matching

package
v1.22.4 Latest Latest
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 Go to latest Published: Jan 12, 2024 License: MIT Imports: 69 Imported by: 0

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Constants

This section is empty.

Variables

View Source 
var Module = fx.Options(
	resource.Module,
	fx.Provide(dynamicconfig.NewCollection),
	fx.Provide(ConfigProvider),
	fx.Provide(PersistenceRateLimitingParamsProvider),
	fx.Provide(ThrottledLoggerRpsFnProvider),
	fx.Provide(RetryableInterceptorProvider),
	fx.Provide(TelemetryInterceptorProvider),
	fx.Provide(RateLimitInterceptorProvider),
	fx.Provide(VisibilityManagerProvider),
	fx.Provide(HandlerProvider),
	fx.Provide(service.GrpcServerOptionsProvider),
	fx.Provide(NamespaceReplicationQueueProvider),
	fx.Provide(ServiceResolverProvider),
	fx.Provide(NewService),
	fx.Invoke(ServiceLifetimeHooks),
)

Functions

func ClearTombstones added in v1.21.0 

func ClearTombstones(versioningData *persistencespb.VersioningData) *persistencespb.VersioningData

ClearTombstones clears all tombstone build ids (with STATE_DELETED) from versioning data. Clones data to avoid mutating in place.

func GetBuildIdDeltas added in v1.21.0 

func GetBuildIdDeltas(prev *persistencespb.VersioningData, curr *persistencespb.VersioningData) (added []string, removed []string)

GetBuildIdDeltas compares all active build ids in prev and curr sets and returns sets of added and removed build ids.

func IsTaskExpired added in v1.22.0 

func IsTaskExpired(t *persistencespb.AllocatedTaskInfo) bool

TODO https://github.com/temporalio/temporal/issues/1021 

there should be more validation logic here
1. if task has valid TTL -> TTL reached -> delete
2. if task has 0 TTL / no TTL -> logic need to additionally check if corresponding workflow still exists

func MergeVersioningData added in v1.21.0 

func MergeVersioningData(a *persistencespb.VersioningData, b *persistencespb.VersioningData) *persistencespb.VersioningData

MergeVersioningData merges two VersioningData structs. If a build ID appears in both data structures, the merged structure will include that latest status and timestamp. If a build ID appears in different sets in the different structures, those sets will be merged. The merged data's per set default and global default will be set according to the latest timestamps in the sources. if (a) is nil, (b) is returned as is, otherwise, if (b) is nil (a) is returned as is.

func PersistUnknownBuildId added in v1.22.0 

func PersistUnknownBuildId(clock hlc.Clock, data *persistencespb.VersioningData, buildId string) *persistencespb.VersioningData

func PersistenceRateLimitingParamsProvider added in v1.17.2 

func PersistenceRateLimitingParamsProvider(
	serviceConfig *Config,
) service.PersistenceRateLimitingParams

PersistenceRateLimitingParamsProvider is the same between services but uses different config sources. if-case comes from resourceImpl.New.

func RateLimitInterceptorProvider added in v1.13.0 

func RateLimitInterceptorProvider(
	serviceConfig *Config,
) *interceptor.RateLimitInterceptor

func RemoveBuildIds added in v1.21.0 

func RemoveBuildIds(clock hlc.Clock, versioningData *persistencespb.VersioningData, buildIds []string) *persistencespb.VersioningData

RemoveBuildIds removes given buildIds from versioning data. Assumes that build ids are safe to remove, ex: a set default is never removed unless it is a single set member and that set is not default for the queue.

func RetryableInterceptorProvider added in v1.17.3 

func RetryableInterceptorProvider() *interceptor.RetryableInterceptor

func ServiceLifetimeHooks added in v1.13.0 

func ServiceLifetimeHooks(lc fx.Lifecycle, svc *Service)

func ServiceResolverProvider added in v1.14.0 

func ServiceResolverProvider(membershipMonitor membership.Monitor) (membership.ServiceResolver, error)

func TelemetryInterceptorProvider added in v1.13.0 

func TelemetryInterceptorProvider(
	logger log.Logger,
	namespaceRegistry namespace.Registry,
	metricsHandler metrics.Handler,
) *interceptor.TelemetryInterceptor

func ThrottledLoggerRpsFnProvider added in v1.13.0 

func ThrottledLoggerRpsFnProvider(serviceConfig *Config) resource.ThrottledLoggerRpsFn

func ToBuildIdOrderingResponse added in v1.17.3 

func ToBuildIdOrderingResponse(data *persistencespb.VersioningData, maxSets int) *workflowservice.GetWorkerBuildIdCompatibilityResponse

ToBuildIdOrderingResponse transforms the internal VersioningData representation to public representation. If maxSets is given, the last sets up to maxSets will be returned.

func UpdateVersionSets added in v1.21.0 

func UpdateVersionSets(clock hlc.Clock, data *persistencespb.VersioningData, req *workflowservice.UpdateWorkerBuildIdCompatibilityRequest, maxSets, maxBuildIds int) (*persistencespb.VersioningData, error)

UpdateVersionSets updates version sets given existing versioning data and an update request. The request is expected to have already been validated.

See the API docs for more detail. In short, the versioning data representation consists of a sequence of sequences of compatible versions. Like so: 

                     *
┬─1.0───2.0─┬─3.0───4.0
│           ├─3.1
│           └─3.2
├─1.1
├─1.2
└─1.3

In the above example, 4.0 is the current default version and no other versions are compatible with it. The previous compatible set is the 3.x set, with 3.2 being the current default for that set, and so on. The * represents the current default set pointer, which can be shifted around by the user.

A request may:

  1. Add a new version possibly as the new overall default version, creating a new set.
  2. Add a new version, compatible with some existing version, adding it to that existing set and making it the new default for that set.
  3. Target some existing version, marking it (and thus its set) as the default set.

Deletions are performed by a background process which verifies build IDs are no longer in use and safe to delete (not yet implemented).

Update may fail with FailedPrecondition if it would cause exceeding the supplied limits.

func VisibilityManagerProvider added in v1.21.0 

func VisibilityManagerProvider(
	logger log.Logger,
	persistenceConfig *config.Persistence,
	metricsHandler metrics.Handler,
	serviceConfig *Config,
	esClient esclient.Client,
	persistenceServiceResolver resolver.ServiceResolver,
	searchAttributesMapperProvider searchattribute.MapperProvider,
	saProvider searchattribute.Provider,
) (manager.VisibilityManager, error)

Types

type Config added in v0.3.0 

type Config struct {
	PersistenceMaxQPS                     dynamicconfig.IntPropertyFn
	PersistenceGlobalMaxQPS               dynamicconfig.IntPropertyFn
	PersistenceNamespaceMaxQPS            dynamicconfig.IntPropertyFnWithNamespaceFilter
	PersistencePerShardNamespaceMaxQPS    dynamicconfig.IntPropertyFnWithNamespaceFilter
	EnablePersistencePriorityRateLimiting dynamicconfig.BoolPropertyFn
	PersistenceDynamicRateLimitingParams  dynamicconfig.MapPropertyFn
	SyncMatchWaitDuration                 dynamicconfig.DurationPropertyFnWithTaskQueueInfoFilters
	TestDisableSyncMatch                  dynamicconfig.BoolPropertyFn
	RPS                                   dynamicconfig.IntPropertyFn
	OperatorRPSRatio                      dynamicconfig.FloatPropertyFn
	ShutdownDrainDuration                 dynamicconfig.DurationPropertyFn

	RangeSize                         int64
	GetTasksBatchSize                 dynamicconfig.IntPropertyFnWithTaskQueueInfoFilters
	UpdateAckInterval                 dynamicconfig.DurationPropertyFnWithTaskQueueInfoFilters
	MaxTaskQueueIdleTime              dynamicconfig.DurationPropertyFnWithTaskQueueInfoFilters
	NumTaskqueueWritePartitions       dynamicconfig.IntPropertyFnWithTaskQueueInfoFilters
	NumTaskqueueReadPartitions        dynamicconfig.IntPropertyFnWithTaskQueueInfoFilters
	ForwarderMaxOutstandingPolls      dynamicconfig.IntPropertyFnWithTaskQueueInfoFilters
	ForwarderMaxOutstandingTasks      dynamicconfig.IntPropertyFnWithTaskQueueInfoFilters
	ForwarderMaxRatePerSecond         dynamicconfig.IntPropertyFnWithTaskQueueInfoFilters
	ForwarderMaxChildrenPerNode       dynamicconfig.IntPropertyFnWithTaskQueueInfoFilters
	VersionCompatibleSetLimitPerQueue dynamicconfig.IntPropertyFnWithNamespaceFilter
	VersionBuildIdLimitPerQueue       dynamicconfig.IntPropertyFnWithNamespaceFilter
	TaskQueueLimitPerBuildId          dynamicconfig.IntPropertyFnWithNamespaceFilter
	GetUserDataLongPollTimeout        dynamicconfig.DurationPropertyFn

	// Time to hold a poll request before returning an empty response if there are no tasks
	LongPollExpirationInterval dynamicconfig.DurationPropertyFnWithTaskQueueInfoFilters
	MinTaskThrottlingBurstSize dynamicconfig.IntPropertyFnWithTaskQueueInfoFilters
	MaxTaskDeleteBatchSize     dynamicconfig.IntPropertyFnWithTaskQueueInfoFilters

	// taskWriter configuration
	OutstandingTaskAppendsThreshold dynamicconfig.IntPropertyFnWithTaskQueueInfoFilters
	MaxTaskBatchSize                dynamicconfig.IntPropertyFnWithTaskQueueInfoFilters

	ThrottledLogRPS dynamicconfig.IntPropertyFn

	AdminNamespaceToPartitionDispatchRate          dynamicconfig.FloatPropertyFnWithNamespaceFilter
	AdminNamespaceTaskqueueToPartitionDispatchRate dynamicconfig.FloatPropertyFnWithTaskQueueInfoFilters

	VisibilityPersistenceMaxReadQPS   dynamicconfig.IntPropertyFn
	VisibilityPersistenceMaxWriteQPS  dynamicconfig.IntPropertyFn
	EnableReadFromSecondaryVisibility dynamicconfig.BoolPropertyFnWithNamespaceFilter
	VisibilityDisableOrderByClause    dynamicconfig.BoolPropertyFnWithNamespaceFilter
	VisibilityEnableManualPagination  dynamicconfig.BoolPropertyFnWithNamespaceFilter

	LoadUserData dynamicconfig.BoolPropertyFnWithTaskQueueInfoFilters
}

Config represents configuration for matching service

func ConfigProvider added in v1.21.0 

func ConfigProvider(
	dc *dynamicconfig.Collection,
	persistenceConfig config.Persistence,
) *Config

func NewConfig added in v0.3.0 

func NewConfig(
	dc *dynamicconfig.Collection,
	visibilityStoreConfigExist bool,
	enableReadFromES bool,
) *Config

NewConfig returns new service config with default values

type Engine 

type Engine interface {
	Start()
	Stop()
	AddWorkflowTask(ctx context.Context, addRequest *matchingservice.AddWorkflowTaskRequest) (syncMatch bool, err error)
	AddActivityTask(ctx context.Context, addRequest *matchingservice.AddActivityTaskRequest) (syncMatch bool, err error)
	PollWorkflowTaskQueue(ctx context.Context, request *matchingservice.PollWorkflowTaskQueueRequest, opMetrics metrics.Handler) (*matchingservice.PollWorkflowTaskQueueResponse, error)
	PollActivityTaskQueue(ctx context.Context, request *matchingservice.PollActivityTaskQueueRequest, opMetrics metrics.Handler) (*matchingservice.PollActivityTaskQueueResponse, error)
	QueryWorkflow(ctx context.Context, request *matchingservice.QueryWorkflowRequest) (*matchingservice.QueryWorkflowResponse, error)
	RespondQueryTaskCompleted(ctx context.Context, request *matchingservice.RespondQueryTaskCompletedRequest, opMetrics metrics.Handler) error
	CancelOutstandingPoll(ctx context.Context, request *matchingservice.CancelOutstandingPollRequest) error
	DescribeTaskQueue(ctx context.Context, request *matchingservice.DescribeTaskQueueRequest) (*matchingservice.DescribeTaskQueueResponse, error)
	ListTaskQueuePartitions(ctx context.Context, request *matchingservice.ListTaskQueuePartitionsRequest) (*matchingservice.ListTaskQueuePartitionsResponse, error)
	UpdateWorkerBuildIdCompatibility(ctx context.Context, request *matchingservice.UpdateWorkerBuildIdCompatibilityRequest) (*matchingservice.UpdateWorkerBuildIdCompatibilityResponse, error)
	GetWorkerBuildIdCompatibility(ctx context.Context, request *matchingservice.GetWorkerBuildIdCompatibilityRequest) (*matchingservice.GetWorkerBuildIdCompatibilityResponse, error)
	GetTaskQueueUserData(ctx context.Context, request *matchingservice.GetTaskQueueUserDataRequest) (*matchingservice.GetTaskQueueUserDataResponse, error)
	ApplyTaskQueueUserDataReplicationEvent(ctx context.Context, request *matchingservice.ApplyTaskQueueUserDataReplicationEventRequest) (*matchingservice.ApplyTaskQueueUserDataReplicationEventResponse, error)
	GetBuildIdTaskQueueMapping(ctx context.Context, request *matchingservice.GetBuildIdTaskQueueMappingRequest) (*matchingservice.GetBuildIdTaskQueueMappingResponse, error)
	ForceUnloadTaskQueue(ctx context.Context, request *matchingservice.ForceUnloadTaskQueueRequest) (*matchingservice.ForceUnloadTaskQueueResponse, error)
	UpdateTaskQueueUserData(ctx context.Context, request *matchingservice.UpdateTaskQueueUserDataRequest) (*matchingservice.UpdateTaskQueueUserDataResponse, error)
	ReplicateTaskQueueUserData(ctx context.Context, request *matchingservice.ReplicateTaskQueueUserDataRequest) (*matchingservice.ReplicateTaskQueueUserDataResponse, error)
}

Engine exposes interfaces for clients to interact with the matching engine

func NewEngine 

func NewEngine(
	taskManager persistence.TaskManager,
	historyClient resource.HistoryClient,
	matchingRawClient resource.MatchingRawClient,
	config *Config,
	logger log.Logger,
	throttledLogger log.ThrottledLogger,
	metricsHandler metrics.Handler,
	namespaceRegistry namespace.Registry,
	resolver membership.ServiceResolver,
	clusterMeta cluster.Metadata,
	namespaceReplicationQueue persistence.NamespaceReplicationQueue,
	visibilityManager manager.VisibilityManager,
) Engine

NewEngine creates an instance of matching engine

type Forwarder added in v0.7.0 

type Forwarder struct {
	// contains filtered or unexported fields
}

Forwarder is the type that contains state pertaining to the api call forwarder component

func (*Forwarder) AddReqTokenC added in v0.7.0 

func (fwdr *Forwarder) AddReqTokenC() <-chan *ForwarderReqToken

AddReqTokenC returns a channel that can be used to wait for a token that's necessary before making a ForwardTask or ForwardQueryTask API call. After the API call is invoked, token.release() must be invoked

func (*Forwarder) ForwardPoll added in v0.7.0 

func (fwdr *Forwarder) ForwardPoll(ctx context.Context, pollMetadata *pollMetadata) (*internalTask, error)

ForwardPoll forwards a poll request to parent task queue partition if it exist

func (*Forwarder) ForwardQueryTask added in v0.7.0 

func (fwdr *Forwarder) ForwardQueryTask(
	ctx context.Context,
	task *internalTask,
) (*matchingservice.QueryWorkflowResponse, error)

ForwardQueryTask forwards a query task to parent task queue partition, if it exists

func (*Forwarder) ForwardTask added in v0.7.0 

func (fwdr *Forwarder) ForwardTask(ctx context.Context, task *internalTask) error

ForwardTask forwards an activity or workflow task to the parent task queue partition if it exists

func (*Forwarder) PollReqTokenC added in v0.7.0 

func (fwdr *Forwarder) PollReqTokenC() <-chan *ForwarderReqToken

PollReqTokenC returns a channel that can be used to wait for a token that's necessary before making a ForwardPoll API call. After the API call is invoked, token.release() must be invoked

type ForwarderReqToken added in v0.7.0 

type ForwarderReqToken struct {
	// contains filtered or unexported fields
}

ForwarderReqToken is the token that must be acquired before making forwarder API calls. This type contains the state for the token itself

type Handler 

type Handler struct {
	// contains filtered or unexported fields
}

Handler - gRPC handler interface for matchingservice

func HandlerProvider added in v1.14.0 

func HandlerProvider(
	config *Config,
	logger log.SnTaggedLogger,
	throttledLogger log.ThrottledLogger,
	taskManager persistence.TaskManager,
	historyClient resource.HistoryClient,
	matchingRawClient resource.MatchingRawClient,
	matchingServiceResolver membership.ServiceResolver,
	metricsHandler metrics.Handler,
	namespaceRegistry namespace.Registry,
	clusterMetadata cluster.Metadata,
	namespaceReplicationQueue TaskQueueReplicatorNamespaceReplicationQueue,
	visibilityManager manager.VisibilityManager,
) *Handler

func NewHandler 

func NewHandler(
	config *Config,
	logger log.Logger,
	throttledLogger log.Logger,
	taskManager persistence.TaskManager,
	historyClient resource.HistoryClient,
	matchingRawClient resource.MatchingRawClient,
	matchingServiceResolver membership.ServiceResolver,
	metricsHandler metrics.Handler,
	namespaceRegistry namespace.Registry,
	clusterMetadata cluster.Metadata,
	namespaceReplicationQueue persistence.NamespaceReplicationQueue,
	visibilityManager manager.VisibilityManager,
) *Handler

NewHandler creates a gRPC handler for the matchingservice

func (*Handler) AddActivityTask 

func (h *Handler) AddActivityTask(
	ctx context.Context,
	request *matchingservice.AddActivityTaskRequest,
) (_ *matchingservice.AddActivityTaskResponse, retError error)

AddActivityTask - adds an activity task.

func (*Handler) AddWorkflowTask added in v0.27.0 

func (h *Handler) AddWorkflowTask(
	ctx context.Context,
	request *matchingservice.AddWorkflowTaskRequest,
) (_ *matchingservice.AddWorkflowTaskResponse, retError error)

AddWorkflowTask - adds a workflow task.

func (*Handler) ApplyTaskQueueUserDataReplicationEvent added in v1.21.0 

func (h *Handler) ApplyTaskQueueUserDataReplicationEvent(
	ctx context.Context,
	request *matchingservice.ApplyTaskQueueUserDataReplicationEventRequest,
) (_ *matchingservice.ApplyTaskQueueUserDataReplicationEventResponse, retError error)

func (*Handler) CancelOutstandingPoll added in v0.3.2 

func (h *Handler) CancelOutstandingPoll(ctx context.Context,
	request *matchingservice.CancelOutstandingPollRequest) (_ *matchingservice.CancelOutstandingPollResponse, retError error)

CancelOutstandingPoll is used to cancel outstanding pollers

func (*Handler) DescribeTaskQueue added in v0.27.0 

func (h *Handler) DescribeTaskQueue(
	ctx context.Context,
	request *matchingservice.DescribeTaskQueueRequest,
) (_ *matchingservice.DescribeTaskQueueResponse, retError error)

DescribeTaskQueue returns information about the target task queue, right now this API returns the pollers which polled this task queue in last few minutes. If includeTaskQueueStatus field is true, it will also return status of task queue's ackManager (readLevel, ackLevel, backlogCountHint and taskIDBlock).

func (*Handler) ForceUnloadTaskQueue added in v1.21.0 

func (h *Handler) ForceUnloadTaskQueue(
	ctx context.Context,
	request *matchingservice.ForceUnloadTaskQueueRequest,
) (_ *matchingservice.ForceUnloadTaskQueueResponse, retError error)

func (*Handler) GetBuildIdTaskQueueMapping added in v1.21.0 

func (h *Handler) GetBuildIdTaskQueueMapping(
	ctx context.Context,
	request *matchingservice.GetBuildIdTaskQueueMappingRequest,
) (_ *matchingservice.GetBuildIdTaskQueueMappingResponse, retError error)

func (*Handler) GetTaskQueueUserData added in v1.21.0 

func (h *Handler) GetTaskQueueUserData(
	ctx context.Context,
	request *matchingservice.GetTaskQueueUserDataRequest,
) (_ *matchingservice.GetTaskQueueUserDataResponse, retError error)

func (*Handler) GetWorkerBuildIdCompatibility added in v1.21.0 

func (h *Handler) GetWorkerBuildIdCompatibility(
	ctx context.Context,
	request *matchingservice.GetWorkerBuildIdCompatibilityRequest,
) (_ *matchingservice.GetWorkerBuildIdCompatibilityResponse, retError error)

GetWorkerBuildIdCompatibility fetches the worker versioning data for a task queue

func (*Handler) ListTaskQueuePartitions added in v0.27.0 

func (h *Handler) ListTaskQueuePartitions(
	ctx context.Context,
	request *matchingservice.ListTaskQueuePartitionsRequest,
) (_ *matchingservice.ListTaskQueuePartitionsResponse, retError error)

ListTaskQueuePartitions returns information about partitions for a taskQueue

func (*Handler) PollActivityTaskQueue added in v0.27.0 

func (h *Handler) PollActivityTaskQueue(
	ctx context.Context,
	request *matchingservice.PollActivityTaskQueueRequest,
) (_ *matchingservice.PollActivityTaskQueueResponse, retError error)

PollActivityTaskQueue - long poll for an activity task.

func (*Handler) PollWorkflowTaskQueue added in v0.27.0 

func (h *Handler) PollWorkflowTaskQueue(
	ctx context.Context,
	request *matchingservice.PollWorkflowTaskQueueRequest,
) (_ *matchingservice.PollWorkflowTaskQueueResponse, retError error)

PollWorkflowTaskQueue - long poll for a workflow task.

func (*Handler) QueryWorkflow added in v0.3.2 

func (h *Handler) QueryWorkflow(
	ctx context.Context,
	request *matchingservice.QueryWorkflowRequest,
) (_ *matchingservice.QueryWorkflowResponse, retError error)

QueryWorkflow queries a given workflow synchronously and return the query result.

func (*Handler) ReplicateTaskQueueUserData added in v1.21.0 

func (h *Handler) ReplicateTaskQueueUserData(
	ctx context.Context,
	request *matchingservice.ReplicateTaskQueueUserDataRequest,
) (_ *matchingservice.ReplicateTaskQueueUserDataResponse, retError error)

func (*Handler) RespondQueryTaskCompleted added in v0.3.2 

func (h *Handler) RespondQueryTaskCompleted(
	ctx context.Context,
	request *matchingservice.RespondQueryTaskCompletedRequest,
) (_ *matchingservice.RespondQueryTaskCompletedResponse, retError error)

RespondQueryTaskCompleted responds a query task completed

func (*Handler) Start 

func (h *Handler) Start()

Start starts the handler

func (*Handler) Stop 

func (h *Handler) Stop()

Stop stops the handler

func (*Handler) UpdateTaskQueueUserData added in v1.21.0 

func (h *Handler) UpdateTaskQueueUserData(
	ctx context.Context,
	request *matchingservice.UpdateTaskQueueUserDataRequest,
) (_ *matchingservice.UpdateTaskQueueUserDataResponse, retError error)

func (*Handler) UpdateWorkerBuildIdCompatibility added in v1.21.0 

func (h *Handler) UpdateWorkerBuildIdCompatibility(
	ctx context.Context,
	request *matchingservice.UpdateWorkerBuildIdCompatibilityRequest,
) (_ *matchingservice.UpdateWorkerBuildIdCompatibilityResponse, retError error)

UpdateWorkerBuildIdCompatibility allows changing the worker versioning graph for a task queue

type Service 

type Service struct {
	// contains filtered or unexported fields
}

Service represents the matching service

func NewService 

func NewService(
	grpcServerOptions []grpc.ServerOption,
	serviceConfig *Config,
	logger log.SnTaggedLogger,
	membershipMonitor membership.Monitor,
	grpcListener net.Listener,
	runtimeMetricsReporter *metrics.RuntimeMetricsReporter,
	handler *Handler,
	metricsHandler metrics.Handler,
	faultInjectionDataStoreFactory *client.FaultInjectionDataStoreFactory,
	healthServer *health.Server,
	visibilityManager manager.VisibilityManager,
) *Service

func (*Service) GetFaultInjection added in v1.14.0 

func (s *Service) GetFaultInjection() *client.FaultInjectionDataStoreFactory

func (*Service) Start 

func (s *Service) Start()

Start starts the service

func (*Service) Stop 

func (s *Service) Stop()

Stop stops the service

type TaskMatcher added in v0.6.0 

type TaskMatcher struct {
	// contains filtered or unexported fields
}

TaskMatcher matches a task producer with a task consumer Producers are usually rpc calls from history or taskReader that drains backlog from db. Consumers are the task queue pollers

func (*TaskMatcher) MustOffer added in v0.6.0 

func (tm *TaskMatcher) MustOffer(ctx context.Context, task *internalTask, interruptCh chan struct{}) error

MustOffer blocks until a consumer is found to handle this task Returns error only when context is canceled or the ratelimit is set to zero (allow nothing) The passed in context MUST NOT have a deadline associated with it

func (*TaskMatcher) Offer added in v0.6.0 

func (tm *TaskMatcher) Offer(ctx context.Context, task *internalTask) (bool, error)

Offer offers a task to a potential consumer (poller) If the task is successfully matched with a consumer, this method will return true and no error. If the task is matched but consumer returned error, then this method will return true and error message. This method should not be used for query task. This method should ONLY be used for sync match.

When a local poller is not available and forwarding to a parent task queue partition is possible, this method will attempt forwarding to the parent partition.

Cases when this method will block:

Ratelimit: When a ratelimit token is not available, this method might block waiting for a token until the provided context timeout. Rate limits are not enforced for forwarded tasks from child partition.

Forwarded tasks that originated from db backlog: When this method is called with a task that is forwarded from a remote partition and if (1) this task queue is root (2) task was from db backlog - this method will block until context timeout trying to match with a poller. The caller is expected to set the correct context timeout.

returns error when:

  • ratelimit is exceeded (does not apply to query task)
  • context deadline is exceeded
  • task is matched and consumer returns error in response channel

func (*TaskMatcher) OfferQuery added in v0.7.0 

func (tm *TaskMatcher) OfferQuery(ctx context.Context, task *internalTask) (*matchingservice.QueryWorkflowResponse, error)

OfferQuery will either match task to local poller or will forward query task. Local match is always attempted before forwarding is attempted. If local match occurs response and error are both nil, if forwarding occurs then response or error is returned.

func (*TaskMatcher) Poll added in v0.6.0 

func (tm *TaskMatcher) Poll(ctx context.Context, pollMetadata *pollMetadata) (*internalTask, error)

Poll blocks until a task is found or context deadline is exceeded On success, the returned task could be a query task or a regular task Returns errNoTasks when context deadline is exceeded

func (*TaskMatcher) PollForQuery added in v0.6.0 

func (tm *TaskMatcher) PollForQuery(ctx context.Context, pollMetadata *pollMetadata) (*internalTask, error)

PollForQuery blocks until a *query* task is found or context deadline is exceeded Returns errNoTasks when context deadline is exceeded

func (*TaskMatcher) Rate added in v0.6.0 

func (tm *TaskMatcher) Rate() float64

Rate returns the current rate at which tasks are dispatched

func (*TaskMatcher) UpdateRatelimit added in v0.6.0 

func (tm *TaskMatcher) UpdateRatelimit(rps *float64)

UpdateRatelimit updates the task dispatch rate

type TaskQueueReplicatorNamespaceReplicationQueue added in v1.21.0 

type TaskQueueReplicatorNamespaceReplicationQueue persistence.NamespaceReplicationQueue

TaskQueueReplicatorNamespaceReplicationQueue is used to ensure the replicator only gets set if global namespaces are enabled on this cluster. See NamespaceReplicationQueueProvider below.

func NamespaceReplicationQueueProvider added in v1.21.0 

func NamespaceReplicationQueueProvider(
	namespaceReplicationQueue persistence.NamespaceReplicationQueue,
	clusterMetadata cluster.Metadata,
) TaskQueueReplicatorNamespaceReplicationQueue

type UserDataUpdateFunc added in v1.21.0 

type UserDataUpdateFunc func(*persistencespb.TaskQueueUserData) (*persistencespb.TaskQueueUserData, bool, error)

UserDataUpdateFunc accepts the current user data for a task queue and returns the updated user data, a boolean indicating whether this data should be replicated, and an error. Extra care should be taken to avoid mutating the current user data to avoid keeping uncommitted data in memory.

type UserDataUpdateOptions added in v1.21.0 

type UserDataUpdateOptions struct {
	TaskQueueLimitPerBuildId int
	// Only perform the update if current version equals to supplied version.
	// 0 is unset.
	KnownVersion int64
}

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