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authoraltaf-creator <dev@altafcreator.com>2025-11-16 19:08:29 +0800
committeraltaf-creator <dev@altafcreator.com>2025-11-16 19:08:29 +0800
commit434aa8343fdcbb4d5002f934979913c099489bee (patch)
tree55bab4ec5a6151be57797d34f61faf5ea744471b /frontend-old/node_modules/@grpc/grpc-js/src/picker.ts
parent893c388d4e99442a36005e5971a87730623f946e (diff)
sdk, del
Diffstat (limited to 'frontend-old/node_modules/@grpc/grpc-js/src/picker.ts')
-rw-r--r--frontend-old/node_modules/@grpc/grpc-js/src/picker.ts146
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diff --git a/frontend-old/node_modules/@grpc/grpc-js/src/picker.ts b/frontend-old/node_modules/@grpc/grpc-js/src/picker.ts
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--- a/frontend-old/node_modules/@grpc/grpc-js/src/picker.ts
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@@ -1,146 +0,0 @@
-/*
- * 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 { StatusObject } from './call-interface';
-import { Metadata } from './metadata';
-import { Status } from './constants';
-import { LoadBalancer } from './load-balancer';
-import { SubchannelInterface } from './subchannel-interface';
-
-export enum PickResultType {
- COMPLETE,
- QUEUE,
- TRANSIENT_FAILURE,
- DROP,
-}
-
-export interface PickResult {
- pickResultType: PickResultType;
- /**
- * The subchannel to use as the transport for the call. Only meaningful if
- * `pickResultType` is COMPLETE. If null, indicates that the call should be
- * dropped.
- */
- subchannel: SubchannelInterface | null;
- /**
- * The status object to end the call with. Populated if and only if
- * `pickResultType` is TRANSIENT_FAILURE.
- */
- status: StatusObject | null;
- onCallStarted: (() => void) | null;
- onCallEnded: ((statusCode: Status) => void) | null;
-}
-
-export interface CompletePickResult extends PickResult {
- pickResultType: PickResultType.COMPLETE;
- subchannel: SubchannelInterface | null;
- status: null;
- onCallStarted: (() => void) | null;
- onCallEnded: ((statusCode: Status) => void) | null;
-}
-
-export interface QueuePickResult extends PickResult {
- pickResultType: PickResultType.QUEUE;
- subchannel: null;
- status: null;
- onCallStarted: null;
- onCallEnded: null;
-}
-
-export interface TransientFailurePickResult extends PickResult {
- pickResultType: PickResultType.TRANSIENT_FAILURE;
- subchannel: null;
- status: StatusObject;
- onCallStarted: null;
- onCallEnded: null;
-}
-
-export interface DropCallPickResult extends PickResult {
- pickResultType: PickResultType.DROP;
- subchannel: null;
- status: StatusObject;
- onCallStarted: null;
- onCallEnded: null;
-}
-
-export interface PickArgs {
- metadata: Metadata;
- extraPickInfo: { [key: string]: string };
-}
-
-/**
- * A proxy object representing the momentary state of a load balancer. Picks
- * subchannels or returns other information based on that state. Should be
- * replaced every time the load balancer changes state.
- */
-export interface Picker {
- pick(pickArgs: PickArgs): PickResult;
-}
-
-/**
- * A standard picker representing a load balancer in the TRANSIENT_FAILURE
- * state. Always responds to every pick request with an UNAVAILABLE status.
- */
-export class UnavailablePicker implements Picker {
- private status: StatusObject;
- constructor(status?: Partial<StatusObject>) {
- this.status = {
- code: Status.UNAVAILABLE,
- details: 'No connection established',
- metadata: new Metadata(),
- ...status,
- };
- }
- pick(pickArgs: PickArgs): TransientFailurePickResult {
- return {
- pickResultType: PickResultType.TRANSIENT_FAILURE,
- subchannel: null,
- status: this.status,
- onCallStarted: null,
- onCallEnded: null,
- };
- }
-}
-
-/**
- * A standard picker representing a load balancer in the IDLE or CONNECTING
- * state. Always responds to every pick request with a QUEUE pick result
- * indicating that the pick should be tried again with the next `Picker`. Also
- * reports back to the load balancer that a connection should be established
- * once any pick is attempted.
- */
-export class QueuePicker {
- private calledExitIdle = false;
- // Constructed with a load balancer. Calls exitIdle on it the first time pick is called
- constructor(private loadBalancer: LoadBalancer) {}
-
- pick(pickArgs: PickArgs): QueuePickResult {
- if (!this.calledExitIdle) {
- process.nextTick(() => {
- this.loadBalancer.exitIdle();
- });
- this.calledExitIdle = true;
- }
- return {
- pickResultType: PickResultType.QUEUE,
- subchannel: null,
- status: null,
- onCallStarted: null,
- onCallEnded: null,
- };
- }
-}