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context.go
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context.go
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// Copyright Project Harbor Authors
//
// 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 impl
import (
"context"
"fmt"
"math"
"time"
"errors"
comcfg "github.com/goharbor/harbor/src/common/config"
"github.com/goharbor/harbor/src/common/dao"
"github.com/goharbor/harbor/src/jobservice/config"
"github.com/goharbor/harbor/src/jobservice/job"
"github.com/goharbor/harbor/src/jobservice/logger"
"github.com/goharbor/harbor/src/jobservice/logger/sweeper"
)
const (
maxRetryTimes = 5
)
// Context ...
type Context struct {
// System context
sysContext context.Context
// Logger for job
logger logger.Interface
// other required information
properties map[string]interface{}
// admin server client
cfgMgr comcfg.CfgManager
// job life cycle tracker
tracker job.Tracker
}
// NewContext ...
func NewContext(sysCtx context.Context, cfgMgr *comcfg.CfgManager) *Context {
return &Context{
sysContext: sysCtx,
cfgMgr: *cfgMgr,
properties: make(map[string]interface{}),
}
}
// Init ...
func (c *Context) Init() error {
var (
counter = 0
err error
)
for counter == 0 || err != nil {
counter++
err = c.cfgMgr.Load()
if err != nil {
logger.Errorf("Job context initialization error: %s\n", err.Error())
if counter < maxRetryTimes {
backoff := (int)(math.Pow(2, (float64)(counter))) + 2*counter + 5
logger.Infof("Retry in %d seconds", backoff)
time.Sleep(time.Duration(backoff) * time.Second)
} else {
return fmt.Errorf("job context initialization error: %s (%d times tried)", err.Error(), counter)
}
}
}
db := c.cfgMgr.GetDatabaseCfg()
err = dao.InitDatabase(db)
if err != nil {
return err
}
// Initialize DB finished
initDBCompleted()
return nil
}
// Build implements the same method in env.JobContext interface
// This func will build the job execution context before running
func (c *Context) Build(tracker job.Tracker) (job.Context, error) {
if tracker == nil || tracker.Job() == nil {
return nil, errors.New("nil job tracker")
}
jContext := &Context{
sysContext: c.sysContext,
cfgMgr: c.cfgMgr,
properties: make(map[string]interface{}),
tracker: tracker,
}
// Copy properties
if len(c.properties) > 0 {
for k, v := range c.properties {
jContext.properties[k] = v
}
}
// Refresh config properties
err := c.cfgMgr.Load()
if err != nil {
return nil, err
}
props := c.cfgMgr.GetAll()
for k, v := range props {
jContext.properties[k] = v
}
// Set loggers for job
lg, err := createLoggers(tracker.Job().Info.JobID)
if err != nil {
return nil, err
}
jContext.logger = lg
return jContext, nil
}
// Get implements the same method in env.JobContext interface
func (c *Context) Get(prop string) (interface{}, bool) {
v, ok := c.properties[prop]
return v, ok
}
// SystemContext implements the same method in env.JobContext interface
func (c *Context) SystemContext() context.Context {
return c.sysContext
}
// Checkin is bridge func for reporting detailed status
func (c *Context) Checkin(status string) error {
return c.tracker.CheckIn(status)
}
// OPCommand return the control operational command like stop/cancel if have
func (c *Context) OPCommand() (job.OPCommand, bool) {
latest, err := c.tracker.Status()
if err != nil {
return job.NilCommand, false
}
if job.StoppedStatus == latest {
return job.StopCommand, true
}
return job.NilCommand, false
}
// GetLogger returns the logger
func (c *Context) GetLogger() logger.Interface {
return c.logger
}
// Tracker returns the job tracker attached with the context
func (c *Context) Tracker() job.Tracker {
return c.tracker
}
// create loggers based on the configurations.
func createLoggers(jobID string) (logger.Interface, error) {
// Init job loggers here
lOptions := make([]logger.Option, 0)
for _, lc := range config.DefaultConfig.JobLoggerConfigs {
// For running job, the depth should be 5
if lc.Name == logger.NameFile || lc.Name == logger.NameStdOutput || lc.Name == logger.NameDB {
if lc.Settings == nil {
lc.Settings = map[string]interface{}{}
}
lc.Settings["depth"] = 5
}
if lc.Name == logger.NameFile || lc.Name == logger.NameDB {
// Need extra param
fSettings := map[string]interface{}{}
for k, v := range lc.Settings {
// Copy settings
fSettings[k] = v
}
if lc.Name == logger.NameFile {
// Append file name param
fSettings["filename"] = fmt.Sprintf("%s.log", jobID)
lOptions = append(lOptions, logger.BackendOption(lc.Name, lc.Level, fSettings))
} else { // DB Logger
// Append DB key
fSettings["key"] = jobID
lOptions = append(lOptions, logger.BackendOption(lc.Name, lc.Level, fSettings))
}
} else {
lOptions = append(lOptions, logger.BackendOption(lc.Name, lc.Level, lc.Settings))
}
}
// Get logger for the job
return logger.GetLogger(lOptions...)
}
func initDBCompleted() error {
sweeper.PrepareDBSweep()
return nil
}