60 lines
1.8 KiB
Go
60 lines
1.8 KiB
Go
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// Copyright 2023 The NATS Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//go:build internal_testing
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// +build internal_testing
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// Functions in this file are only available when building nats.go with the
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// internal_testing build tag. They are used by the nats.go test suite.
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package nats
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// AddMsgFilter adds a message filter for the given subject
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// to the connection. The filter will be called for each
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// message received on the subject. If the filter returns
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// nil, the message will be dropped.
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func (nc *Conn) AddMsgFilter(subject string, filter msgFilter) {
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nc.subsMu.Lock()
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defer nc.subsMu.Unlock()
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if nc.filters == nil {
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nc.filters = make(map[string]msgFilter)
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}
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nc.filters[subject] = filter
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}
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// RemoveMsgFilter removes a message filter for the given subject.
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func (nc *Conn) RemoveMsgFilter(subject string) {
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nc.subsMu.Lock()
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defer nc.subsMu.Unlock()
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if nc.filters != nil {
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delete(nc.filters, subject)
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if len(nc.filters) == 0 {
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nc.filters = nil
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}
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}
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}
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// IsJSControlMessage returns true if the message is a JetStream control message.
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func IsJSControlMessage(msg *Msg) (bool, int) {
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return isJSControlMessage(msg)
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}
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// CloseTCPConn closes the underlying TCP connection.
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// It can be used to simulate a disconnect.
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func (nc *Conn) CloseTCPConn() {
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nc.mu.Lock()
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defer nc.mu.Unlock()
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nc.conn.Close()
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}
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