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admin_eventsink.go
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/
admin_eventsink.go
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package events
import (
"context"
"fmt"
"time"
"github.com/golang/protobuf/proto"
grpcRetry "github.com/grpc-ecosystem/go-grpc-middleware/retry"
"go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc"
"go.opentelemetry.io/otel/propagation"
"golang.org/x/time/rate"
"google.golang.org/grpc"
admin2 "github.com/flyteorg/flyte/flyteidl/clients/go/admin"
"github.com/flyteorg/flyte/flyteidl/gen/pb-go/flyteidl/admin"
"github.com/flyteorg/flyte/flyteidl/gen/pb-go/flyteidl/event"
"github.com/flyteorg/flyte/flyteidl/gen/pb-go/flyteidl/service"
"github.com/flyteorg/flyte/flytepropeller/events/errors"
"github.com/flyteorg/flyte/flytestdlib/fastcheck"
"github.com/flyteorg/flyte/flytestdlib/logger"
"github.com/flyteorg/flyte/flytestdlib/otelutils"
"github.com/flyteorg/flyte/flytestdlib/promutils"
)
type adminEventSink struct {
adminClient service.AdminServiceClient
filter fastcheck.Filter
rateLimiter *rate.Limiter
cfg *Config
}
// Constructs a new EventSink that sends events to FlyteAdmin through gRPC
func NewAdminEventSink(ctx context.Context, adminClient service.AdminServiceClient, config *Config, filter fastcheck.Filter) (EventSink, error) {
rateLimiter := rate.NewLimiter(rate.Limit(config.Rate), config.Capacity)
eventSink := &adminEventSink{
adminClient: adminClient,
filter: filter,
rateLimiter: rateLimiter,
cfg: config,
}
logger.Infof(ctx, "Created new AdminEventSink to Admin service")
return eventSink, nil
}
// Sends events to the FlyteAdmin service through gRPC
func (s *adminEventSink) Sink(ctx context.Context, message proto.Message) error {
logger.Debugf(ctx, "AdminEventSink received a new event %s", message.String())
// Short-circuit if event has already been sent
id, err := IDFromMessage(message)
if err != nil {
return fmt.Errorf("Failed to parse message id [%v]", message.String())
}
if s.filter.Contains(ctx, id) {
logger.Debugf(ctx, "event '%s' has already been sent", string(id))
return nil
}
// Validate submission with rate limiter and send admin event
if s.rateLimiter.Allow() {
switch eventMessage := message.(type) {
case *event.WorkflowExecutionEvent:
request := &admin.WorkflowExecutionEventRequest{
Event: eventMessage,
}
_, err := s.adminClient.CreateWorkflowEvent(ctx, request)
if err != nil {
return errors.WrapError(err)
}
case *event.NodeExecutionEvent:
request := &admin.NodeExecutionEventRequest{
Event: eventMessage,
}
_, err := s.adminClient.CreateNodeEvent(ctx, request)
if err != nil {
return errors.WrapError(err)
}
case *event.TaskExecutionEvent:
request := &admin.TaskExecutionEventRequest{
Event: eventMessage,
}
_, err := s.adminClient.CreateTaskEvent(ctx, request)
if err != nil {
return errors.WrapError(err)
}
default:
return fmt.Errorf("unknown event type [%s]", eventMessage.String())
}
} else {
return &errors.EventError{Code: errors.ResourceExhausted,
Cause: fmt.Errorf("Admin EventSink throttling admin traffic"), Message: "Resource Exhausted"}
}
s.filter.Add(ctx, id)
return nil
}
// Closes the gRPC client connection. This should be deferred on the client does shutdown cleanup.
func (s *adminEventSink) Close() error {
return nil
}
// Generates an ID which uniquely represents the admin event entity and associated phase.
func IDFromMessage(message proto.Message) ([]byte, error) {
var id string
switch eventMessage := message.(type) {
case *event.WorkflowExecutionEvent:
wid := eventMessage.ExecutionId
id = fmt.Sprintf("%s:%s:%s:%d", wid.Project, wid.Domain, wid.Name, eventMessage.Phase)
case *event.NodeExecutionEvent:
nid := eventMessage.Id
wid := nid.ExecutionId
id = fmt.Sprintf("%s:%s:%s:%s:%s:%d", wid.Project, wid.Domain, wid.Name, nid.NodeId, eventMessage.RetryGroup, eventMessage.Phase)
case *event.TaskExecutionEvent:
tid := eventMessage.TaskId
nid := eventMessage.ParentNodeExecutionId
wid := nid.ExecutionId
id = fmt.Sprintf("%s:%s:%s:%s:%s:%s:%d:%d:%d", wid.Project, wid.Domain, wid.Name, nid.NodeId, tid.Name, tid.Version, eventMessage.RetryAttempt, eventMessage.Phase, eventMessage.PhaseVersion)
default:
return nil, fmt.Errorf("unknown event type [%s]", eventMessage.String())
}
return []byte(id), nil
}
func initializeAdminClientFromConfig(ctx context.Context, config *Config) (client service.AdminServiceClient, err error) {
cfg := admin2.GetConfig(ctx)
tracerProvider := otelutils.GetTracerProvider(otelutils.AdminClientTracer)
grpcOptions := []grpcRetry.CallOption{
grpcRetry.WithBackoff(grpcRetry.BackoffExponentialWithJitter(time.Duration(config.BackoffScalar)*time.Millisecond, config.GetBackoffJitter(ctx))),
grpcRetry.WithMax(uint(config.MaxRetries)),
}
opt := grpc.WithChainUnaryInterceptor(
otelgrpc.UnaryClientInterceptor(
otelgrpc.WithTracerProvider(tracerProvider),
otelgrpc.WithPropagators(propagation.TraceContext{}),
),
grpcRetry.UnaryClientInterceptor(grpcOptions...),
)
clients, err := admin2.NewClientsetBuilder().WithDialOptions(opt).WithConfig(cfg).Build(ctx)
if err != nil {
return nil, fmt.Errorf("failed to initialize clientset. Error: %w", err)
}
return clients.AdminClient(), nil
}
func ConstructEventSink(ctx context.Context, config *Config, scope promutils.Scope) (EventSink, error) {
switch config.Type {
case EventSinkLog:
return NewLogSink()
case EventSinkFile:
return NewFileSink(config.FilePath)
case EventSinkAdmin:
adminClient, err := initializeAdminClientFromConfig(ctx, config)
if err != nil {
return nil, err
}
filter, err := fastcheck.NewOppoBloomFilter(50000, scope.NewSubScope("admin").NewSubScope("filter"))
if err != nil {
return nil, err
}
return NewAdminEventSink(ctx, adminClient, config, filter)
default:
return NewStdoutSink()
}
}