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/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
filter-stack.ts	2674	0644	edit dl rm
filter.ts	1887	0644	edit dl rm
http_proxy.ts	8827	0644	edit dl rm
index.ts	7918	0644	edit dl rm
internal-channel.ts	21831	0644	edit dl rm
load-balancer-child-handler.ts	4868	0644	edit dl rm
load-balancer-outlier-detection.ts	25014	0644	edit dl rm
load-balancer-pick-first.ts	16073	0644	edit dl rm
load-balancer-round-robin.ts	7573	0644	edit dl rm
load-balancer.ts	7483	0644	edit dl rm
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
picker.ts	4328	0644	edit dl rm
resolver-dns.ts	13169	0644	edit dl rm
resolver-ip.ts	3559	0644	edit dl rm
resolver-uds.ts	1611	0644	edit dl rm
resolver.ts	5805	0644	edit dl rm
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
status-builder.ts	1783	0644	edit dl rm
stream-decoder.ts	3501	0644	edit dl rm
subchannel-address.ts	2307	0644	edit dl rm
subchannel-call.ts	18197	0644	edit dl rm
subchannel-interface.ts	2831	0644	edit dl rm
subchannel-pool.ts	5490	0644	edit dl rm
subchannel.ts	13755	0644	edit dl rm
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/load-balancer-round-robin.ts (7573B)

/*
 * 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 {
  LoadBalancer,
  ChannelControlHelper,
  LoadBalancingConfig,
  registerLoadBalancerType,
} from './load-balancer';
import { ConnectivityState } from './connectivity-state';
import {
  QueuePicker,
  Picker,
  PickArgs,
  CompletePickResult,
  PickResultType,
  UnavailablePicker,
} from './picker';
import {
  SubchannelAddress,
  subchannelAddressToString,
} from './subchannel-address';
import * as logging from './logging';
import { LogVerbosity } from './constants';
import { ConnectivityStateListener, SubchannelInterface } from './subchannel-interface';

const TRACER_NAME = 'round_robin';

function trace(text: string): void {
  logging.trace(LogVerbosity.DEBUG, TRACER_NAME, text);
}

const TYPE_NAME = 'round_robin';

class RoundRobinLoadBalancingConfig implements LoadBalancingConfig {
  getLoadBalancerName(): string {
    return TYPE_NAME;
  }

constructor() {}

toJsonObject(): object {
    return {
      [TYPE_NAME]: {},
    };
  }

// eslint-disable-next-line @typescript-eslint/no-explicit-any
  static createFromJson(obj: any) {
    return new RoundRobinLoadBalancingConfig();
  }
}

class RoundRobinPicker implements Picker {
  constructor(
    private readonly subchannelList: SubchannelInterface[],
    private nextIndex = 0
  ) {}

pick(pickArgs: PickArgs): CompletePickResult {
    const pickedSubchannel = this.subchannelList[this.nextIndex];
    this.nextIndex = (this.nextIndex + 1) % this.subchannelList.length;
    return {
      pickResultType: PickResultType.COMPLETE,
      subchannel: pickedSubchannel,
      status: null,
      onCallStarted: null,
      onCallEnded: null
    };
  }

/**
   * Check what the next subchannel returned would be. Used by the load
   * balancer implementation to preserve this part of the picker state if
   * possible when a subchannel connects or disconnects.
   */
  peekNextSubchannel(): SubchannelInterface {
    return this.subchannelList[this.nextIndex];
  }
}

interface ConnectivityStateCounts {
  [ConnectivityState.CONNECTING]: number;
  [ConnectivityState.IDLE]: number;
  [ConnectivityState.READY]: number;
  [ConnectivityState.SHUTDOWN]: number;
  [ConnectivityState.TRANSIENT_FAILURE]: number;
}

export class RoundRobinLoadBalancer implements LoadBalancer {
  private subchannels: SubchannelInterface[] = [];

private currentState: ConnectivityState = ConnectivityState.IDLE;

private subchannelStateListener: ConnectivityStateListener;

private subchannelStateCounts: ConnectivityStateCounts;

private currentReadyPicker: RoundRobinPicker | null = null;

constructor(private readonly channelControlHelper: ChannelControlHelper) {
    this.subchannelStateCounts = {
      [ConnectivityState.CONNECTING]: 0,
      [ConnectivityState.IDLE]: 0,
      [ConnectivityState.READY]: 0,
      [ConnectivityState.SHUTDOWN]: 0,
      [ConnectivityState.TRANSIENT_FAILURE]: 0,
    };
    this.subchannelStateListener = (
      subchannel: SubchannelInterface,
      previousState: ConnectivityState,
      newState: ConnectivityState
    ) => {
      this.subchannelStateCounts[previousState] -= 1;
      this.subchannelStateCounts[newState] += 1;
      this.calculateAndUpdateState();

if (
        newState === ConnectivityState.TRANSIENT_FAILURE ||
        newState === ConnectivityState.IDLE
      ) {
        this.channelControlHelper.requestReresolution();
        subchannel.startConnecting();
      }
    };
  }

private calculateAndUpdateState() {
    if (this.subchannelStateCounts[ConnectivityState.READY] > 0) {
      const readySubchannels = this.subchannels.filter(
        (subchannel) =>
          subchannel.getConnectivityState() === ConnectivityState.READY
      );
      let index = 0;
      if (this.currentReadyPicker !== null) {
        index = readySubchannels.indexOf(
          this.currentReadyPicker.peekNextSubchannel()
        );
        if (index < 0) {
          index = 0;
        }
      }
      this.updateState(
        ConnectivityState.READY,
        new RoundRobinPicker(readySubchannels, index)
      );
    } else if (this.subchannelStateCounts[ConnectivityState.CONNECTING] > 0) {
      this.updateState(ConnectivityState.CONNECTING, new QueuePicker(this));
    } else if (
      this.subchannelStateCounts[ConnectivityState.TRANSIENT_FAILURE] > 0
    ) {
      this.updateState(
        ConnectivityState.TRANSIENT_FAILURE,
        new UnavailablePicker()
      );
    } else {
      this.updateState(ConnectivityState.IDLE, new QueuePicker(this));
    }
  }

private updateState(newState: ConnectivityState, picker: Picker) {
    trace(
      ConnectivityState[this.currentState] +
        ' -> ' +
        ConnectivityState[newState]
    );
    if (newState === ConnectivityState.READY) {
      this.currentReadyPicker = picker as RoundRobinPicker;
    } else {
      this.currentReadyPicker = null;
    }
    this.currentState = newState;
    this.channelControlHelper.updateState(newState, picker);
  }

private resetSubchannelList() {
    for (const subchannel of this.subchannels) {
      subchannel.removeConnectivityStateListener(this.subchannelStateListener);
      subchannel.unref();
      this.channelControlHelper.removeChannelzChild(subchannel.getChannelzRef());
    }
    this.subchannelStateCounts = {
      [ConnectivityState.CONNECTING]: 0,
      [ConnectivityState.IDLE]: 0,
      [ConnectivityState.READY]: 0,
      [ConnectivityState.SHUTDOWN]: 0,
      [ConnectivityState.TRANSIENT_FAILURE]: 0,
    };
    this.subchannels = [];
  }

updateAddressList(
    addressList: SubchannelAddress[],
    lbConfig: LoadBalancingConfig
  ): void {
    this.resetSubchannelList();
    trace(
      'Connect to address list ' +
        addressList.map((address) => subchannelAddressToString(address))
    );
    this.subchannels = addressList.map((address) =>
      this.channelControlHelper.createSubchannel(address, {})
    );
    for (const subchannel of this.subchannels) {
      subchannel.ref();
      subchannel.addConnectivityStateListener(this.subchannelStateListener);
      this.channelControlHelper.addChannelzChild(subchannel.getChannelzRef());
      const subchannelState = subchannel.getConnectivityState();
      this.subchannelStateCounts[subchannelState] += 1;
      if (
        subchannelState === ConnectivityState.IDLE ||
        subchannelState === ConnectivityState.TRANSIENT_FAILURE
      ) {
        subchannel.startConnecting();
      }
    }
    this.calculateAndUpdateState();
  }

exitIdle(): void {
    for (const subchannel of this.subchannels) {
      subchannel.startConnecting();
    }
  }
  resetBackoff(): void {
    /* The pick first load balancer does not have a connection backoff, so this
     * does nothing */
  }
  destroy(): void {
    this.resetSubchannelList();
  }
  getTypeName(): string {
    return TYPE_NAME;
  }
}

export function setup() {
  registerLoadBalancerType(
    TYPE_NAME,
    RoundRobinLoadBalancer,
    RoundRobinLoadBalancingConfig
  );
}

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