notifier func, sequential job execution

core/healthcheck/counter.go

@@ -1,4 +1,4 @@
-package health
+package healthcheck
 
 import (
 	"time"

core/healthcheck/iface.go

@@ -1,4 +1,13 @@
-package health
+package healthcheck
+
+var (
+	// compile-time checks to ensure that implementations are compatible with the interface
+	_ = Storage(&SyncMapStorage{})
+	_ = Counter(&AtomicCounter{})
+	_ = Processor(CounterProcessor{})
+	_ = NotifyFunc(DefaultNotifyFunc)
+	_ = CounterConstructor(NewAtomicCounter)
+)
 
 // Storage stores different instances of Counter. Implementation should be goroutine-safe.
 type Storage interface {
@@ -55,7 +64,7 @@ type Counter interface {
 // Processor is used to check if Counter is in error state and act accordingly.
 type Processor interface {
 	// Process counter data. This method is not goroutine-safe!
-	Process(id int, counter Counter)
+	Process(id int, counter Counter) bool
 }
 
 // NotifyMessageLocalizer is the smallest subset of core.Localizer used in the
@@ -66,11 +75,11 @@ type NotifyMessageLocalizer interface {
 
 // NotifyFunc will send notification about error to the system with provided credentials.
 // It will send the notification to system admins.
-type NotifyFunc func(apiURL, apiKey, msg string)
+type NotifyFunc func(apiURL, apiKey, msg string) error
 
 // CounterConstructor is used to create counters. This way you can implement your own counter and still use default CounterStorage.
 type CounterConstructor func(name string) Counter
 
 // ConnectionDataProvider should return the connection credentials and language by counter ID.
 // It's best to use account ID as a counter ID to be able to retrieve the necessary data as easy as possible.
-type ConnectionDataProvider func(id int) (apiURL, apiKey, lang string)
+type ConnectionDataProvider func(id int) (apiURL, apiKey, lang string, exists bool)

core/healthcheck/notifier.go

@@ -0,0 +1,13 @@
+package healthcheck
+
+import retailcrm "github.com/retailcrm/api-client-go/v2"
+
+func DefaultNotifyFunc(apiURL, apiKey, msg string) error {
+	client := retailcrm.New(apiURL, apiKey)
+	_, err := client.NotificationsSend(retailcrm.NotificationsSendRequest{
+		UserGroups: []retailcrm.UserGroupType{retailcrm.UserGroupSuperadmins},
+		Type:       retailcrm.NotificationTypeError,
+		Message:    msg,
+	})
+	return err
+}

core/healthcheck/processor.go

@@ -1,4 +1,12 @@
-package health
+package healthcheck
+
+import (
+	"errors"
+
+	"github.com/retailcrm/mg-transport-core/v2/core/logger"
+)
+
+var ErrNoConnection = errors.New("no connection")
 
 const (
 	// DefaultMinRequests is a default minimal threshold of total requests. If Counter has less than this amount of requests
@@ -13,23 +21,34 @@ const (
 // CounterProcessor is a default implementation of Processor. It will try to localize the message in case of error.
 type CounterProcessor struct {
 	Localizer              NotifyMessageLocalizer
+	Logger                 logger.Logger
 	Notifier               NotifyFunc
 	ConnectionDataProvider ConnectionDataProvider
 	Error                  string
 	FailureThreshold       float64
 	MinRequests            uint32
+	Debug                  bool
 }
 
-func (c CounterProcessor) Process(id int, counter Counter) {
+func (c CounterProcessor) Process(id int, counter Counter) bool {
 	if counter.IsFailed() {
 		if counter.IsFailureProcessed() {
-			return
+			c.debugLog("skipping counter id=%d because its failure is already processed", id)
+			return true
 		}
 
-		apiURL, apiKey, _ := c.ConnectionDataProvider(id)
+		apiURL, apiKey, _, exists := c.ConnectionDataProvider(id)
-		c.Notifier(apiURL, apiKey, counter.Message())
+		if !exists {
+			c.debugLog("cannot find connection data for counter id=%d", id)
+			return true
+		}
+		err := c.Notifier(apiURL, apiKey, counter.Message())
+		if err != nil {
+			c.debugLog("cannot send notification for counter id=%d: %s (message: %s)",
+				id, err, counter.Message())
+		}
 		counter.FailureProcessed()
-		return
+		return true
 	}
 
 	succeeded := counter.TotalSucceeded()
@@ -38,7 +57,8 @@ func (c CounterProcessor) Process(id int, counter Counter) {
 	// Ignore this counter for now because total count of requests is less than minimal count.
 	// The results may not be representative.
 	if (succeeded + failed) < c.MinRequests {
-		return
+		c.debugLog("skipping counter id=%d because it has fewer than %d requests", id, c.MinRequests)
+		return true
 	}
 
 	// If more than FailureThreshold % of requests are successful, don't do anything.
@@ -46,18 +66,26 @@ func (c CounterProcessor) Process(id int, counter Counter) {
 	if (float64(succeeded) / float64(succeeded+failed)) >= c.FailureThreshold {
 		counter.ClearCountersProcessed()
 		counter.FlushCounters()
-		return
+		return true
 	}
 
-	// Do not process counters values twice if error ocurred.
+	// Do not process counters values twice if error occurred.
 	if counter.IsCountersProcessed() {
-		return
+		return true
 	}
 
-	apiURL, apiKey, lang := c.ConnectionDataProvider(id)
+	apiURL, apiKey, lang, exists := c.ConnectionDataProvider(id)
-	c.Notifier(apiURL, apiKey, c.getErrorText(counter.Name(), c.Error, lang))
+	if !exists {
+		c.debugLog("cannot find connection data for counter id=%d", id)
+		return true
+	}
+	err := c.Notifier(apiURL, apiKey, c.getErrorText(counter.Name(), c.Error, lang))
+	if err != nil {
+		c.debugLog("cannot send notification for counter id=%d: %s (message: %s)",
+			id, err, counter.Message())
+	}
 	counter.CountersProcessed()
-	return
+	return true
 }
 
 func (c CounterProcessor) getErrorText(name, msg, lang string) string {
@@ -65,5 +93,13 @@ func (c CounterProcessor) getErrorText(name, msg, lang string) string {
 		return msg
 	}
 	c.Localizer.SetLocale(lang)
-	return c.Localizer.GetLocalizedTemplateMessage(msg, map[string]interface{}{"Name": name})
+	return c.Localizer.GetLocalizedTemplateMessage(msg, map[string]interface{}{
+		"Name": name,
+	})
+}
+
+func (c CounterProcessor) debugLog(msg string, args ...interface{}) {
+	if c.Debug {
+		c.Logger.Debugf(msg, args...)
+	}
 }

core/healthcheck/storage.go

@@ -1,4 +1,4 @@
-package health
+package healthcheck
 
 import "sync"
 
@@ -33,7 +33,6 @@ func (s *SyncMapStorage) Remove(id int) {
 
 func (s *SyncMapStorage) Process(proc Processor) {
 	s.m.Range(func(key, value any) bool {
-		proc.Process(key.(int), value.(Counter))
+		return proc.Process(key.(int), value.(Counter))
-		return false
 	})
 }

core/job_manager.go

@@ -12,6 +12,15 @@ import (
 // JobFunc is empty func which should be executed in a parallel goroutine.
 type JobFunc func(logger.Logger) error
 
+// JobAfterCallback will be called after specific job is done.
+// This can be used to run something after asynchronous job is done. The function will
+// receive an error from the job which can be used to alter the callback behavior. If callback
+// returns an error, it will be processed using job ErrorHandler.
+// The callback won't be executed in case of panic. Panicked callback will be show in logs
+// as if the job itself panicked, ergo, do not write jobs or callbacks that can panic,
+// or process the panic by yourself.
+type JobAfterCallback func(jobError error, log logger.Logger) error
+
 // JobErrorHandler is a function to handle jobs errors. First argument is a job name.
 type JobErrorHandler func(string, error, logger.Logger)
 
@@ -32,6 +41,7 @@ type Job struct {
 
 // JobManager controls jobs execution flow. Jobs can be added just for later use (e.g. JobManager can be used as
 // singleton), or jobs can be executed as regular jobs. Example initialization:
+//
 //	    manager := NewJobManager().
 //			SetLogger(logger).
 //			SetLogging(false)
@@ -55,17 +65,24 @@ type JobManager struct {
 }
 
 // getWrappedFunc wraps job into function.
-func (j *Job) getWrappedFunc(name string, log logger.Logger) func() {
+func (j *Job) getWrappedFunc(name string, log logger.Logger) func(callback JobAfterCallback) {
-	return func() {
+	return func(callback JobAfterCallback) {
 		defer func() {
 			if r := recover(); r != nil && j.PanicHandler != nil {
 				j.PanicHandler(name, r, log)
 			}
 		}()
 
-		if err := j.Command(log); err != nil && j.ErrorHandler != nil {
+		err := j.Command(log)
+		if err != nil && j.ErrorHandler != nil {
 			j.ErrorHandler(name, err, log)
 		}
+		if callback != nil {
+			err := callback(err, log)
+			if j.ErrorHandler != nil {
+				j.ErrorHandler(name, err, log)
+			}
+		}
 	}
 }
 
@@ -77,7 +94,7 @@ func (j *Job) getWrappedTimerFunc(name string, log logger.Logger) func(chan bool
 			case <-stopChannel:
 				return
 			default:
-				j.getWrappedFunc(name, log)()
+				j.getWrappedFunc(name, log)(nil)
 			}
 		}
 	}
@@ -118,13 +135,13 @@ func (j *Job) stop() {
 }
 
 // runOnce run job once.
-func (j *Job) runOnce(name string, log logger.Logger) {
+func (j *Job) runOnce(name string, log logger.Logger, callback JobAfterCallback) {
-	go j.getWrappedFunc(name, log)()
+	go j.getWrappedFunc(name, log)(callback)
 }
 
 // runOnceSync run job once in current goroutine.
 func (j *Job) runOnceSync(name string, log logger.Logger) {
-	j.getWrappedFunc(name, log)()
+	j.getWrappedFunc(name, log)(nil)
 }
 
 // NewJobManager is a JobManager constructor.
@@ -241,15 +258,52 @@ func (j *JobManager) StopJob(name string) error {
 }
 
 // RunJobOnce starts provided job once if it exists. It's also async.
-func (j *JobManager) RunJobOnce(name string) error {
+func (j *JobManager) RunJobOnce(name string, callback ...JobAfterCallback) error {
 	if job, ok := j.FetchJob(name); ok {
-		job.runOnce(name, j.Logger())
+		var cb JobAfterCallback
+		if len(callback) > 0 {
+			cb = callback[0]
+		}
+		job.runOnce(name, j.Logger(), cb)
 		return nil
 	}
 
 	return fmt.Errorf("cannot find job `%s`", name)
 }
 
+// RunJobsOnceSequentially will execute provided jobs asynchronously. It uses JobAfterCallback under the hood.
+// You can prevent subsequent jobs from running using stopOnError flag.
+func (j *JobManager) RunJobsOnceSequentially(names []string, stopOnError bool) error {
+	if len(names) == 0 {
+		return nil
+	}
+
+	var chained JobAfterCallback
+	for i := len(names) - 1; i > 0; i-- {
+		i := i
+		if chained == nil {
+			chained = func(jobError error, log logger.Logger) error {
+				if jobError != nil && stopOnError {
+					return jobError
+				}
+				return j.RunJobOnce(names[i])
+			}
+			continue
+		}
+
+		oldCallback := chained
+		chained = func(jobError error, log logger.Logger) error {
+			if jobError != nil && stopOnError {
+				return jobError
+			}
+			err := j.RunJobOnce(names[i], oldCallback)
+			return err
+		}
+	}
+
+	return j.RunJobOnce(names[0], chained)
+}
+
 // RunJobOnceSync starts provided job once in current goroutine if job exists. Will wait for job to end it's work.
 func (j *JobManager) RunJobOnceSync(name string) error {
 	if job, ok := j.FetchJob(name); ok {

core/job_manager_test.go

@@ -293,7 +293,7 @@ func (t *JobTest) Test_getWrappedFunc() {
 	t.onceJob()
 	fn := t.job.getWrappedFunc("job", t.testLogger())
 	require.NotNil(t.T(), fn)
-	go fn()
+	go fn(nil)
 	assert.True(t.T(), t.executed())
 	assert.False(t.T(), t.errored(time.Millisecond))
 	assert.False(t.T(), t.panicked(time.Millisecond))
@@ -308,7 +308,7 @@ func (t *JobTest) Test_getWrappedFuncError() {
 	t.onceErrorJob()
 	fn := t.job.getWrappedFunc("job", t.testLogger())
 	require.NotNil(t.T(), fn)
-	go fn()
+	go fn(nil)
 	assert.True(t.T(), t.executed())
 	assert.True(t.T(), t.errored(time.Millisecond))
 	assert.False(t.T(), t.panicked(time.Millisecond))
@@ -323,7 +323,7 @@ func (t *JobTest) Test_getWrappedFuncPanic() {
 	t.oncePanicJob()
 	fn := t.job.getWrappedFunc("job", t.testLogger())
 	require.NotNil(t.T(), fn)
-	go fn()
+	go fn(nil)
 	assert.True(t.T(), t.executed())
 	assert.False(t.T(), t.errored(time.Millisecond))
 	assert.True(t.T(), t.panicked(time.Millisecond))
@@ -347,7 +347,7 @@ func (t *JobTest) Test_runOnce() {
 	}()
 
 	t.regularJob()
-	t.job.runOnce("job", t.testLogger())
+	t.job.runOnce("job", t.testLogger(), nil)
 	time.Sleep(time.Millisecond * 5)
 	require.True(t.T(), t.executed())
 	first := 0

go.mod

@@ -1,44 +1,78 @@
 module github.com/retailcrm/mg-transport-core/v2
 
-go 1.12
+go 1.18
 
 require (
-	cloud.google.com/go v0.60.0 // indirect
 	github.com/DATA-DOG/go-sqlmock v1.3.3
 	github.com/aws/aws-sdk-go v1.36.30
 	github.com/aws/aws-sdk-go-v2 v1.17.2
 	github.com/aws/aws-sdk-go-v2/config v1.18.4
 	github.com/aws/aws-sdk-go-v2/service/s3 v1.29.5
 	github.com/blacked/go-zabbix v0.0.0-20170118040903-3c6a95ec4fdc
-	github.com/denisenkom/go-mssqldb v0.0.0-20190830225923-3302f0226fbd // indirect
 	github.com/getsentry/sentry-go v0.12.0
 	github.com/gin-contrib/multitemplate v0.0.0-20190914010127-bba2ccfe37ec
 	github.com/gin-gonic/gin v1.7.2
 	github.com/go-playground/validator/v10 v10.8.0
-	github.com/go-sql-driver/mysql v1.5.0 // indirect
-	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/gomarkdown/markdown v0.0.0-20221013030248-663e2500819c
 	github.com/gorilla/securecookie v1.1.1
 	github.com/gorilla/sessions v1.2.0
 	github.com/jessevdk/go-flags v1.4.0
 	github.com/jinzhu/gorm v1.9.11
-	github.com/json-iterator/go v1.1.11 // indirect
-	github.com/kr/text v0.2.0 // indirect
-	github.com/lib/pq v1.9.0 // indirect
 	github.com/nicksnyder/go-i18n/v2 v2.0.2
-	github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect
 	github.com/op/go-logging v0.0.0-20160315200505-970db520ece7
 	github.com/pkg/errors v0.9.1
-	github.com/retailcrm/api-client-go/v2 v2.0.12
+	github.com/retailcrm/api-client-go/v2 v2.1.3
 	github.com/retailcrm/mg-transport-api-client-go v1.1.32
 	github.com/retailcrm/zabbix-metrics-collector v1.0.0
 	github.com/stretchr/testify v1.8.1
-	github.com/ugorji/go v1.2.6 // indirect
 	go.uber.org/atomic v1.10.0
 	golang.org/x/text v0.3.7
-	google.golang.org/protobuf v1.27.1 // indirect
-	gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f // indirect
 	gopkg.in/gormigrate.v1 v1.6.0
 	gopkg.in/h2non/gock.v1 v1.1.2
 	gopkg.in/yaml.v2 v2.4.0
 )
+
+require (
+	cloud.google.com/go v0.60.0 // indirect
+	github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.4.10 // indirect
+	github.com/aws/aws-sdk-go-v2/credentials v1.13.4 // indirect
+	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.12.20 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/configsources v1.1.26 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.4.20 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/ini v1.3.27 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/v4a v1.0.17 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.9.11 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/checksum v1.1.21 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.9.20 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.13.20 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sso v1.11.26 // indirect
+	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.13.9 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sts v1.17.6 // indirect
+	github.com/aws/smithy-go v1.13.5 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/denisenkom/go-mssqldb v0.0.0-20190830225923-3302f0226fbd // indirect
+	github.com/gin-contrib/sse v0.1.0 // indirect
+	github.com/go-playground/locales v0.13.0 // indirect
+	github.com/go-playground/universal-translator v0.17.0 // indirect
+	github.com/go-sql-driver/mysql v1.5.0 // indirect
+	github.com/golang/protobuf v1.5.2 // indirect
+	github.com/google/go-querystring v1.1.0 // indirect
+	github.com/h2non/parth v0.0.0-20190131123155-b4df798d6542 // indirect
+	github.com/jinzhu/inflection v1.0.0 // indirect
+	github.com/jmespath/go-jmespath v0.4.0 // indirect
+	github.com/json-iterator/go v1.1.11 // indirect
+	github.com/kr/text v0.2.0 // indirect
+	github.com/leodido/go-urn v1.2.1 // indirect
+	github.com/lib/pq v1.9.0 // indirect
+	github.com/mattn/go-isatty v0.0.14 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.1 // indirect
+	github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/ugorji/go/codec v1.2.6 // indirect
+	golang.org/x/crypto v0.0.0-20210921155107-089bfa567519 // indirect
+	golang.org/x/sys v0.0.0-20211007075335-d3039528d8ac // indirect
+	google.golang.org/protobuf v1.27.1 // indirect
+	gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)

go.sum

@@ -361,8 +361,8 @@ github.com/prometheus/common v0.2.0/go.mod h1:TNfzLD0ON7rHzMJeJkieUDPYmFC7Snx/y8
 github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
 github.com/prometheus/procfs v0.0.0-20190117184657-bf6a532e95b1/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
 github.com/rcrowley/go-metrics v0.0.0-20181016184325-3113b8401b8a/go.mod h1:bCqnVzQkZxMG4s8nGwiZ5l3QUCyqpo9Y+/ZMZ9VjZe4=
-github.com/retailcrm/api-client-go/v2 v2.0.12 h1:0pMDsz4fzKpizUxoF1qtgwN+oJ+YJruncCj6OTOB3e8=
+github.com/retailcrm/api-client-go/v2 v2.1.3 h1:AVcp9oeSOm6+3EWXCgdQs+XE3PTjzCKKB//MUAe0Zb0=
-github.com/retailcrm/api-client-go/v2 v2.0.12/go.mod h1:1yTZl9+gd3+/k0kAJe7sYvC+mL4fqMwIwtnSgSWZlkQ=
+github.com/retailcrm/api-client-go/v2 v2.1.3/go.mod h1:1yTZl9+gd3+/k0kAJe7sYvC+mL4fqMwIwtnSgSWZlkQ=
 github.com/retailcrm/mg-transport-api-client-go v1.1.32 h1:IBPltSoD5q2PPZJbNC/prK5F9rEVPXVx/ZzDpi7HKhs=
 github.com/retailcrm/mg-transport-api-client-go v1.1.32/go.mod h1:AWV6BueE28/6SCoyfKURTo4lF0oXYoOKmHTzehd5vAI=
 github.com/retailcrm/zabbix-metrics-collector v1.0.0 h1:ju3rhpgVoiKII6oXEJEf2eoJy5bNcYAmOPRp1oPWDmA=
@@ -397,7 +397,6 @@ github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKs
 github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
 github.com/ugorji/go v1.1.4/go.mod h1:uQMGLiO92mf5W77hV/PUCpI3pbzQx3CRekS0kk+RGrc=
 github.com/ugorji/go v1.1.7/go.mod h1:kZn38zHttfInRq0xu/PH0az30d+z6vm202qpg1oXVMw=
-github.com/ugorji/go v1.2.6 h1:tGiWC9HENWE2tqYycIqFTNorMmFRVhNwCpDOpWqnk8E=
 github.com/ugorji/go v1.2.6/go.mod h1:anCg0y61KIhDlPZmnH+so+RQbysYVyDko0IMgJv0Nn0=
 github.com/ugorji/go/codec v0.0.0-20181204163529-d75b2dcb6bc8/go.mod h1:VFNgLljTbGfSG7qAOspJ7OScBnGdDN/yBr0sguwnwf0=
 github.com/ugorji/go/codec v1.1.7/go.mod h1:Ax+UKWsSmolVDwsd+7N3ZtXu+yMGCf907BLYF3GoBXY=