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"use strict";
/*
* Copyright 2022 gRPC authors.
*
* Licensed 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.
*
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.InterceptingListenerImpl = void 0;
exports.isInterceptingListener = isInterceptingListener;
function isInterceptingListener(listener) {
return (listener.onReceiveMetadata !== undefined &&
listener.onReceiveMetadata.length === 1);
}
class InterceptingListenerImpl {
constructor(listener, nextListener) {
this.listener = listener;
this.nextListener = nextListener;
this.processingMetadata = false;
this.hasPendingMessage = false;
this.processingMessage = false;
this.pendingStatus = null;
}
processPendingMessage() {
if (this.hasPendingMessage) {
this.nextListener.onReceiveMessage(this.pendingMessage);
this.pendingMessage = null;
this.hasPendingMessage = false;
}
}
processPendingStatus() {
if (this.pendingStatus) {
this.nextListener.onReceiveStatus(this.pendingStatus);
}
}
onReceiveMetadata(metadata) {
this.processingMetadata = true;
this.listener.onReceiveMetadata(metadata, metadata => {
this.processingMetadata = false;
this.nextListener.onReceiveMetadata(metadata);
this.processPendingMessage();
this.processPendingStatus();
});
}
// eslint-disable-next-line @typescript-eslint/no-explicit-any
onReceiveMessage(message) {
/* If this listener processes messages asynchronously, the last message may
* be reordered with respect to the status */
this.processingMessage = true;
this.listener.onReceiveMessage(message, msg => {
this.processingMessage = false;
if (this.processingMetadata) {
this.pendingMessage = msg;
this.hasPendingMessage = true;
}
else {
this.nextListener.onReceiveMessage(msg);
this.processPendingStatus();
}
});
}
onReceiveStatus(status) {
this.listener.onReceiveStatus(status, processedStatus => {
if (this.processingMetadata || this.processingMessage) {
this.pendingStatus = processedStatus;
}
else {
this.nextListener.onReceiveStatus(processedStatus);
}
});
}
}
exports.InterceptingListenerImpl = InterceptingListenerImpl;
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