshotterOptions() *snapshotterOptions { | ||
| return &snapshotterOptions{ | ||
| etcdConnectionConfig: etcdutil.NewEtcdConnectionConfig(), | ||
| snapstoreConfig: snapstore.NewSnapstoreConfig(), | ||
| snapshotterConfig: snapshotter.NewSnapshotterConfig(), | ||
| defragmentationSchedule: "0 0 */3 * *", | ||
| } | ||
| } | ||
|
|
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| // AddFlags adds the flags to flagset. | ||
| func (c *snapshotterOptions) addFlags(fs *flag.FlagSet) { | ||
| c.etcdConnectionConfig.AddFlags(fs) | ||
| c.snapstoreConfig.AddFlags(fs) | ||
| c.snapshotterConfig.AddFlags(fs) | ||
|
|
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| // Miscellaneous | ||
| fs.StringVar(&c.defragmentationSchedule, "defragmentation-schedule", c.defragmentationSchedule, "schedule to defragment etcd data directory") | ||
| } | ||
|
|
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| // Validate validates the config. | ||
| func (c *snapshotterOptions) validate() error { | ||
| if err := c.snapstoreConfig.Validate(); err != nil { | ||
| return err | ||
| } | ||
|
|
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| if err := c.snapshotterConfig.Validate(); err != nil { | ||
| return err | ||
| } | ||
|
|
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| return c.etcdConnectionConfig.Validate() | ||
| } | ||
|
|
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| // complete completes the config. | ||
| func (c *snapshotterOptions) complete() { | ||
| c.snapstoreConfig.Complete() | ||
| } |
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