cli: fix cron triggers not being exported on a metadata export (close h…

…asura#5047) (hasura#5060)

cli/commands/init.go

@@ -7,6 +7,8 @@ import (
 	"path/filepath"
 	"strings"
 
+	crontriggers "github.com/hasura/graphql-engine/cli/metadata/cron_triggers"
+
 	"github.com/hasura/graphql-engine/cli/metadata/actions"
 	"github.com/hasura/graphql-engine/cli/metadata/actions/types"
 	"github.com/hasura/graphql-engine/cli/metadata/allowlist"
@@ -251,6 +253,7 @@ func (o *InitOptions) createFiles() error {
 		plugins = append(plugins, allowlist.New(o.EC, o.EC.MetadataDir))
 		plugins = append(plugins, remoteschemas.New(o.EC, o.EC.MetadataDir))
 		plugins = append(plugins, actions.New(o.EC, o.EC.MetadataDir))
+		plugins = append(plugins, crontriggers.New(o.EC, o.EC.MetadataDir))
 		for _, plg := range plugins {
 			err := plg.CreateFiles()
 			if err != nil {

cli/integration_test/v2/metadata/latest/1_metadata/cron_triggers.yaml

@@ -0,0 +1 @@
+[]

cli/integration_test/v2/metadata/latest/2_metadata/cron_triggers.yaml

@@ -0,0 +1 @@
+[]

cli/metadata/cron_triggers/cron_triggers.go

@@ -0,0 +1,100 @@
+package crontriggers
+
+import (
+	"io/ioutil"
+	"path/filepath"
+
+	"github.com/hasura/graphql-engine/cli/version"
+
+	"github.com/hasura/graphql-engine/cli"
+	"github.com/sirupsen/logrus"
+	"gopkg.in/yaml.v2"
+)
+
+const (
+	fileName    string = "cron_triggers.yaml"
+	metadataKey        = "cron_triggers"
+)
+
+type CronTriggers struct {
+	MetadataDir string
+
+	logger             *logrus.Logger
+	serverFeatureFlags *version.ServerFeatureFlags
+}
+
+func New(ec *cli.ExecutionContext, baseDir string) *CronTriggers {
+	return &CronTriggers{
+		MetadataDir:        baseDir,
+		logger:             ec.Logger,
+		serverFeatureFlags: ec.Version.ServerFeatureFlags,
+	}
+}
+
+func (c *CronTriggers) Validate() error {
+	return nil
+}
+
+func (c *CronTriggers) CreateFiles() error {
+	v := make([]interface{}, 0)
+	data, err := yaml.Marshal(v)
+	if err != nil {
+		return err
+	}
+	err = ioutil.WriteFile(filepath.Join(c.MetadataDir, fileName), data, 0644)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func (c *CronTriggers) Build(metadata *yaml.MapSlice) error {
+	if !c.serverFeatureFlags.HasCronTriggers {
+		c.logger.WithField("metadata_plugin", "cron_triggers").Warnf("Skipping building %s", fileName)
+		return nil
+	}
+	data, err := ioutil.ReadFile(filepath.Join(c.MetadataDir, fileName))
+	if err != nil {
+		return err
+	}
+
+	item := yaml.MapItem{
+		Key:   metadataKey,
+		Value: []yaml.MapSlice{},
+	}
+	err = yaml.Unmarshal(data, &item.Value)
+	if err != nil {
+		return err
+	}
+	*metadata = append(*metadata, item)
+	return nil
+}
+
+func (c *CronTriggers) Export(metadata yaml.MapSlice) (map[string][]byte, error) {
+	if !c.serverFeatureFlags.HasCronTriggers {
+		c.logger.Debugf("Skipping creating %s", fileName)
+		return make(map[string][]byte), nil
+	}
+	var cronTriggers interface{}
+	for _, item := range metadata {
+		k, ok := item.Key.(string)
+		if !ok || k != metadataKey {
+			continue
+		}
+		cronTriggers = item.Value
+	}
+	if cronTriggers == nil {
+		cronTriggers = make([]interface{}, 0)
+	}
+	data, err := yaml.Marshal(cronTriggers)
+	if err != nil {
+		return nil, err
+	}
+	return map[string][]byte{
+		filepath.Join(c.MetadataDir, fileName): data,
+	}, nil
+}
+
+func (c *CronTriggers) Name() string {
+	return metadataKey
+}

cli/migrate/util.go

@@ -9,6 +9,8 @@ import (
 	"strings"
 	"time"
 
+	crontriggers "github.com/hasura/graphql-engine/cli/metadata/cron_triggers"
+
 	"github.com/hasura/graphql-engine/cli/metadata"
 	"github.com/hasura/graphql-engine/cli/metadata/actions"
 	"github.com/hasura/graphql-engine/cli/metadata/allowlist"
@@ -172,6 +174,7 @@ func SetMetadataPluginsWithDir(ec *cli.ExecutionContext, drv *Migrate, dir ...st
 		plugins = append(plugins, allowlist.New(ec, metadataDir))
 		plugins = append(plugins, remoteschemas.New(ec, metadataDir))
 		plugins = append(plugins, actions.New(ec, metadataDir))
+		plugins = append(plugins, crontriggers.New(ec, metadataDir))
 	} else {
 		plugins = append(plugins, metadata.New(ec, ec.MigrationDir))
 	}

cli/version/feature_flags.go

@@ -10,11 +10,13 @@ import (
 type ServerFeatureFlags struct {
 	HasAccessKey bool
 
-	HasAction bool
+	HasAction       bool
+	HasCronTriggers bool
 }
 
 const adminSecretVersion = "v1.0.0-alpha38"
 const actionVersion = "v1.2.0-beta.1"
+const cronTriggersVersion = "v1.3.0-beta.1"
 
 // GetServerFeatureFlags returns the feature flags for server.
 func (v *Version) GetServerFeatureFlags() error {
@@ -38,6 +40,14 @@ func (v *Version) GetServerFeatureFlags() error {
 		}
 		// check the current version with the constraint
 		flags.HasAction = actionConstraint.Check(v.ServerSemver)
+
+		// cronTriggers Constraint
+		cronTriggersConstraint, err := semver.NewConstraint(">= " + cronTriggersVersion)
+		if err != nil {
+			return errors.Wrap(err, "building cron triggers constraint failed")
+		}
+		// check the current version with the constraint
+		flags.HasCronTriggers = cronTriggersConstraint.Check(v.ServerSemver)
 	}
 	v.ServerFeatureFlags = flags
 	return nil

scripts/cli-migrations/v2/test/metadata/cron_triggers.yaml

@@ -0,0 +1 @@
+[]