config: add warning, when users set configuration to mydumper/loader/syncer b…

_utils/terror_gen/errors_release.txt

@@ -165,6 +165,7 @@ ErrConfigMoreThanOne,[code=20034:class=config:scope=internal:level=high], "Messa
 ErrConfigEtcdParse,[code=20035:class=config:scope=internal:level=high], "Message: incapable config of %s from etcd"
 ErrConfigMissingForBound,[code=20036:class=config:scope=internal:level=high], "Message: source bound %s doesn't have related source config in etcd"
 ErrConfigBinlogEventFilter,[code=20037:class=config:scope=internal:level=high], "Message: generate binlog event filter, Workaround: Please check the `filters` config in source and task configuration files."
+ErrConfigGlobalConfigsUnused,[code=20038:class=config:scope=internal:level=high], "Message: The configurations as following %v are set in gobal configuration but instances don't use them, Workaround: Please check the configuration files."
 ErrBinlogExtractPosition,[code=22001:class=binlog-op:scope=internal:level=high]
 ErrBinlogInvalidFilename,[code=22002:class=binlog-op:scope=internal:level=high], "Message: invalid binlog filename"
 ErrBinlogParsePosFromStr,[code=22003:class=binlog-op:scope=internal:level=high]

dm/config/task.go

@@ -418,6 +418,8 @@ func (c *TaskConfig) adjust() error {
 	}
 
 	iids := make(map[string]int) // source-id -> instance-index
+	globalConfigReferCount := map[string]int{}
+	prefixs := []string{"RouteRules", "FilterRules", "ColumnMappingRules", "Mydumper", "Loader", "Syncer"}
 	duplicateErrorStrings := make([]string, 0)
 	for i, inst := range c.MySQLInstances {
 		if err := inst.VerifyAndAdjust(); err != nil {
@@ -447,16 +449,19 @@ func (c *TaskConfig) adjust() error {
 			if _, ok := c.Routes[name]; !ok {
 				return terror.ErrConfigRouteRuleNotFound.Generate(i, name)
 			}
+			globalConfigReferCount[prefixs[0]+name]++
 		}
 		for _, name := range inst.FilterRules {
 			if _, ok := c.Filters[name]; !ok {
 				return terror.ErrConfigFilterRuleNotFound.Generate(i, name)
 			}
+			globalConfigReferCount[prefixs[1]+name]++
 		}
 		for _, name := range inst.ColumnMappingRules {
 			if _, ok := c.ColumnMappings[name]; !ok {
 				return terror.ErrConfigColumnMappingNotFound.Generate(i, name)
 			}
+			globalConfigReferCount[prefixs[2]+name]++
 		}
 
 		// only when BAList is empty use BWList
@@ -472,10 +477,14 @@ func (c *TaskConfig) adjust() error {
 			if !ok {
 				return terror.ErrConfigMydumperCfgNotFound.Generate(i, inst.MydumperConfigName)
 			}
+			globalConfigReferCount[prefixs[3]+inst.MydumperConfigName]++
 			inst.Mydumper = new(MydumperConfig)
 			*inst.Mydumper = *rule // ref mydumper config
 		}
 		if inst.Mydumper == nil {
+			if len(c.Mydumpers) != 0 {
+				log.L().Warn("mysql instance don't refer mydumper's configuration with mydumper-config-name, the default configuration will be used", zap.Int("mysql instance", i))
+			}
 			defaultCfg := defaultMydumperConfig()
 			inst.Mydumper = &defaultCfg
 		} else if inst.Mydumper.ChunkFilesize == "" {
@@ -496,10 +505,14 @@ func (c *TaskConfig) adjust() error {
 			if !ok {
 				return terror.ErrConfigLoaderCfgNotFound.Generate(i, inst.LoaderConfigName)
 			}
+			globalConfigReferCount[prefixs[4]+inst.LoaderConfigName]++
 			inst.Loader = new(LoaderConfig)
 			*inst.Loader = *rule // ref loader config
 		}
 		if inst.Loader == nil {
+			if len(c.Loaders) != 0 {
+				log.L().Warn("mysql instance don't refer loader's configuration with loader-config-name, the default configuration will be used", zap.Int("mysql instance", i))
+			}
 			defaultCfg := defaultLoaderConfig()
 			inst.Loader = &defaultCfg
 		}
@@ -512,10 +525,14 @@ func (c *TaskConfig) adjust() error {
 			if !ok {
 				return terror.ErrConfigSyncerCfgNotFound.Generate(i, inst.SyncerConfigName)
 			}
+			globalConfigReferCount[prefixs[5]+inst.SyncerConfigName]++
 			inst.Syncer = new(SyncerConfig)
 			*inst.Syncer = *rule // ref syncer config
 		}
 		if inst.Syncer == nil {
+			if len(c.Syncers) != 0 {
+				log.L().Warn("mysql instance don't refer syncer's configuration with syncer-config-name, the default configuration will be used", zap.Int("mysql instance", i))
+			}
 			defaultCfg := defaultSyncerConfig()
 			inst.Syncer = &defaultCfg
 		}
@@ -539,6 +556,42 @@ func (c *TaskConfig) adjust() error {
 		return terror.ErrConfigDuplicateCfgItem.Generate(strings.Join(duplicateErrorStrings, "\n"))
 	}
 
+	unusedConfigs := []string{}
+	for route := range c.Routes {
+		if globalConfigReferCount[prefixs[0]+route] == 0 {
+			unusedConfigs = append(unusedConfigs, route)
+		}
+	}
+	for filter := range c.Filters {
+		if globalConfigReferCount[prefixs[1]+filter] == 0 {
+			unusedConfigs = append(unusedConfigs, filter)
+		}
+	}
+	for columnMapping := range c.ColumnMappings {
+		if globalConfigReferCount[prefixs[2]+columnMapping] == 0 {
+			unusedConfigs = append(unusedConfigs, columnMapping)
+		}
+	}
+	for mydumper := range c.Mydumpers {
+		if globalConfigReferCount[prefixs[3]+mydumper] == 0 {
+			unusedConfigs = append(unusedConfigs, mydumper)
+		}
+	}
+	for loader := range c.Loaders {
+		if globalConfigReferCount[prefixs[4]+loader] == 0 {
+			unusedConfigs = append(unusedConfigs, loader)
+		}
+	}
+	for syncer := range c.Syncers {
+		if globalConfigReferCount[prefixs[5]+syncer] == 0 {
+			unusedConfigs = append(unusedConfigs, syncer)
+		}
+	}
+
+	if len(unusedConfigs) != 0 {
+		return terror.ErrConfigGlobalConfigsUnused.Generate(unusedConfigs)
+	}
+
 	if c.Timezone != "" {
 		_, err := time.LoadLocation(c.Timezone)
 		if err != nil {

dm/config/task_test.go

@@ -28,6 +28,215 @@ import (
 	"github.com/coreos/go-semver/semver"
 )
 
+func (t *testConfig) TestUnusedTaskConfig(c *C) {
+	var correctTaskConfig = `---
+name: test
+task-mode: all
+shard-mode: "pessimistic"       
+meta-schema: "dm_meta"         
+timezone: "Asia/Shanghai"     
+case-sensitive: false        
+online-ddl-scheme: "gh-ost" 
+clean-dump-file: true     
+
+target-database:
+  host: "127.0.0.1"
+  port: 4000
+  user: "root"
+  password: ""
+
+routes:
+  route-rule-1:
+    schema-pattern: "test_*"
+    target-schema: "test"
+  route-rule-2:
+    schema-pattern: "test_*"
+    target-schema: "test"
+
+filters: 
+  filter-rule-1:
+    schema-pattern: "test_*"
+    events: ["truncate table", "drop table"]
+    action: Ignore
+  filter-rule-2:
+    schema-pattern: "test_*"
+    events: ["all dml"]
+    action: Do
+
+column-mappings:
+  column-mapping-rule-1:
+    schema-pattern: "test_*"
+    table-pattern: "t_*"
+    expression: "partition id"
+    source-column: "id"
+    target-column: "id"
+    arguments: ["1", "test", "t", "_"]
+  column-mapping-rule-2:
+    schema-pattern: "test_*"
+    table-pattern: "t_*"
+    expression: "partition id"
+    source-column: "id"
+    target-column: "id"
+    arguments: ["2", "test", "t", "_"]
+
+mydumpers:
+  global1:
+    threads: 4
+    chunk-filesize: 64
+    skip-tz-utc: true
+    extra-args: "--consistency none"
+  global2:
+    threads: 8
+    chunk-filesize: 128
+    skip-tz-utc: true
+    extra-args: "--consistency none"
+
+loaders:
+  global1:
+    pool-size: 16
+    dir: "./dumped_data1"
+  global2:
+    pool-size: 8
+    dir: "./dumped_data2"
+
+syncers:
+  global1:
+    worker-count: 16
+    batch: 100 
+    enable-ansi-quotes: true
+    safe-mode: false  
+  global2:
+    worker-count: 32
+    batch: 100 
+    enable-ansi-quotes: true
+    safe-mode: false  
+
+mysql-instances:
+  - source-id: "mysql-replica-01"
+    route-rules: ["route-rule-2"]
+    filter-rules: ["filter-rule-2"]
+    column-mapping-rules: ["column-mapping-rule-2"]
+    mydumper-config-name: "global1"
+    loader-config-name: "global1"
+    syncer-config-name: "global1"
+
+  - source-id: "mysql-replica-02"
+    route-rules: ["route-rule-1"]
+    filter-rules: ["filter-rule-1"]
+    column-mapping-rules: ["column-mapping-rule-1"]
+    mydumper-config-name: "global2"
+    loader-config-name: "global2"
+    syncer-config-name: "global2"
+`
+	taskConfig := NewTaskConfig()
+	err := taskConfig.Decode(correctTaskConfig)
+	c.Assert(err, IsNil)
+	var errorTaskConfig = `---
+name: test
+task-mode: all
+shard-mode: "pessimistic"       
+meta-schema: "dm_meta"         
+timezone: "Asia/Shanghai"     
+case-sensitive: false        
+online-ddl-scheme: "gh-ost" 
+clean-dump-file: true     
+
+target-database:
+  host: "127.0.0.1"
+  port: 4000
+  user: "root"
+  password: ""
+
+routes:
+  route-rule-1:
+    schema-pattern: "test_*"
+    target-schema: "test"
+  route-rule-2:
+    schema-pattern: "test_*"
+    target-schema: "test"
+
+filters: 
+  filter-rule-1:
+    schema-pattern: "test_*"
+    table-pattern: "t_*"
+    events: ["truncate table", "drop table"]
+    action: Ignore
+  filter-rule-2:
+    schema-pattern: "test_*"
+    events: ["all dml"]
+    action: Do
+
+column-mappings:
+  column-mapping-rule-1:
+    schema-pattern: "test_*"
+    table-pattern: "t_*"
+    expression: "partition id"
+    source-column: "id"
+    target-column: "id"
+    arguments: ["1", "test", "t", "_"]
+  column-mapping-rule-2:
+    schema-pattern: "test_*"
+    table-pattern: "t_*"
+    expression: "partition id"
+    source-column: "id"
+    target-column: "id"
+    arguments: ["2", "test", "t", "_"]
+
+mydumpers:
+  global1:
+    threads: 4
+    chunk-filesize: 64
+    skip-tz-utc: true
+    extra-args: "--consistency none"
+  global2:
+    threads: 8
+    chunk-filesize: 128
+    skip-tz-utc: true
+    extra-args: "--consistency none"
+
+loaders:
+  global1:
+    pool-size: 16
+    dir: "./dumped_data1"
+  global2:
+    pool-size: 8
+    dir: "./dumped_data2"
+
+syncers:
+  global1:
+    worker-count: 16
+    batch: 100 
+    enable-ansi-quotes: true
+    safe-mode: false  
+  global2:
+    worker-count: 32
+    batch: 100 
+    enable-ansi-quotes: true
+    safe-mode: false  
+
+mysql-instances:
+  - source-id: "mysql-replica-01"
+    route-rules: ["route-rule-1"]
+    filter-rules: ["filter-rule-1"]
+    column-mapping-rules: ["column-mapping-rule-1"]
+    mydumper-config-name: "global1"
+    loader-config-name: "global1"
+    syncer-config-name: "global1"
+
+  - source-id: "mysql-replica-02"
+    route-rules: ["route-rule-1"]
+    filter-rules: ["filter-rule-1"]
+    column-mapping-rules: ["column-mapping-rule-1"]
+    mydumper-config-name: "global2"
+    loader-config-name: "global2"
+    syncer-config-name: "global2"
+`
+	taskConfig = NewTaskConfig()
+	err = taskConfig.Decode(errorTaskConfig)
+	c.Check(err, NotNil)
+	c.Assert(err, ErrorMatches, "*The configurations as following [route-rule-2 filter-rule-2 column-mapping-rule-2] are set in gobal configuration but*")
+}
+
 func (t *testConfig) TestInvalidTaskConfig(c *C) {
 	var errorTaskConfig1 = `---
 name: test

errors.toml

@@ -1000,6 +1000,12 @@ description = ""
 workaround = "Please check the `filters` config in source and task configuration files."
 tags = ["internal", "high"]
 
+[error.DM-config-20038]
+message = "The configurations as following %v are set in gobal configuration but instances don't use them"
+description = ""
+workaround = "Please check the configuration files."
+tags = ["internal", "high"]
+
 [error.DM-binlog-op-22001]
 message = ""
 description = ""

pkg/terror/error_list.go

@@ -226,6 +226,7 @@ const (
 	codeConfigEtcdParse
 	codeConfigMissingForBound
 	codeConfigBinlogEventFilter
+	codeConfigGlobalConfigsUnused
 )
 
 // Binlog operation error code list
@@ -823,6 +824,7 @@ var (
 	ErrConfigEtcdParse              = New(codeConfigEtcdParse, ClassConfig, ScopeInternal, LevelHigh, "incapable config of %s from etcd", "")
 	ErrConfigMissingForBound        = New(codeConfigMissingForBound, ClassConfig, ScopeInternal, LevelHigh, "source bound %s doesn't have related source config in etcd", "")
 	ErrConfigBinlogEventFilter      = New(codeConfigBinlogEventFilter, ClassConfig, ScopeInternal, LevelHigh, "generate binlog event filter", "Please check the `filters` config in source and task configuration files.")
+	ErrConfigGlobalConfigsUnused    = New(codeConfigGlobalConfigsUnused, ClassConfig, ScopeInternal, LevelHigh, "The configurations as following %v are set in gobal configuration but instances don't use them", "Please check the configuration files.")
 
 	// Binlog operation error
 	ErrBinlogExtractPosition = New(codeBinlogExtractPosition, ClassBinlogOp, ScopeInternal, LevelHigh, "", "")