| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package golang |
| |
| import ( |
| "fmt" |
| "time" |
| |
| v2 "github.com/apache/rocketmq-clients/golang/protocol/v2" |
| "google.golang.org/protobuf/types/known/durationpb" |
| ) |
| |
| type FilterExpressionType int32 |
| |
| const ( |
| SQL92 FilterExpressionType = iota |
| TAG |
| UNSPECIFIED |
| ) |
| |
| type FilterExpression struct { |
| expression string |
| expressionType FilterExpressionType |
| } |
| |
| var SUB_ALL = NewFilterExpression("*") |
| |
| var NewFilterExpression = func(expression string) *FilterExpression { |
| return &FilterExpression{ |
| expression: expression, |
| expressionType: TAG, |
| } |
| } |
| |
| var NewFilterExpressionWithType = func(expression string, expressionType FilterExpressionType) *FilterExpression { |
| return &FilterExpression{ |
| expression: expression, |
| expressionType: expressionType, |
| } |
| } |
| |
| type simpleConsumerOptions struct { |
| subscriptionExpressions map[string]*FilterExpression |
| awaitDuration time.Duration |
| clientFunc NewClientFunc |
| } |
| |
| var defaultSimpleConsumerOptions = simpleConsumerOptions{ |
| clientFunc: NewClient, |
| } |
| |
| // A ConsumerOption sets options such as tag, etc. |
| type SimpleConsumerOption interface { |
| apply(*simpleConsumerOptions) |
| } |
| |
| // funcOption wraps a function that modifies options into an implementation of |
| // the Option interface. |
| type funcSimpleConsumerOption struct { |
| f func(*simpleConsumerOptions) |
| } |
| |
| func (fo *funcSimpleConsumerOption) apply(do *simpleConsumerOptions) { |
| fo.f(do) |
| } |
| |
| func newFuncSimpleConsumerOption(f func(*simpleConsumerOptions)) *funcSimpleConsumerOption { |
| return &funcSimpleConsumerOption{ |
| f: f, |
| } |
| } |
| |
| // WithTag returns a consumerOption that sets tag for consumer. |
| // Note: Default it uses *. |
| func WithSubscriptionExpressions(subscriptionExpressions map[string]*FilterExpression) SimpleConsumerOption { |
| return newFuncSimpleConsumerOption(func(o *simpleConsumerOptions) { |
| o.subscriptionExpressions = subscriptionExpressions |
| }) |
| } |
| |
| func WithAwaitDuration(awaitDuration time.Duration) SimpleConsumerOption { |
| return newFuncSimpleConsumerOption(func(o *simpleConsumerOptions) { |
| o.awaitDuration = awaitDuration |
| }) |
| } |
| |
| var _ = ClientSettings(&simpleConsumerSettings{}) |
| |
| type simpleConsumerSettings struct { |
| clientId string |
| endpoints *v2.Endpoints |
| clientType v2.ClientType |
| retryPolicy *v2.RetryPolicy |
| requestTimeout time.Duration |
| |
| groupName *v2.Resource |
| longPollingTimeout time.Duration |
| subscriptionExpressions map[string]*FilterExpression |
| } |
| |
| // GetAccessPoint implements ClientSettings |
| func (sc *simpleConsumerSettings) GetAccessPoint() *v2.Endpoints { |
| return sc.endpoints |
| } |
| |
| // GetClientID implements ClientSettings |
| func (sc *simpleConsumerSettings) GetClientID() string { |
| return sc.clientId |
| } |
| |
| // GetClientType implements ClientSettings |
| func (sc *simpleConsumerSettings) GetClientType() v2.ClientType { |
| return sc.clientType |
| } |
| |
| // GetRequestTimeout implements ClientSettings |
| func (sc *simpleConsumerSettings) GetRequestTimeout() time.Duration { |
| return sc.requestTimeout |
| } |
| |
| // GetRetryPolicy implements ClientSettings |
| func (sc *simpleConsumerSettings) GetRetryPolicy() *v2.RetryPolicy { |
| return sc.retryPolicy |
| } |
| |
| // applySettingsCommand implements ClientSettings |
| func (sc *simpleConsumerSettings) applySettingsCommand(settings *v2.Settings) error { |
| pubSub := settings.GetPubSub() |
| if pubSub == nil { |
| return fmt.Errorf("onSettingsCommand err = pubSub is nil") |
| } |
| _, ok := pubSub.(*v2.Settings_Subscription) |
| if !ok { |
| return fmt.Errorf("[bug] Issued settings not match with the client type, clientId=%v, clientType=%v", sc.GetClientID(), sc.GetClientType()) |
| } |
| return nil |
| } |
| |
| // toProtobuf implements ClientSettings |
| func (sc *simpleConsumerSettings) toProtobuf() *v2.Settings { |
| subscriptions := make([]*v2.SubscriptionEntry, 0) |
| for k, v := range sc.subscriptionExpressions { |
| topic := &v2.Resource{ |
| Name: k, |
| } |
| filterExpression := &v2.FilterExpression{ |
| Expression: v.expression, |
| } |
| switch v.expressionType { |
| case SQL92: |
| filterExpression.Type = v2.FilterType_SQL |
| case TAG: |
| filterExpression.Type = v2.FilterType_TAG |
| default: |
| filterExpression.Type = v2.FilterType_FILTER_TYPE_UNSPECIFIED |
| sugarBaseLogger.Warnf("[bug] Unrecognized filter type for simple consumer, type=%v, client_id=%v", v.expressionType, sc.clientId) |
| } |
| subscriptions = append(subscriptions, &v2.SubscriptionEntry{ |
| Topic: topic, |
| Expression: filterExpression, |
| }) |
| } |
| subSetting := &v2.Settings_Subscription{ |
| Subscription: &v2.Subscription{ |
| Group: sc.groupName, |
| Subscriptions: subscriptions, |
| LongPollingTimeout: durationpb.New(sc.longPollingTimeout), |
| }, |
| } |
| settings := &v2.Settings{ |
| ClientType: &sc.clientType, |
| AccessPoint: sc.GetAccessPoint(), |
| RequestTimeout: durationpb.New(sc.requestTimeout), |
| PubSub: subSetting, |
| UserAgent: globalUserAgent.toProtoBuf(), |
| } |
| return settings |
| } |