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config.go
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config.go
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// Copyright 2020 Douyu
//
// 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 xcron
import (
"fmt"
"runtime"
"time"
"github.com/hahawangxv/kevin/pkg/metric"
"go.uber.org/zap"
"github.com/hahawangxv/kevin/pkg/conf"
"github.com/hahawangxv/kevin/pkg/xlog"
"github.com/robfig/cron/v3"
)
// StdConfig ...
func StdConfig(name string) Config {
return RawConfig("jupiter.cron." + name)
}
// RawConfig ...
func RawConfig(key string) Config {
var config = DefaultConfig()
if err := conf.UnmarshalKey(key, &config); err != nil {
xlog.Panic("unmarshal", xlog.String("key", key))
}
return config
}
// DefaultConfig ...
func DefaultConfig() Config {
return Config{
logger: xlog.DefaultLogger,
wrappers: []JobWrapper{},
WithSeconds: false,
ImmediatelyRun: false,
ConcurrentDelay: -1, // skip
}
}
// Config ...
type Config struct {
WithSeconds bool
ConcurrentDelay time.Duration
ImmediatelyRun bool
wrappers []JobWrapper
logger *xlog.Logger
parser cron.Parser
}
// WithChain ...
func (config *Config) WithChain(wrappers ...JobWrapper) Config {
if config.wrappers == nil {
config.wrappers = []JobWrapper{}
}
config.wrappers = append(config.wrappers, wrappers...)
return *config
}
// WithLogger ...
func (config *Config) WithLogger(logger *xlog.Logger) Config {
config.logger = logger
return *config
}
// WithParser ...
func (config *Config) WithParser(parser Parser) Config {
config.parser = parser
return *config
}
// Build ...
func (config Config) Build() *Cron {
if config.WithSeconds {
config.parser = cron.NewParser(cron.Second | cron.Minute | cron.Hour | cron.Dom | cron.Month | cron.Dow | cron.Descriptor)
}
if config.ConcurrentDelay > 0 { // 延迟
config.wrappers = append(config.wrappers, delayIfStillRunning(config.logger))
} else if config.ConcurrentDelay < 0 { // 跳过
config.wrappers = append(config.wrappers, skipIfStillRunning(config.logger))
} else {
// 默认不延迟也不跳过
}
return newCron(&config)
}
type wrappedLogger struct {
*xlog.Logger
}
// Info logs routine messages about cron's operation.
func (wl *wrappedLogger) Info(msg string, keysAndValues ...interface{}) {
wl.Infow("cron "+msg, keysAndValues...)
}
// Error logs an error condition.
func (wl *wrappedLogger) Error(err error, msg string, keysAndValues ...interface{}) {
wl.Errorw("cron "+msg, append(keysAndValues, "err", err)...)
}
type wrappedJob struct {
NamedJob
logger *xlog.Logger
}
// Run ...
func (wj wrappedJob) Run() {
_ = wj.run()
}
func (wj wrappedJob) run() (err error) {
metric.JobHandleCounter.Inc("cron", wj.Name(), "begin")
var fields = []xlog.Field{zap.String("name", wj.Name())}
var beg = time.Now()
defer func() {
if rec := recover(); rec != nil {
switch rec := rec.(type) {
case error:
err = rec
default:
err = fmt.Errorf("%v", rec)
}
stack := make([]byte, 4096)
length := runtime.Stack(stack, true)
fields = append(fields, zap.ByteString("stack", stack[:length]))
}
if err != nil {
fields = append(fields, xlog.String("err", err.Error()), xlog.Duration("cost", time.Since(beg)))
wj.logger.Error("run", fields...)
} else {
wj.logger.Info("run", fields...)
}
metric.JobHandleHistogram.Observe(time.Since(beg).Seconds(), "cron", wj.Name())
}()
return wj.NamedJob.Run()
}