docker-volume-backup/cmd/backup/hooks.go

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// Copyright 2022 - Offen Authors <hioffen@posteo.de>
// SPDX-License-Identifier: MPL-2.0
package main
import (
"fmt"
"sort"
Added abstract helper interface for all storage backends (#135) * Added abstract helper interface and implemented it for all storage backends * Moved storage client initializations also to helper classes * Fixed ssh init issue * Moved script parameter to helper struct to simplify script init. * Created sub modules. Enhanced abstract implementation. * Fixed config issue * Fixed declaration issues. Added config to interface. * Added StorageProviders to unify all backends. * Cleanup, optimizations, comments. * Applied discussed changes. See description. Moved modules to internal packages. Replaced StoragePool with slice. Moved conditional for init of storage backends back to script. * Fix docker build issue * Fixed accidentally removed local copy condition. * Delete .gitignore * Renaming/changes according to review Renamed Init functions and interface. Replaced config object with specific config values. Init func returns interface instead of struct. Removed custom import names where possible. * Fixed auto-complete error. * Combined copy instructions into one layer. * Added logging func for storages. * Introduced logging func for errors too. * Missed an error message * Moved config back to main. Optimized prune stats handling. * Move stats back to main package * Code doc stuff * Apply changes from #136 * Replace name field with function. * Changed receiver names from stg to b. * Renamed LogFuncDef to Log * Removed redundant package name. * Renamed storagePool to storages. * Simplified creation of new storage backend. * Added initialization for storage stats map. * Invert .dockerignore patterns. * Fix package typo
2022-08-18 08:52:09 +02:00
"github.com/offen/docker-volume-backup/internal/utilities"
)
// hook contains a queued action that can be trigger them when the script
// reaches a certain point (e.g. unsuccessful backup)
type hook struct {
level hookLevel
action func(err error) error
}
type hookLevel int
const (
hookLevelPlumbing hookLevel = iota
hookLevelError
hookLevelInfo
)
var hookLevels = map[string]hookLevel{
"info": hookLevelInfo,
"error": hookLevelError,
}
// registerHook adds the given action at the given level.
func (s *script) registerHook(level hookLevel, action func(err error) error) {
s.hooks = append(s.hooks, hook{level, action})
}
// runHooks runs all hooks that have been registered using the
// given levels in the defined ordering. In case executing a hook returns an
// error, the following hooks will still be run before the function returns.
func (s *script) runHooks(err error) error {
sort.SliceStable(s.hooks, func(i, j int) bool {
return s.hooks[i].level < s.hooks[j].level
})
var actionErrors []error
for _, hook := range s.hooks {
if hook.level > s.hookLevel {
continue
}
if actionErr := hook.action(err); actionErr != nil {
actionErrors = append(actionErrors, fmt.Errorf("runHooks: error running hook: %w", actionErr))
}
}
if len(actionErrors) != 0 {
Added abstract helper interface for all storage backends (#135) * Added abstract helper interface and implemented it for all storage backends * Moved storage client initializations also to helper classes * Fixed ssh init issue * Moved script parameter to helper struct to simplify script init. * Created sub modules. Enhanced abstract implementation. * Fixed config issue * Fixed declaration issues. Added config to interface. * Added StorageProviders to unify all backends. * Cleanup, optimizations, comments. * Applied discussed changes. See description. Moved modules to internal packages. Replaced StoragePool with slice. Moved conditional for init of storage backends back to script. * Fix docker build issue * Fixed accidentally removed local copy condition. * Delete .gitignore * Renaming/changes according to review Renamed Init functions and interface. Replaced config object with specific config values. Init func returns interface instead of struct. Removed custom import names where possible. * Fixed auto-complete error. * Combined copy instructions into one layer. * Added logging func for storages. * Introduced logging func for errors too. * Missed an error message * Moved config back to main. Optimized prune stats handling. * Move stats back to main package * Code doc stuff * Apply changes from #136 * Replace name field with function. * Changed receiver names from stg to b. * Renamed LogFuncDef to Log * Removed redundant package name. * Renamed storagePool to storages. * Simplified creation of new storage backend. * Added initialization for storage stats map. * Invert .dockerignore patterns. * Fix package typo
2022-08-18 08:52:09 +02:00
return utilities.Join(actionErrors...)
}
return nil
}