@angular-devkit/architect
Version:
Angular Build Facade
146 lines • 22.7 kB
JavaScript
;
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.createLoggerJob = exports.createJobFactory = exports.createJobHandler = exports.ChannelAlreadyExistException = void 0;
const core_1 = require("@angular-devkit/core");
const rxjs_1 = require("rxjs");
const api_1 = require("./api");
class ChannelAlreadyExistException extends core_1.BaseException {
constructor(name) {
super(`Channel ${JSON.stringify(name)} already exist.`);
}
}
exports.ChannelAlreadyExistException = ChannelAlreadyExistException;
/**
* Make a simple job handler that sets start and end from a function that's synchronous.
*
* @param fn The function to create a handler for.
* @param options An optional set of properties to set on the handler. Some fields might be
* required by registry or schedulers.
*/
function createJobHandler(fn, options = {}) {
const handler = (argument, context) => {
const description = context.description;
const inboundBus = context.inboundBus;
const inputChannel = new rxjs_1.Subject();
let subscription;
const teardownLogics = [];
let tearingDown = false;
return new rxjs_1.Observable((subject) => {
function complete() {
if (subscription) {
subscription.unsubscribe();
}
subject.next({ kind: api_1.JobOutboundMessageKind.End, description });
subject.complete();
inputChannel.complete();
}
// Handle input.
const inboundSub = inboundBus.subscribe((message) => {
switch (message.kind) {
case api_1.JobInboundMessageKind.Ping:
subject.next({ kind: api_1.JobOutboundMessageKind.Pong, description, id: message.id });
break;
case api_1.JobInboundMessageKind.Stop:
// Run teardown logic then complete.
tearingDown = true;
if (teardownLogics.length) {
Promise.all(teardownLogics.map((fn) => fn())).then(() => complete(), () => complete());
}
else {
complete();
}
break;
case api_1.JobInboundMessageKind.Input:
if (!tearingDown) {
inputChannel.next(message.value);
}
break;
}
});
// Execute the function with the additional context.
const channels = new Map();
const newContext = {
...context,
input: inputChannel.asObservable(),
addTeardown(teardown) {
teardownLogics.push(teardown);
},
createChannel(name) {
if (channels.has(name)) {
throw new ChannelAlreadyExistException(name);
}
const channelSubject = new rxjs_1.Subject();
const channelSub = channelSubject.subscribe((message) => {
subject.next({
kind: api_1.JobOutboundMessageKind.ChannelMessage,
description,
name,
message,
});
}, (error) => {
subject.next({ kind: api_1.JobOutboundMessageKind.ChannelError, description, name, error });
// This can be reopened.
channels.delete(name);
}, () => {
subject.next({ kind: api_1.JobOutboundMessageKind.ChannelComplete, description, name });
// This can be reopened.
channels.delete(name);
});
channels.set(name, channelSubject);
if (subscription) {
subscription.add(channelSub);
}
return channelSubject;
},
};
subject.next({ kind: api_1.JobOutboundMessageKind.Start, description });
let result = fn(argument, newContext);
// If the result is a promise, simply wait for it to complete before reporting the result.
if ((0, core_1.isPromise)(result)) {
result = (0, rxjs_1.from)(result);
}
else if (!(0, rxjs_1.isObservable)(result)) {
result = (0, rxjs_1.of)(result);
}
subscription = result.subscribe((value) => subject.next({ kind: api_1.JobOutboundMessageKind.Output, description, value }), (error) => subject.error(error), () => complete());
subscription.add(inboundSub);
return subscription;
});
};
return Object.assign(handler, { jobDescription: options });
}
exports.createJobHandler = createJobHandler;
/**
* Lazily create a job using a function.
* @param loader A factory function that returns a promise/observable of a JobHandler.
* @param options Same options as createJob.
*/
function createJobFactory(loader, options = {}) {
const handler = (argument, context) => {
return (0, rxjs_1.from)(loader()).pipe((0, rxjs_1.switchMap)((fn) => fn(argument, context)));
};
return Object.assign(handler, { jobDescription: options });
}
exports.createJobFactory = createJobFactory;
/**
* Creates a job that logs out input/output messages of another Job. The messages are still
* propagated to the other job.
*/
function createLoggerJob(job, logger) {
const handler = (argument, context) => {
context.inboundBus
.pipe((0, rxjs_1.tap)((message) => logger.info(`Input: ${JSON.stringify(message)}`)))
.subscribe();
return job(argument, context).pipe((0, rxjs_1.tap)((message) => logger.info(`Message: ${JSON.stringify(message)}`), (error) => logger.warn(`Error: ${JSON.stringify(error)}`), () => logger.info(`Completed`)));
};
return Object.assign(handler, job);
}
exports.createLoggerJob = createLoggerJob;
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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport { BaseException, JsonValue, isPromise, logging } from '@angular-devkit/core';\nimport {\n  Observable,\n  Observer,\n  Subject,\n  Subscription,\n  from,\n  isObservable,\n  of,\n  switchMap,\n  tap,\n} from 'rxjs';\nimport {\n  JobDescription,\n  JobHandler,\n  JobHandlerContext,\n  JobInboundMessageKind,\n  JobOutboundMessage,\n  JobOutboundMessageKind,\n} from './api';\n\nexport class ChannelAlreadyExistException extends BaseException {\n  constructor(name: string) {\n    super(`Channel ${JSON.stringify(name)} already exist.`);\n  }\n}\n\n/**\n * Interface for the JobHandler context that is used when using `createJobHandler()`. It extends\n * the basic `JobHandlerContext` with additional functionality.\n */\nexport interface SimpleJobHandlerContext<\n  A extends JsonValue,\n  I extends JsonValue,\n  O extends JsonValue,\n> extends JobHandlerContext<A, I, O> {\n  createChannel: (name: string) => Observer<JsonValue>;\n  input: Observable<I>;\n  addTeardown(teardown: () => Promise<void> | void): void;\n}\n\n/**\n * A simple version of the JobHandler. This simplifies a lot of the interaction with the job\n * scheduler and registry. For example, instead of returning a JobOutboundMessage observable, you\n * can directly return an output.\n */\nexport type SimpleJobHandlerFn<A extends JsonValue, I extends JsonValue, O extends JsonValue> = (\n  input: A,\n  context: SimpleJobHandlerContext<A, I, O>,\n) => O | Promise<O> | Observable<O>;\n\n/**\n * Make a simple job handler that sets start and end from a function that's synchronous.\n *\n * @param fn The function to create a handler for.\n * @param options An optional set of properties to set on the handler. Some fields might be\n *   required by registry or schedulers.\n */\nexport function createJobHandler<A extends JsonValue, I extends JsonValue, O extends JsonValue>(\n  fn: SimpleJobHandlerFn<A, I, O>,\n  options: Partial<JobDescription> = {},\n): JobHandler<A, I, O> {\n  const handler = (argument: A, context: JobHandlerContext<A, I, O>) => {\n    const description = context.description;\n    const inboundBus = context.inboundBus;\n    const inputChannel = new Subject<I>();\n    let subscription: Subscription;\n    const teardownLogics: Array<() => PromiseLike<void> | void> = [];\n    let tearingDown = false;\n\n    return new Observable<JobOutboundMessage<O>>((subject) => {\n      function complete() {\n        if (subscription) {\n          subscription.unsubscribe();\n        }\n        subject.next({ kind: JobOutboundMessageKind.End, description });\n        subject.complete();\n        inputChannel.complete();\n      }\n\n      // Handle input.\n      const inboundSub = inboundBus.subscribe((message) => {\n        switch (message.kind) {\n          case JobInboundMessageKind.Ping:\n            subject.next({ kind: JobOutboundMessageKind.Pong, description, id: message.id });\n            break;\n\n          case JobInboundMessageKind.Stop:\n            // Run teardown logic then complete.\n            tearingDown = true;\n            if (teardownLogics.length) {\n              Promise.all(teardownLogics.map((fn) => fn())).then(\n                () => complete(),\n                () => complete(),\n              );\n            } else {\n              complete();\n            }\n            break;\n\n          case JobInboundMessageKind.Input:\n            if (!tearingDown) {\n              inputChannel.next(message.value);\n            }\n            break;\n        }\n      });\n\n      // Execute the function with the additional context.\n      const channels = new Map<string, Subject<JsonValue>>();\n\n      const newContext: SimpleJobHandlerContext<A, I, O> = {\n        ...context,\n        input: inputChannel.asObservable(),\n        addTeardown(teardown: () => Promise<void> | void): void {\n          teardownLogics.push(teardown);\n        },\n        createChannel(name: string) {\n          if (channels.has(name)) {\n            throw new ChannelAlreadyExistException(name);\n          }\n          const channelSubject = new Subject<JsonValue>();\n          const channelSub = channelSubject.subscribe(\n            (message) => {\n              subject.next({\n                kind: JobOutboundMessageKind.ChannelMessage,\n                description,\n                name,\n                message,\n              });\n            },\n            (error) => {\n              subject.next({ kind: JobOutboundMessageKind.ChannelError, description, name, error });\n              // This can be reopened.\n              channels.delete(name);\n            },\n            () => {\n              subject.next({ kind: JobOutboundMessageKind.ChannelComplete, description, name });\n              // This can be reopened.\n              channels.delete(name);\n            },\n          );\n\n          channels.set(name, channelSubject);\n          if (subscription) {\n            subscription.add(channelSub);\n          }\n\n          return channelSubject;\n        },\n      };\n\n      subject.next({ kind: JobOutboundMessageKind.Start, description });\n      let result = fn(argument, newContext);\n      // If the result is a promise, simply wait for it to complete before reporting the result.\n      if (isPromise(result)) {\n        result = from(result);\n      } else if (!isObservable(result)) {\n        result = of(result as O);\n      }\n\n      subscription = (result as Observable<O>).subscribe(\n        (value: O) => subject.next({ kind: JobOutboundMessageKind.Output, description, value }),\n        (error) => subject.error(error),\n        () => complete(),\n      );\n      subscription.add(inboundSub);\n\n      return subscription;\n    });\n  };\n\n  return Object.assign(handler, { jobDescription: options });\n}\n\n/**\n * Lazily create a job using a function.\n * @param loader A factory function that returns a promise/observable of a JobHandler.\n * @param options Same options as createJob.\n */\nexport function createJobFactory<A extends JsonValue, I extends JsonValue, O extends JsonValue>(\n  loader: () => Promise<JobHandler<A, I, O>>,\n  options: Partial<JobDescription> = {},\n): JobHandler<A, I, O> {\n  const handler = (argument: A, context: JobHandlerContext<A, I, O>) => {\n    return from(loader()).pipe(switchMap((fn) => fn(argument, context)));\n  };\n\n  return Object.assign(handler, { jobDescription: options });\n}\n\n/**\n * Creates a job that logs out input/output messages of another Job. The messages are still\n * propagated to the other job.\n */\nexport function createLoggerJob<A extends JsonValue, I extends JsonValue, O extends JsonValue>(\n  job: JobHandler<A, I, O>,\n  logger: logging.LoggerApi,\n): JobHandler<A, I, O> {\n  const handler = (argument: A, context: JobHandlerContext<A, I, O>) => {\n    context.inboundBus\n      .pipe(tap((message) => logger.info(`Input: ${JSON.stringify(message)}`)))\n      .subscribe();\n\n    return job(argument, context).pipe(\n      tap(\n        (message) => logger.info(`Message: ${JSON.stringify(message)}`),\n        (error) => logger.warn(`Error: ${JSON.stringify(error)}`),\n        () => logger.info(`Completed`),\n      ),\n    );\n  };\n\n  return Object.assign(handler, job);\n}\n"]}