1 files changed, 0 insertions, 821 deletions
diff --git a/frontend-old/node_modules/@grpc/grpc-js/src/retrying-call.ts b/frontend-old/node_modules/@grpc/grpc-js/src/retrying-call.ts
deleted file mode 100644
index e6e1cbb..0000000
--- a/frontend-old/node_modules/@grpc/grpc-js/src/retrying-call.ts
+++ /dev/null
@@ -1,821 +0,0 @@
-/*
- * 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.
- *
- */
-
-import { CallCredentials } from './call-credentials';
-import { LogVerbosity, Status } from './constants';
-import { Deadline } from './deadline';
-import { Metadata } from './metadata';
-import { CallConfig } from './resolver';
-import * as logging from './logging';
-import {
-  Call,
-  InterceptingListener,
-  MessageContext,
-  StatusObject,
-  WriteCallback,
-  WriteObject,
-} from './call-interface';
-import {
-  LoadBalancingCall,
-  StatusObjectWithProgress,
-} from './load-balancing-call';
-import { InternalChannel } from './internal-channel';
-
-const TRACER_NAME = 'retrying_call';
-
-export class RetryThrottler {
-  private tokens: number;
-  constructor(
-    private readonly maxTokens: number,
-    private readonly tokenRatio: number,
-    previousRetryThrottler?: RetryThrottler
-  ) {
-    if (previousRetryThrottler) {
-      /* When carrying over tokens from a previous config, rescale them to the
-       * new max value */
-      this.tokens =
-        previousRetryThrottler.tokens *
-        (maxTokens / previousRetryThrottler.maxTokens);
-    } else {
-      this.tokens = maxTokens;
-    }
-  }
-
-  addCallSucceeded() {
-    this.tokens = Math.max(this.tokens + this.tokenRatio, this.maxTokens);
-  }
-
-  addCallFailed() {
-    this.tokens = Math.min(this.tokens - 1, 0);
-  }
-
-  canRetryCall() {
-    return this.tokens > this.maxTokens / 2;
-  }
-}
-
-export class MessageBufferTracker {
-  private totalAllocated = 0;
-  private allocatedPerCall: Map<number, number> = new Map<number, number>();
-
-  constructor(private totalLimit: number, private limitPerCall: number) {}
-
-  allocate(size: number, callId: number): boolean {
-    const currentPerCall = this.allocatedPerCall.get(callId) ?? 0;
-    if (
-      this.limitPerCall - currentPerCall < size ||
-      this.totalLimit - this.totalAllocated < size
-    ) {
-      return false;
-    }
-    this.allocatedPerCall.set(callId, currentPerCall + size);
-    this.totalAllocated += size;
-    return true;
-  }
-
-  free(size: number, callId: number) {
-    if (this.totalAllocated < size) {
-      throw new Error(
-        `Invalid buffer allocation state: call ${callId} freed ${size} > total allocated ${this.totalAllocated}`
-      );
-    }
-    this.totalAllocated -= size;
-    const currentPerCall = this.allocatedPerCall.get(callId) ?? 0;
-    if (currentPerCall < size) {
-      throw new Error(
-        `Invalid buffer allocation state: call ${callId} freed ${size} > allocated for call ${currentPerCall}`
-      );
-    }
-    this.allocatedPerCall.set(callId, currentPerCall - size);
-  }
-
-  freeAll(callId: number) {
-    const currentPerCall = this.allocatedPerCall.get(callId) ?? 0;
-    if (this.totalAllocated < currentPerCall) {
-      throw new Error(
-        `Invalid buffer allocation state: call ${callId} allocated ${currentPerCall} > total allocated ${this.totalAllocated}`
-      );
-    }
-    this.totalAllocated -= currentPerCall;
-    this.allocatedPerCall.delete(callId);
-  }
-}
-
-type UnderlyingCallState = 'ACTIVE' | 'COMPLETED';
-
-interface UnderlyingCall {
-  state: UnderlyingCallState;
-  call: LoadBalancingCall;
-  nextMessageToSend: number;
-}
-
-/**
- * A retrying call can be in one of these states:
- * RETRY: Retries are configured and new attempts may be sent
- * HEDGING: Hedging is configured and new attempts may be sent
- * TRANSPARENT_ONLY: Neither retries nor hedging are configured, and
- * transparent retry attempts may still be sent
- * COMMITTED: One attempt is committed, and no new attempts will be
- * sent
- */
-type RetryingCallState = 'RETRY' | 'HEDGING' | 'TRANSPARENT_ONLY' | 'COMMITTED';
-
-/**
- * The different types of objects that can be stored in the write buffer, with
- * the following meanings:
- * MESSAGE: This is a message to be sent.
- * HALF_CLOSE: When this entry is reached, the calls should send a half-close.
- * FREED: This slot previously contained a message that has been sent on all
- * child calls and is no longer needed.
- */
-type WriteBufferEntryType = 'MESSAGE' | 'HALF_CLOSE' | 'FREED';
-
-/**
- * Entry in the buffer of messages to send to the remote end.
- */
-interface WriteBufferEntry {
-  entryType: WriteBufferEntryType;
-  /**
-   * Message to send.
-   * Only populated if entryType is MESSAGE.
-   */
-  message?: WriteObject;
-  /**
-   * Callback to call after sending the message.
-   * Only populated if entryType is MESSAGE and the call is in the COMMITTED
-   * state.
-   */
-  callback?: WriteCallback;
-  /**
-   * Indicates whether the message is allocated in the buffer tracker. Ignored
-   * if entryType is not MESSAGE. Should be the return value of
-   * bufferTracker.allocate.
-   */
-  allocated: boolean;
-}
-
-const PREVIONS_RPC_ATTEMPTS_METADATA_KEY = 'grpc-previous-rpc-attempts';
-
-export class RetryingCall implements Call {
-  private state: RetryingCallState;
-  private listener: InterceptingListener | null = null;
-  private initialMetadata: Metadata | null = null;
-  private underlyingCalls: UnderlyingCall[] = [];
-  private writeBuffer: WriteBufferEntry[] = [];
-  /**
-   * The offset of message indices in the writeBuffer. For example, if
-   * writeBufferOffset is 10, message 10 is in writeBuffer[0] and message 15
-   * is in writeBuffer[5].
-   */
-  private writeBufferOffset = 0;
-  /**
-   * Tracks whether a read has been started, so that we know whether to start
-   * reads on new child calls. This only matters for the first read, because
-   * once a message comes in the child call becomes committed and there will
-   * be no new child calls.
-   */
-  private readStarted = false;
-  private transparentRetryUsed = false;
-  /**
-   * Number of attempts so far
-   */
-  private attempts = 0;
-  private hedgingTimer: NodeJS.Timeout | null = null;
-  private committedCallIndex: number | null = null;
-  private initialRetryBackoffSec = 0;
-  private nextRetryBackoffSec = 0;
-  constructor(
-    private readonly channel: InternalChannel,
-    private readonly callConfig: CallConfig,
-    private readonly methodName: string,
-    private readonly host: string,
-    private readonly credentials: CallCredentials,
-    private readonly deadline: Deadline,
-    private readonly callNumber: number,
-    private readonly bufferTracker: MessageBufferTracker,
-    private readonly retryThrottler?: RetryThrottler
-  ) {
-    if (callConfig.methodConfig.retryPolicy) {
-      this.state = 'RETRY';
-      const retryPolicy = callConfig.methodConfig.retryPolicy;
-      this.nextRetryBackoffSec = this.initialRetryBackoffSec = Number(
-        retryPolicy.initialBackoff.substring(
-          0,
-          retryPolicy.initialBackoff.length - 1
-        )
-      );
-    } else if (callConfig.methodConfig.hedgingPolicy) {
-      this.state = 'HEDGING';
-    } else {
-      this.state = 'TRANSPARENT_ONLY';
-    }
-  }
-  getCallNumber(): number {
-    return this.callNumber;
-  }
-
-  private trace(text: string): void {
-    logging.trace(
-      LogVerbosity.DEBUG,
-      TRACER_NAME,
-      '[' + this.callNumber + '] ' + text
-    );
-  }
-
-  private reportStatus(statusObject: StatusObject) {
-    this.trace(
-      'ended with status: code=' +
-        statusObject.code +
-        ' details="' +
-        statusObject.details +
-        '"'
-    );
-    this.bufferTracker.freeAll(this.callNumber);
-    this.writeBufferOffset = this.writeBufferOffset + this.writeBuffer.length;
-    this.writeBuffer = [];
-    process.nextTick(() => {
-      // Explicitly construct status object to remove progress field
-      this.listener?.onReceiveStatus({
-        code: statusObject.code,
-        details: statusObject.details,
-        metadata: statusObject.metadata,
-      });
-    });
-  }
-
-  cancelWithStatus(status: Status, details: string): void {
-    this.trace(
-      'cancelWithStatus code: ' + status + ' details: "' + details + '"'
-    );
-    this.reportStatus({ code: status, details, metadata: new Metadata() });
-    for (const { call } of this.underlyingCalls) {
-      call.cancelWithStatus(status, details);
-    }
-  }
-  getPeer(): string {
-    if (this.committedCallIndex !== null) {
-      return this.underlyingCalls[this.committedCallIndex].call.getPeer();
-    } else {
-      return 'unknown';
-    }
-  }
-
-  private getBufferEntry(messageIndex: number): WriteBufferEntry {
-    return (
-      this.writeBuffer[messageIndex - this.writeBufferOffset] ?? {
-        entryType: 'FREED',
-        allocated: false,
-      }
-    );
-  }
-
-  private getNextBufferIndex() {
-    return this.writeBufferOffset + this.writeBuffer.length;
-  }
-
-  private clearSentMessages() {
-    if (this.state !== 'COMMITTED') {
-      return;
-    }
-    const earliestNeededMessageIndex =
-      this.underlyingCalls[this.committedCallIndex!].nextMessageToSend;
-    for (
-      let messageIndex = this.writeBufferOffset;
-      messageIndex < earliestNeededMessageIndex;
-      messageIndex++
-    ) {
-      const bufferEntry = this.getBufferEntry(messageIndex);
-      if (bufferEntry.allocated) {
-        this.bufferTracker.free(
-          bufferEntry.message!.message.length,
-          this.callNumber
-        );
-      }
-    }
-    this.writeBuffer = this.writeBuffer.slice(
-      earliestNeededMessageIndex - this.writeBufferOffset
-    );
-    this.writeBufferOffset = earliestNeededMessageIndex;
-  }
-
-  private commitCall(index: number) {
-    if (this.state === 'COMMITTED') {
-      return;
-    }
-    if (this.underlyingCalls[index].state === 'COMPLETED') {
-      return;
-    }
-    this.trace(
-      'Committing call [' +
-        this.underlyingCalls[index].call.getCallNumber() +
-        '] at index ' +
-        index
-    );
-    this.state = 'COMMITTED';
-    this.committedCallIndex = index;
-    for (let i = 0; i < this.underlyingCalls.length; i++) {
-      if (i === index) {
-        continue;
-      }
-      if (this.underlyingCalls[i].state === 'COMPLETED') {
-        continue;
-      }
-      this.underlyingCalls[i].state = 'COMPLETED';
-      this.underlyingCalls[i].call.cancelWithStatus(
-        Status.CANCELLED,
-        'Discarded in favor of other hedged attempt'
-      );
-    }
-    this.clearSentMessages();
-  }
-
-  private commitCallWithMostMessages() {
-    if (this.state === 'COMMITTED') {
-      return;
-    }
-    let mostMessages = -1;
-    let callWithMostMessages = -1;
-    for (const [index, childCall] of this.underlyingCalls.entries()) {
-      if (
-        childCall.state === 'ACTIVE' &&
-        childCall.nextMessageToSend > mostMessages
-      ) {
-        mostMessages = childCall.nextMessageToSend;
-        callWithMostMessages = index;
-      }
-    }
-    if (callWithMostMessages === -1) {
-      /* There are no active calls, disable retries to force the next call that
-       * is started to be committed. */
-      this.state = 'TRANSPARENT_ONLY';
-    } else {
-      this.commitCall(callWithMostMessages);
-    }
-  }
-
-  private isStatusCodeInList(list: (Status | string)[], code: Status) {
-    return list.some(
-      value =>
-        value === code ||
-        value.toString().toLowerCase() === Status[code].toLowerCase()
-    );
-  }
-
-  private getNextRetryBackoffMs() {
-    const retryPolicy = this.callConfig?.methodConfig.retryPolicy;
-    if (!retryPolicy) {
-      return 0;
-    }
-    const nextBackoffMs = Math.random() * this.nextRetryBackoffSec * 1000;
-    const maxBackoffSec = Number(
-      retryPolicy.maxBackoff.substring(0, retryPolicy.maxBackoff.length - 1)
-    );
-    this.nextRetryBackoffSec = Math.min(
-      this.nextRetryBackoffSec * retryPolicy.backoffMultiplier,
-      maxBackoffSec
-    );
-    return nextBackoffMs;
-  }
-
-  private maybeRetryCall(
-    pushback: number | null,
-    callback: (retried: boolean) => void
-  ) {
-    if (this.state !== 'RETRY') {
-      callback(false);
-      return;
-    }
-    const retryPolicy = this.callConfig!.methodConfig.retryPolicy!;
-    if (this.attempts >= Math.min(retryPolicy.maxAttempts, 5)) {
-      callback(false);
-      return;
-    }
-    let retryDelayMs: number;
-    if (pushback === null) {
-      retryDelayMs = this.getNextRetryBackoffMs();
-    } else if (pushback < 0) {
-      this.state = 'TRANSPARENT_ONLY';
-      callback(false);
-      return;
-    } else {
-      retryDelayMs = pushback;
-      this.nextRetryBackoffSec = this.initialRetryBackoffSec;
-    }
-    setTimeout(() => {
-      if (this.state !== 'RETRY') {
-        callback(false);
-        return;
-      }
-      if (this.retryThrottler?.canRetryCall() ?? true) {
-        callback(true);
-        this.attempts += 1;
-        this.startNewAttempt();
-      }
-    }, retryDelayMs);
-  }
-
-  private countActiveCalls(): number {
-    let count = 0;
-    for (const call of this.underlyingCalls) {
-      if (call?.state === 'ACTIVE') {
-        count += 1;
-      }
-    }
-    return count;
-  }
-
-  private handleProcessedStatus(
-    status: StatusObject,
-    callIndex: number,
-    pushback: number | null
-  ) {
-    switch (this.state) {
-      case 'COMMITTED':
-      case 'TRANSPARENT_ONLY':
-        this.commitCall(callIndex);
-        this.reportStatus(status);
-        break;
-      case 'HEDGING':
-        if (
-          this.isStatusCodeInList(
-            this.callConfig!.methodConfig.hedgingPolicy!.nonFatalStatusCodes ??
-              [],
-            status.code
-          )
-        ) {
-          this.retryThrottler?.addCallFailed();
-          let delayMs: number;
-          if (pushback === null) {
-            delayMs = 0;
-          } else if (pushback < 0) {
-            this.state = 'TRANSPARENT_ONLY';
-            this.commitCall(callIndex);
-            this.reportStatus(status);
-            return;
-          } else {
-            delayMs = pushback;
-          }
-          setTimeout(() => {
-            this.maybeStartHedgingAttempt();
-            // If after trying to start a call there are no active calls, this was the last one
-            if (this.countActiveCalls() === 0) {
-              this.commitCall(callIndex);
-              this.reportStatus(status);
-            }
-          }, delayMs);
-        } else {
-          this.commitCall(callIndex);
-          this.reportStatus(status);
-        }
-        break;
-      case 'RETRY':
-        if (
-          this.isStatusCodeInList(
-            this.callConfig!.methodConfig.retryPolicy!.retryableStatusCodes,
-            status.code
-          )
-        ) {
-          this.retryThrottler?.addCallFailed();
-          this.maybeRetryCall(pushback, retried => {
-            if (!retried) {
-              this.commitCall(callIndex);
-              this.reportStatus(status);
-            }
-          });
-        } else {
-          this.commitCall(callIndex);
-          this.reportStatus(status);
-        }
-        break;
-    }
-  }
-
-  private getPushback(metadata: Metadata): number | null {
-    const mdValue = metadata.get('grpc-retry-pushback-ms');
-    if (mdValue.length === 0) {
-      return null;
-    }
-    try {
-      return parseInt(mdValue[0] as string);
-    } catch (e) {
-      return -1;
-    }
-  }
-
-  private handleChildStatus(
-    status: StatusObjectWithProgress,
-    callIndex: number
-  ) {
-    if (this.underlyingCalls[callIndex].state === 'COMPLETED') {
-      return;
-    }
-    this.trace(
-      'state=' +
-        this.state +
-        ' handling status with progress ' +
-        status.progress +
-        ' from child [' +
-        this.underlyingCalls[callIndex].call.getCallNumber() +
-        '] in state ' +
-        this.underlyingCalls[callIndex].state
-    );
-    this.underlyingCalls[callIndex].state = 'COMPLETED';
-    if (status.code === Status.OK) {
-      this.retryThrottler?.addCallSucceeded();
-      this.commitCall(callIndex);
-      this.reportStatus(status);
-      return;
-    }
-    if (this.state === 'COMMITTED') {
-      this.reportStatus(status);
-      return;
-    }
-    const pushback = this.getPushback(status.metadata);
-    switch (status.progress) {
-      case 'NOT_STARTED':
-        // RPC never leaves the client, always safe to retry
-        this.startNewAttempt();
-        break;
-      case 'REFUSED':
-        // RPC reaches the server library, but not the server application logic
-        if (this.transparentRetryUsed) {
-          this.handleProcessedStatus(status, callIndex, pushback);
-        } else {
-          this.transparentRetryUsed = true;
-          this.startNewAttempt();
-        }
-        break;
-      case 'DROP':
-        this.commitCall(callIndex);
-        this.reportStatus(status);
-        break;
-      case 'PROCESSED':
-        this.handleProcessedStatus(status, callIndex, pushback);
-        break;
-    }
-  }
-
-  private maybeStartHedgingAttempt() {
-    if (this.state !== 'HEDGING') {
-      return;
-    }
-    if (!this.callConfig.methodConfig.hedgingPolicy) {
-      return;
-    }
-    const hedgingPolicy = this.callConfig.methodConfig.hedgingPolicy;
-    if (this.attempts >= Math.min(hedgingPolicy.maxAttempts, 5)) {
-      return;
-    }
-    this.attempts += 1;
-    this.startNewAttempt();
-    this.maybeStartHedgingTimer();
-  }
-
-  private maybeStartHedgingTimer() {
-    if (this.hedgingTimer) {
-      clearTimeout(this.hedgingTimer);
-    }
-    if (this.state !== 'HEDGING') {
-      return;
-    }
-    if (!this.callConfig.methodConfig.hedgingPolicy) {
-      return;
-    }
-    const hedgingPolicy = this.callConfig.methodConfig.hedgingPolicy;
-    if (this.attempts >= Math.min(hedgingPolicy.maxAttempts, 5)) {
-      return;
-    }
-    const hedgingDelayString = hedgingPolicy.hedgingDelay ?? '0s';
-    const hedgingDelaySec = Number(
-      hedgingDelayString.substring(0, hedgingDelayString.length - 1)
-    );
-    this.hedgingTimer = setTimeout(() => {
-      this.maybeStartHedgingAttempt();
-    }, hedgingDelaySec * 1000);
-    this.hedgingTimer.unref?.();
-  }
-
-  private startNewAttempt() {
-    const child = this.channel.createLoadBalancingCall(
-      this.callConfig,
-      this.methodName,
-      this.host,
-      this.credentials,
-      this.deadline
-    );
-    this.trace(
-      'Created child call [' +
-        child.getCallNumber() +
-        '] for attempt ' +
-        this.attempts
-    );
-    const index = this.underlyingCalls.length;
-    this.underlyingCalls.push({
-      state: 'ACTIVE',
-      call: child,
-      nextMessageToSend: 0,
-    });
-    const previousAttempts = this.attempts - 1;
-    const initialMetadata = this.initialMetadata!.clone();
-    if (previousAttempts > 0) {
-      initialMetadata.set(
-        PREVIONS_RPC_ATTEMPTS_METADATA_KEY,
-        `${previousAttempts}`
-      );
-    }
-    let receivedMetadata = false;
-    child.start(initialMetadata, {
-      onReceiveMetadata: metadata => {
-        this.trace(
-          'Received metadata from child [' + child.getCallNumber() + ']'
-        );
-        this.commitCall(index);
-        receivedMetadata = true;
-        if (previousAttempts > 0) {
-          metadata.set(
-            PREVIONS_RPC_ATTEMPTS_METADATA_KEY,
-            `${previousAttempts}`
-          );
-        }
-        if (this.underlyingCalls[index].state === 'ACTIVE') {
-          this.listener!.onReceiveMetadata(metadata);
-        }
-      },
-      onReceiveMessage: message => {
-        this.trace(
-          'Received message from child [' + child.getCallNumber() + ']'
-        );
-        this.commitCall(index);
-        if (this.underlyingCalls[index].state === 'ACTIVE') {
-          this.listener!.onReceiveMessage(message);
-        }
-      },
-      onReceiveStatus: status => {
-        this.trace(
-          'Received status from child [' + child.getCallNumber() + ']'
-        );
-        if (!receivedMetadata && previousAttempts > 0) {
-          status.metadata.set(
-            PREVIONS_RPC_ATTEMPTS_METADATA_KEY,
-            `${previousAttempts}`
-          );
-        }
-        this.handleChildStatus(status, index);
-      },
-    });
-    this.sendNextChildMessage(index);
-    if (this.readStarted) {
-      child.startRead();
-    }
-  }
-
-  start(metadata: Metadata, listener: InterceptingListener): void {
-    this.trace('start called');
-    this.listener = listener;
-    this.initialMetadata = metadata;
-    this.attempts += 1;
-    this.startNewAttempt();
-    this.maybeStartHedgingTimer();
-  }
-
-  private handleChildWriteCompleted(childIndex: number) {
-    const childCall = this.underlyingCalls[childIndex];
-    const messageIndex = childCall.nextMessageToSend;
-    this.getBufferEntry(messageIndex).callback?.();
-    this.clearSentMessages();
-    childCall.nextMessageToSend += 1;
-    this.sendNextChildMessage(childIndex);
-  }
-
-  private sendNextChildMessage(childIndex: number) {
-    const childCall = this.underlyingCalls[childIndex];
-    if (childCall.state === 'COMPLETED') {
-      return;
-    }
-    if (this.getBufferEntry(childCall.nextMessageToSend)) {
-      const bufferEntry = this.getBufferEntry(childCall.nextMessageToSend);
-      switch (bufferEntry.entryType) {
-        case 'MESSAGE':
-          childCall.call.sendMessageWithContext(
-            {
-              callback: error => {
-                // Ignore error
-                this.handleChildWriteCompleted(childIndex);
-              },
-            },
-            bufferEntry.message!.message
-          );
-          break;
-        case 'HALF_CLOSE':
-          childCall.nextMessageToSend += 1;
-          childCall.call.halfClose();
-          break;
-        case 'FREED':
-          // Should not be possible
-          break;
-      }
-    }
-  }
-
-  sendMessageWithContext(context: MessageContext, message: Buffer): void {
-    this.trace('write() called with message of length ' + message.length);
-    const writeObj: WriteObject = {
-      message,
-      flags: context.flags,
-    };
-    const messageIndex = this.getNextBufferIndex();
-    const bufferEntry: WriteBufferEntry = {
-      entryType: 'MESSAGE',
-      message: writeObj,
-      allocated: this.bufferTracker.allocate(message.length, this.callNumber),
-    };
-    this.writeBuffer.push(bufferEntry);
-    if (bufferEntry.allocated) {
-      context.callback?.();
-      for (const [callIndex, call] of this.underlyingCalls.entries()) {
-        if (
-          call.state === 'ACTIVE' &&
-          call.nextMessageToSend === messageIndex
-        ) {
-          call.call.sendMessageWithContext(
-            {
-              callback: error => {
-                // Ignore error
-                this.handleChildWriteCompleted(callIndex);
-              },
-            },
-            message
-          );
-        }
-      }
-    } else {
-      this.commitCallWithMostMessages();
-      // commitCallWithMostMessages can fail if we are between ping attempts
-      if (this.committedCallIndex === null) {
-        return;
-      }
-      const call = this.underlyingCalls[this.committedCallIndex];
-      bufferEntry.callback = context.callback;
-      if (call.state === 'ACTIVE' && call.nextMessageToSend === messageIndex) {
-        call.call.sendMessageWithContext(
-          {
-            callback: error => {
-              // Ignore error
-              this.handleChildWriteCompleted(this.committedCallIndex!);
-            },
-          },
-          message
-        );
-      }
-    }
-  }
-  startRead(): void {
-    this.trace('startRead called');
-    this.readStarted = true;
-    for (const underlyingCall of this.underlyingCalls) {
-      if (underlyingCall?.state === 'ACTIVE') {
-        underlyingCall.call.startRead();
-      }
-    }
-  }
-  halfClose(): void {
-    this.trace('halfClose called');
-    const halfCloseIndex = this.getNextBufferIndex();
-    this.writeBuffer.push({
-      entryType: 'HALF_CLOSE',
-      allocated: false,
-    });
-    for (const call of this.underlyingCalls) {
-      if (
-        call?.state === 'ACTIVE' &&
-        call.nextMessageToSend === halfCloseIndex
-      ) {
-        call.nextMessageToSend += 1;
-        call.call.halfClose();
-      }
-    }
-  }
-  setCredentials(newCredentials: CallCredentials): void {
-    throw new Error('Method not implemented.');
-  }
-  getMethod(): string {
-    return this.methodName;
-  }
-  getHost(): string {
-    return this.host;
-  }
-}