FM / src

/var/www/greso.tech/server/nsm/node_modules/@grpc/grpc-js/src/

/var/www/greso.tech/server/nsm/node_modules/@grpc/grpc-js/src

Name	Size	Mode	Actions
generated/	-	0755	rm
admin.ts	1345	0644	edit dl rm
backoff-timeout.ts	4719	0644	edit dl rm
call-credentials.ts	6555	0644	edit dl rm
call-interface.ts	4982	0644	edit dl rm
call-number.ts	694	0644	edit dl rm
call.ts	5447	0644	edit dl rm
channel-credentials.ts	8753	0644	edit dl rm
channel-options.ts	4100	0644	edit dl rm
channel.ts	5547	0644	edit dl rm
channelz.ts	26226	0644	edit dl rm
client-interceptors.ts	17901	0644	edit dl rm
client.ts	24828	0644	edit dl rm
compression-algorithms.ts	682	0644	edit dl rm
compression-filter.ts	10167	0644	edit dl rm
connectivity-state.ts	699	0644	edit dl rm
constants.ts	1651	0644	edit dl rm
control-plane-status.ts	1222	0644	edit dl rm
deadline.ts	2935	0644	edit dl rm
duration.ts	1096	0644	edit dl rm
error.ts	1062	0644	edit dl rm
events.ts	1108	0644	edit dl rm
experimental.ts	1352	0644	edit dl rm
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http_proxy.ts	8827	0644	edit dl rm
index.ts	7918	0644	edit dl rm
internal-channel.ts	21831	0644	edit dl rm
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load-balancing-call.ts	10585	0644	edit dl rm
logging.ts	3407	0644	edit dl rm
make-client.ts	7201	0644	edit dl rm
max-message-size-filter.ts	3049	0644	edit dl rm
metadata.ts	8988	0644	edit dl rm
object-stream.ts	2214	0644	edit dl rm
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resolving-call.ts	9856	0644	edit dl rm
resolving-load-balancer.ts	11508	0644	edit dl rm
retrying-call.ts	23079	0644	edit dl rm
server-call.ts	27256	0644	edit dl rm
server-credentials.ts	2822	0644	edit dl rm
server.ts	37334	0644	edit dl rm
service-config.ts	15852	0644	edit dl rm
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stream-decoder.ts	3501	0644	edit dl rm
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tls-helpers.ts	1088	0644	edit dl rm
transport.ts	25264	0644	edit dl rm
uri-parser.ts	2814	0644	edit dl rm

Edit: /var/www/greso.tech/server/nsm/node_modules/@grpc/grpc-js/src/client.ts (24828B)

/*
 * Copyright 2019 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.
 *
 */

import {
  ClientDuplexStream,
  ClientDuplexStreamImpl,
  ClientReadableStream,
  ClientReadableStreamImpl,
  ClientUnaryCall,
  ClientUnaryCallImpl,
  ClientWritableStream,
  ClientWritableStreamImpl,
  ServiceError,
  callErrorFromStatus,
  SurfaceCall,
} from './call';
import { CallCredentials } from './call-credentials';
import { StatusObject } from './call-interface';
import { Channel, ChannelImplementation } from './channel';
import { ConnectivityState } from './connectivity-state';
import { ChannelCredentials } from './channel-credentials';
import { ChannelOptions } from './channel-options';
import { Status } from './constants';
import { Metadata } from './metadata';
import { ClientMethodDefinition } from './make-client';
import {
  getInterceptingCall,
  Interceptor,
  InterceptorProvider,
  InterceptorArguments,
  InterceptingCallInterface,
} from './client-interceptors';
import {
  ServerUnaryCall,
  ServerReadableStream,
  ServerWritableStream,
  ServerDuplexStream,
} from './server-call';
import { Deadline } from './deadline';

const CHANNEL_SYMBOL = Symbol();
const INTERCEPTOR_SYMBOL = Symbol();
const INTERCEPTOR_PROVIDER_SYMBOL = Symbol();
const CALL_INVOCATION_TRANSFORMER_SYMBOL = Symbol();

function isFunction<ResponseType>(
  arg: Metadata | CallOptions | UnaryCallback<ResponseType> | undefined
): arg is UnaryCallback<ResponseType> {
  return typeof arg === 'function';
}

export interface UnaryCallback<ResponseType> {
  (err: ServiceError | null, value?: ResponseType): void;
}

/* eslint-disable @typescript-eslint/no-explicit-any */
export interface CallOptions {
  deadline?: Deadline;
  host?: string;
  parent?:
    | ServerUnaryCall<any, any>
    | ServerReadableStream<any, any>
    | ServerWritableStream<any, any>
    | ServerDuplexStream<any, any>;
  propagate_flags?: number;
  credentials?: CallCredentials;
  interceptors?: Interceptor[];
  interceptor_providers?: InterceptorProvider[];
}
/* eslint-enable @typescript-eslint/no-explicit-any */

export interface CallProperties<RequestType, ResponseType> {
  argument?: RequestType;
  metadata: Metadata;
  call: SurfaceCall;
  channel: Channel;
  methodDefinition: ClientMethodDefinition<RequestType, ResponseType>;
  callOptions: CallOptions;
  callback?: UnaryCallback<ResponseType>;
}

export interface CallInvocationTransformer {
  (callProperties: CallProperties<any, any>): CallProperties<any, any>; // eslint-disable-line @typescript-eslint/no-explicit-any
}

export type ClientOptions = Partial<ChannelOptions> & {
  channelOverride?: Channel;
  channelFactoryOverride?: (
    address: string,
    credentials: ChannelCredentials,
    options: ClientOptions
  ) => Channel;
  interceptors?: Interceptor[];
  interceptor_providers?: InterceptorProvider[];
  callInvocationTransformer?: CallInvocationTransformer;
};

function getErrorStackString(error: Error): string {
  return error.stack!.split('\n').slice(1).join('\n');
}

/**
 * A generic gRPC client. Primarily useful as a base class for all generated
 * clients.
 */
export class Client {
  private readonly [CHANNEL_SYMBOL]: Channel;
  private readonly [INTERCEPTOR_SYMBOL]: Interceptor[];
  private readonly [INTERCEPTOR_PROVIDER_SYMBOL]: InterceptorProvider[];
  private readonly [CALL_INVOCATION_TRANSFORMER_SYMBOL]?: CallInvocationTransformer;
  constructor(
    address: string,
    credentials: ChannelCredentials,
    options: ClientOptions = {}
  ) {
    options = Object.assign({}, options);
    this[INTERCEPTOR_SYMBOL] = options.interceptors ?? [];
    delete options.interceptors;
    this[INTERCEPTOR_PROVIDER_SYMBOL] = options.interceptor_providers ?? [];
    delete options.interceptor_providers;
    if (
      this[INTERCEPTOR_SYMBOL].length > 0 &&
      this[INTERCEPTOR_PROVIDER_SYMBOL].length > 0
    ) {
      throw new Error(
        'Both interceptors and interceptor_providers were passed as options ' +
          'to the client constructor. Only one of these is allowed.'
      );
    }
    this[CALL_INVOCATION_TRANSFORMER_SYMBOL] =
      options.callInvocationTransformer;
    delete options.callInvocationTransformer;
    if (options.channelOverride) {
      this[CHANNEL_SYMBOL] = options.channelOverride;
    } else if (options.channelFactoryOverride) {
      const channelFactoryOverride = options.channelFactoryOverride;
      delete options.channelFactoryOverride;
      this[CHANNEL_SYMBOL] = channelFactoryOverride(
        address,
        credentials,
        options
      );
    } else {
      this[CHANNEL_SYMBOL] = new ChannelImplementation(
        address,
        credentials,
        options
      );
    }
  }

close(): void {
    this[CHANNEL_SYMBOL].close();
  }

getChannel(): Channel {
    return this[CHANNEL_SYMBOL];
  }

waitForReady(deadline: Deadline, callback: (error?: Error) => void): void {
    const checkState = (err?: Error) => {
      if (err) {
        callback(new Error('Failed to connect before the deadline'));
        return;
      }
      let newState;
      try {
        newState = this[CHANNEL_SYMBOL].getConnectivityState(true);
      } catch (e) {
        callback(new Error('The channel has been closed'));
        return;
      }
      if (newState === ConnectivityState.READY) {
        callback();
      } else {
        try {
          this[CHANNEL_SYMBOL].watchConnectivityState(
            newState,
            deadline,
            checkState
          );
        } catch (e) {
          callback(new Error('The channel has been closed'));
        }
      }
    };
    setImmediate(checkState);
  }

private checkOptionalUnaryResponseArguments<ResponseType>(
    arg1: Metadata | CallOptions | UnaryCallback<ResponseType>,
    arg2?: CallOptions | UnaryCallback<ResponseType>,
    arg3?: UnaryCallback<ResponseType>
  ): {
    metadata: Metadata;
    options: CallOptions;
    callback: UnaryCallback<ResponseType>;
  } {
    if (isFunction(arg1)) {
      return { metadata: new Metadata(), options: {}, callback: arg1 };
    } else if (isFunction(arg2)) {
      if (arg1 instanceof Metadata) {
        return { metadata: arg1, options: {}, callback: arg2 };
      } else {
        return { metadata: new Metadata(), options: arg1, callback: arg2 };
      }
    } else {
      if (
        !(
          arg1 instanceof Metadata &&
          arg2 instanceof Object &&
          isFunction(arg3)
        )
      ) {
        throw new Error('Incorrect arguments passed');
      }
      return { metadata: arg1, options: arg2, callback: arg3 };
    }
  }

makeUnaryRequest<RequestType, ResponseType>(
    method: string,
    serialize: (value: RequestType) => Buffer,
    deserialize: (value: Buffer) => ResponseType,
    argument: RequestType,
    metadata: Metadata,
    options: CallOptions,
    callback: UnaryCallback<ResponseType>
  ): ClientUnaryCall;
  makeUnaryRequest<RequestType, ResponseType>(
    method: string,
    serialize: (value: RequestType) => Buffer,
    deserialize: (value: Buffer) => ResponseType,
    argument: RequestType,
    metadata: Metadata,
    callback: UnaryCallback<ResponseType>
  ): ClientUnaryCall;
  makeUnaryRequest<RequestType, ResponseType>(
    method: string,
    serialize: (value: RequestType) => Buffer,
    deserialize: (value: Buffer) => ResponseType,
    argument: RequestType,
    options: CallOptions,
    callback: UnaryCallback<ResponseType>
  ): ClientUnaryCall;
  makeUnaryRequest<RequestType, ResponseType>(
    method: string,
    serialize: (value: RequestType) => Buffer,
    deserialize: (value: Buffer) => ResponseType,
    argument: RequestType,
    callback: UnaryCallback<ResponseType>
  ): ClientUnaryCall;
  makeUnaryRequest<RequestType, ResponseType>(
    method: string,
    serialize: (value: RequestType) => Buffer,
    deserialize: (value: Buffer) => ResponseType,
    argument: RequestType,
    metadata: Metadata | CallOptions | UnaryCallback<ResponseType>,
    options?: CallOptions | UnaryCallback<ResponseType>,
    callback?: UnaryCallback<ResponseType>
  ): ClientUnaryCall {
    const checkedArguments = this.checkOptionalUnaryResponseArguments<ResponseType>(
      metadata,
      options,
      callback
    );
    const methodDefinition: ClientMethodDefinition<
      RequestType,
      ResponseType
    > = {
      path: method,
      requestStream: false,
      responseStream: false,
      requestSerialize: serialize,
      responseDeserialize: deserialize,
    };
    let callProperties: CallProperties<RequestType, ResponseType> = {
      argument: argument,
      metadata: checkedArguments.metadata,
      call: new ClientUnaryCallImpl(),
      channel: this[CHANNEL_SYMBOL],
      methodDefinition: methodDefinition,
      callOptions: checkedArguments.options,
      callback: checkedArguments.callback,
    };
    if (this[CALL_INVOCATION_TRANSFORMER_SYMBOL]) {
      callProperties = this[CALL_INVOCATION_TRANSFORMER_SYMBOL]!(
        callProperties
      ) as CallProperties<RequestType, ResponseType>;
    }
    const emitter: ClientUnaryCall = callProperties.call;
    const interceptorArgs: InterceptorArguments = {
      clientInterceptors: this[INTERCEPTOR_SYMBOL],
      clientInterceptorProviders: this[INTERCEPTOR_PROVIDER_SYMBOL],
      callInterceptors: callProperties.callOptions.interceptors ?? [],
      callInterceptorProviders:
        callProperties.callOptions.interceptor_providers ?? [],
    };
    const call: InterceptingCallInterface = getInterceptingCall(
      interceptorArgs,
      callProperties.methodDefinition,
      callProperties.callOptions,
      callProperties.channel
    );
    /* This needs to happen before the emitter is used. Unfortunately we can't
     * enforce this with the type system. We need to construct this emitter
     * before calling the CallInvocationTransformer, and we need to create the
     * call after that. */
    emitter.call = call;
    let responseMessage: ResponseType | null = null;
    let receivedStatus = false;
    let callerStackError: Error | null = new Error();
    call.start(callProperties.metadata, {
      onReceiveMetadata: (metadata) => {
        emitter.emit('metadata', metadata);
      },
      // eslint-disable-next-line @typescript-eslint/no-explicit-any
      onReceiveMessage(message: any) {
        if (responseMessage !== null) {
          call.cancelWithStatus(Status.INTERNAL, 'Too many responses received');
        }
        responseMessage = message;
      },
      onReceiveStatus(status: StatusObject) {
        if (receivedStatus) {
          return;
        }
        receivedStatus = true;
        if (status.code === Status.OK) {
          if (responseMessage === null) {
            const callerStack = getErrorStackString(callerStackError!);
            callProperties.callback!(callErrorFromStatus({
              code: Status.INTERNAL,
              details: 'No message received',
              metadata: status.metadata
            }, /*callerStack*/''));
          } else {
            callProperties.callback!(null, responseMessage);
          }
        } else {
          const callerStack = getErrorStackString(callerStackError!);
          callProperties.callback!(callErrorFromStatus(status, /*callerStack*/''));
        }
        /* Avoid retaining the callerStackError object in the call context of
         * the status event handler. */
        callerStackError = null;
        emitter.emit('status', status);
      },
    });
    call.sendMessage(argument);
    call.halfClose();
    return emitter;
  }

makeClientStreamRequest<RequestType, ResponseType>(
    method: string,
    serialize: (value: RequestType) => Buffer,
    deserialize: (value: Buffer) => ResponseType,
    metadata: Metadata,
    options: CallOptions,
    callback: UnaryCallback<ResponseType>
  ): ClientWritableStream<RequestType>;
  makeClientStreamRequest<RequestType, ResponseType>(
    method: string,
    serialize: (value: RequestType) => Buffer,
    deserialize: (value: Buffer) => ResponseType,
    metadata: Metadata,
    callback: UnaryCallback<ResponseType>
  ): ClientWritableStream<RequestType>;
  makeClientStreamRequest<RequestType, ResponseType>(
    method: string,
    serialize: (value: RequestType) => Buffer,
    deserialize: (value: Buffer) => ResponseType,
    options: CallOptions,
    callback: UnaryCallback<ResponseType>
  ): ClientWritableStream<RequestType>;
  makeClientStreamRequest<RequestType, ResponseType>(
    method: string,
    serialize: (value: RequestType) => Buffer,
    deserialize: (value: Buffer) => ResponseType,
    callback: UnaryCallback<ResponseType>
  ): ClientWritableStream<RequestType>;
  makeClientStreamRequest<RequestType, ResponseType>(
    method: string,
    serialize: (value: RequestType) => Buffer,
    deserialize: (value: Buffer) => ResponseType,
    metadata: Metadata | CallOptions | UnaryCallback<ResponseType>,
    options?: CallOptions | UnaryCallback<ResponseType>,
    callback?: UnaryCallback<ResponseType>
  ): ClientWritableStream<RequestType> {
    const checkedArguments = this.checkOptionalUnaryResponseArguments<ResponseType>(
      metadata,
      options,
      callback
    );
    const methodDefinition: ClientMethodDefinition<
      RequestType,
      ResponseType
    > = {
      path: method,
      requestStream: true,
      responseStream: false,
      requestSerialize: serialize,
      responseDeserialize: deserialize,
    };
    let callProperties: CallProperties<RequestType, ResponseType> = {
      metadata: checkedArguments.metadata,
      call: new ClientWritableStreamImpl<RequestType>(serialize),
      channel: this[CHANNEL_SYMBOL],
      methodDefinition: methodDefinition,
      callOptions: checkedArguments.options,
      callback: checkedArguments.callback,
    };
    if (this[CALL_INVOCATION_TRANSFORMER_SYMBOL]) {
      callProperties = this[CALL_INVOCATION_TRANSFORMER_SYMBOL]!(
        callProperties
      ) as CallProperties<RequestType, ResponseType>;
    }
    const emitter: ClientWritableStream<RequestType> = callProperties.call as ClientWritableStream<RequestType>;
    const interceptorArgs: InterceptorArguments = {
      clientInterceptors: this[INTERCEPTOR_SYMBOL],
      clientInterceptorProviders: this[INTERCEPTOR_PROVIDER_SYMBOL],
      callInterceptors: callProperties.callOptions.interceptors ?? [],
      callInterceptorProviders:
        callProperties.callOptions.interceptor_providers ?? [],
    };
    const call: InterceptingCallInterface = getInterceptingCall(
      interceptorArgs,
      callProperties.methodDefinition,
      callProperties.callOptions,
      callProperties.channel
    );
    /* This needs to happen before the emitter is used. Unfortunately we can't
     * enforce this with the type system. We need to construct this emitter
     * before calling the CallInvocationTransformer, and we need to create the
     * call after that. */
    emitter.call = call;
    let responseMessage: ResponseType | null = null;
    let receivedStatus = false;
    let callerStackError: Error | null = new Error();
    call.start(callProperties.metadata, {
      onReceiveMetadata: (metadata) => {
        emitter.emit('metadata', metadata);
      },
      // eslint-disable-next-line @typescript-eslint/no-explicit-any
      onReceiveMessage(message: any) {
        if (responseMessage !== null) {
          call.cancelWithStatus(Status.INTERNAL, 'Too many responses received');
        }
        responseMessage = message;
      },
      onReceiveStatus(status: StatusObject) {
        if (receivedStatus) {
          return;
        }
        receivedStatus = true;
        if (status.code === Status.OK) {
          if (responseMessage === null) {
            const callerStack = getErrorStackString(callerStackError!);
            callProperties.callback!(callErrorFromStatus({
              code: Status.INTERNAL,
              details: 'No message received',
              metadata: status.metadata
            }, callerStack));
          } else {
            callProperties.callback!(null, responseMessage);
          }
        } else {
          const callerStack = getErrorStackString(callerStackError!);
          callProperties.callback!(callErrorFromStatus(status, callerStack));
        }
        /* Avoid retaining the callerStackError object in the call context of
         * the status event handler. */
        callerStackError = null;
        emitter.emit('status', status);
      },
    });
    return emitter;
  }

private checkMetadataAndOptions(
    arg1?: Metadata | CallOptions,
    arg2?: CallOptions
  ): { metadata: Metadata; options: CallOptions } {
    let metadata: Metadata;
    let options: CallOptions;
    if (arg1 instanceof Metadata) {
      metadata = arg1;
      if (arg2) {
        options = arg2;
      } else {
        options = {};
      }
    } else {
      if (arg1) {
        options = arg1;
      } else {
        options = {};
      }
      metadata = new Metadata();
    }
    return { metadata, options };
  }

makeServerStreamRequest<RequestType, ResponseType>(
    method: string,
    serialize: (value: RequestType) => Buffer,
    deserialize: (value: Buffer) => ResponseType,
    argument: RequestType,
    metadata: Metadata,
    options?: CallOptions
  ): ClientReadableStream<ResponseType>;
  makeServerStreamRequest<RequestType, ResponseType>(
    method: string,
    serialize: (value: RequestType) => Buffer,
    deserialize: (value: Buffer) => ResponseType,
    argument: RequestType,
    options?: CallOptions
  ): ClientReadableStream<ResponseType>;
  makeServerStreamRequest<RequestType, ResponseType>(
    method: string,
    serialize: (value: RequestType) => Buffer,
    deserialize: (value: Buffer) => ResponseType,
    argument: RequestType,
    metadata?: Metadata | CallOptions,
    options?: CallOptions
  ): ClientReadableStream<ResponseType> {
    const checkedArguments = this.checkMetadataAndOptions(metadata, options);
    const methodDefinition: ClientMethodDefinition<
      RequestType,
      ResponseType
    > = {
      path: method,
      requestStream: false,
      responseStream: true,
      requestSerialize: serialize,
      responseDeserialize: deserialize,
    };
    let callProperties: CallProperties<RequestType, ResponseType> = {
      argument: argument,
      metadata: checkedArguments.metadata,
      call: new ClientReadableStreamImpl<ResponseType>(deserialize),
      channel: this[CHANNEL_SYMBOL],
      methodDefinition: methodDefinition,
      callOptions: checkedArguments.options,
    };
    if (this[CALL_INVOCATION_TRANSFORMER_SYMBOL]) {
      callProperties = this[CALL_INVOCATION_TRANSFORMER_SYMBOL]!(
        callProperties
      ) as CallProperties<RequestType, ResponseType>;
    }
    const stream: ClientReadableStream<ResponseType> = callProperties.call as ClientReadableStream<ResponseType>;
    const interceptorArgs: InterceptorArguments = {
      clientInterceptors: this[INTERCEPTOR_SYMBOL],
      clientInterceptorProviders: this[INTERCEPTOR_PROVIDER_SYMBOL],
      callInterceptors: callProperties.callOptions.interceptors ?? [],
      callInterceptorProviders:
        callProperties.callOptions.interceptor_providers ?? [],
    };
    const call: InterceptingCallInterface = getInterceptingCall(
      interceptorArgs,
      callProperties.methodDefinition,
      callProperties.callOptions,
      callProperties.channel
    );
    /* This needs to happen before the emitter is used. Unfortunately we can't
     * enforce this with the type system. We need to construct this emitter
     * before calling the CallInvocationTransformer, and we need to create the
     * call after that. */
    stream.call = call;
    let receivedStatus = false;
    let callerStackError: Error | null = new Error();
    call.start(callProperties.metadata, {
      onReceiveMetadata(metadata: Metadata) {
        stream.emit('metadata', metadata);
      },
      // eslint-disable-next-line @typescript-eslint/no-explicit-any
      onReceiveMessage(message: any) {
        stream.push(message);
      },
      onReceiveStatus(status: StatusObject) {
        if (receivedStatus) {
          return;
        }
        receivedStatus = true;
        stream.push(null);
        if (status.code !== Status.OK) {
          const callerStack = getErrorStackString(callerStackError!);
          stream.emit('error', callErrorFromStatus(status, callerStack));
        }
        /* Avoid retaining the callerStackError object in the call context of
         * the status event handler. */
        callerStackError = null;
        stream.emit('status', status);
      },
    });
    call.sendMessage(argument);
    call.halfClose();
    return stream;
  }

makeBidiStreamRequest<RequestType, ResponseType>(
    method: string,
    serialize: (value: RequestType) => Buffer,
    deserialize: (value: Buffer) => ResponseType,
    metadata: Metadata,
    options?: CallOptions
  ): ClientDuplexStream<RequestType, ResponseType>;
  makeBidiStreamRequest<RequestType, ResponseType>(
    method: string,
    serialize: (value: RequestType) => Buffer,
    deserialize: (value: Buffer) => ResponseType,
    options?: CallOptions
  ): ClientDuplexStream<RequestType, ResponseType>;
  makeBidiStreamRequest<RequestType, ResponseType>(
    method: string,
    serialize: (value: RequestType) => Buffer,
    deserialize: (value: Buffer) => ResponseType,
    metadata?: Metadata | CallOptions,
    options?: CallOptions
  ): ClientDuplexStream<RequestType, ResponseType> {
    const checkedArguments = this.checkMetadataAndOptions(metadata, options);
    const methodDefinition: ClientMethodDefinition<
      RequestType,
      ResponseType
    > = {
      path: method,
      requestStream: true,
      responseStream: true,
      requestSerialize: serialize,
      responseDeserialize: deserialize,
    };
    let callProperties: CallProperties<RequestType, ResponseType> = {
      metadata: checkedArguments.metadata,
      call: new ClientDuplexStreamImpl<RequestType, ResponseType>(
        serialize,
        deserialize
      ),
      channel: this[CHANNEL_SYMBOL],
      methodDefinition: methodDefinition,
      callOptions: checkedArguments.options,
    };
    if (this[CALL_INVOCATION_TRANSFORMER_SYMBOL]) {
      callProperties = this[CALL_INVOCATION_TRANSFORMER_SYMBOL]!(
        callProperties
      ) as CallProperties<RequestType, ResponseType>;
    }
    const stream: ClientDuplexStream<
      RequestType,
      ResponseType
    > = callProperties.call as ClientDuplexStream<RequestType, ResponseType>;
    const interceptorArgs: InterceptorArguments = {
      clientInterceptors: this[INTERCEPTOR_SYMBOL],
      clientInterceptorProviders: this[INTERCEPTOR_PROVIDER_SYMBOL],
      callInterceptors: callProperties.callOptions.interceptors ?? [],
      callInterceptorProviders:
        callProperties.callOptions.interceptor_providers ?? [],
    };
    const call: InterceptingCallInterface = getInterceptingCall(
      interceptorArgs,
      callProperties.methodDefinition,
      callProperties.callOptions,
      callProperties.channel
    );
    /* This needs to happen before the emitter is used. Unfortunately we can't
     * enforce this with the type system. We need to construct this emitter
     * before calling the CallInvocationTransformer, and we need to create the
     * call after that. */
    stream.call = call;
    let receivedStatus = false;
    let callerStackError: Error | null = new Error();
    call.start(callProperties.metadata, {
      onReceiveMetadata(metadata: Metadata) {
        stream.emit('metadata', metadata);
      },
      onReceiveMessage(message: Buffer) {
        stream.push(message);
      },
      onReceiveStatus(status: StatusObject) {
        if (receivedStatus) {
          return;
        }
        receivedStatus = true;
        stream.push(null);
        if (status.code !== Status.OK) {
          const callerStack = getErrorStackString(callerStackError!);
          stream.emit('error', callErrorFromStatus(status, callerStack));
        }
        /* Avoid retaining the callerStackError object in the call context of
         * the status event handler. */
        callerStackError = null;
        stream.emit('status', status);
      },
    });
    return stream;
  }
}

cmd: