@neo-one/server-plugin
Version:
NEO•ONE Server plugin API.
207 lines (205 loc) • 29.1 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const utils_1 = require("@neo-one/utils");
const rxjs_1 = require("rxjs");
const operators_1 = require("rxjs/operators");
const tasks_1 = require("./tasks");
class TaskWrapper {
constructor({ task, taskList, collapse, }) {
this.task = task;
this.taskList = taskList;
this.status$ = new rxjs_1.BehaviorSubject({
id: task.title,
title: task.title,
collapse,
});
this.skip = task.skip === undefined ? (_ctx) => false : task.skip;
this.getEnabled = task.enabled === undefined ? (_ctx) => true : task.enabled;
this.mutableAborted = false;
}
check(ctx) {
if (this.enabled && !this.pending && !this.done && !this.getEnabled(ctx)) {
this.status$.next(undefined);
}
}
get enabled() {
return this.status$.getValue() !== undefined;
}
get pending() {
const status = this.status$.getValue();
return status !== undefined && status.pending === true;
}
get done() {
const status = this.status$.getValue();
return status !== undefined && tasks_1.isTaskDone(status);
}
get error() {
const status = this.status$.getValue();
return status === undefined ? undefined : tasks_1.getTaskError(status);
}
abort() {
this.mutableAborted = true;
const status = this.status$.getValue();
if (status !== undefined) {
this.status$.next(Object.assign({}, status, { skipped: 'Aborted' }));
}
this.status$.complete();
}
complete() {
this.status$.complete();
}
async run(ctx) {
const statusIn = this.status$.getValue();
if (statusIn === undefined) {
this.status$.complete();
return;
}
if (this.mutableAborted) {
return;
}
let status = Object.assign({}, statusIn, { pending: true });
const onError = (error) => {
this.taskList.onError(error, ctx);
this.taskList.mutableSuperOnError(error);
};
try {
const skip = this.skip(ctx);
if (skip !== false) {
status = Object.assign({}, status, { pending: false, skipped: skip });
this.status$.next(status);
}
else {
this.status$.next(status);
const result = this.task.task(ctx);
let error;
let message;
if (result instanceof rxjs_1.Observable) {
await result
.pipe(operators_1.map((msg) => {
status = Object.assign({}, status, { message: msg });
this.status$.next(status);
}))
.toPromise();
}
else if (result instanceof Promise) {
message = await result;
}
else if (result instanceof TaskList) {
result.setSuperOnError(onError);
result.run(ctx);
const finalSubtasks = await result.status$
.pipe(operators_1.map((subtasks) => {
status = Object.assign({}, status, { subtasks });
this.status$.next(status);
return subtasks;
}))
.toPromise();
error = tasks_1.getTasksError(finalSubtasks);
}
this.status$.next(Object.assign({}, status, { pending: false, complete: error === undefined, message: message === undefined ? undefined : message, error }));
}
}
catch (error) {
const message = error.stack == undefined ? error.message : error.stack;
this.status$.next(Object.assign({}, status, { pending: false, error: message == undefined || message === '' ? 'Something went wrong.' : message }));
onError(error);
}
this.status$.complete();
}
}
class TaskList {
constructor({ tasks, concurrent = false, onError, onComplete, onDone, initialContext = {}, freshContext = false, collapse = true, }) {
this.tasks = tasks.map((task) => new TaskWrapper({
task,
taskList: this,
collapse,
}));
this.concurrent = concurrent;
this.onError =
onError === undefined
? (_error, _ctx) => {
}
: onError;
this.onComplete =
onComplete === undefined
? () => {
}
: onComplete;
this.onDone =
onDone === undefined
? (_failed) => {
}
: onDone;
this.initialContext = initialContext;
this.freshContext = freshContext;
this.mutableSuperOnError = (_error) => {
};
this.statusInternal$ = new rxjs_1.ReplaySubject(1);
}
get status$() {
this.run().catch((error) => this.onError(error, {}));
return this.statusInternal$;
}
async toPromise() {
const result = await this.status$.toPromise();
const error = tasks_1.getTasksError(result);
if (error !== undefined) {
throw new Error(error);
}
}
async abort() {
await this.abort$().toPromise();
}
abort$() {
this.tasks.forEach((task) => task.abort());
return this.status$;
}
setSuperOnError(onError) {
this.mutableSuperOnError = onError;
}
async run(ctxIn = {}) {
if (this.mutableSubscription !== undefined) {
return;
}
const ctx = this.freshContext ? {} : ctxIn;
Object.entries(this.initialContext).forEach(([key, value]) => {
ctx[key] = value;
});
this.checkAll(ctx);
this.mutableSubscription = rxjs_1.combineLatest(this.tasks.map((task) => task.status$))
.pipe(operators_1.map((statuses) => statuses.filter(utils_1.utils.notNull)))
.subscribe(this.statusInternal$);
await this.runTasks(ctx);
const err = tasks_1.getTasksError(this.tasks.map((task) => task.status$.getValue()).filter(utils_1.utils.notNull));
if (err === undefined) {
this.onComplete();
}
this.onDone(err !== undefined);
}
async runTasks(ctx) {
if (this.tasks.length === 0) {
this.statusInternal$.next([]);
return;
}
if (this.concurrent) {
await Promise.all(this.tasks.map(async (task) => task.run(ctx)));
}
else {
let error;
for (const task of this.tasks) {
if (error === undefined) {
await task.run(ctx);
}
else {
task.complete();
}
error = task.error;
}
}
}
checkAll(ctx) {
this.tasks.forEach((task) => task.check(ctx));
}
}
exports.TaskList = TaskList;
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{ utils } from '@neo-one/utils';\nimport { BehaviorSubject, combineLatest, Observable, ReplaySubject, Subscription } from 'rxjs';\nimport { map } from 'rxjs/operators';\nimport { getTaskError, getTasksError, isTaskDone } from './tasks';\nimport { TaskStatus } from './types';\n\n// tslint:disable-next-line no-any\nexport type TaskContext = any;\ntype SkipFn = (ctx: TaskContext) => string | boolean;\ntype EnabledFn = (ctx: TaskContext) => boolean;\ntype OnErrorFn = (error: Error, ctx: TaskContext) => void;\ntype OnDoneFn = (failed: boolean) => void;\n\nexport interface Task {\n  readonly skip?: SkipFn;\n  readonly enabled?: EnabledFn;\n  readonly task: (ctx: TaskContext) => Promise<void> | Promise<string> | Observable<string> | TaskList | void;\n  readonly title: string;\n}\n\nexport interface TaskListOptions {\n  readonly tasks: readonly Task[];\n  readonly concurrent?: boolean;\n  readonly onError?: OnErrorFn;\n  readonly onComplete?: () => void;\n  readonly onDone?: OnDoneFn;\n  readonly initialContext?: TaskContext;\n  readonly freshContext?: boolean;\n  readonly collapse?: boolean;\n}\n\nclass TaskWrapper {\n  public readonly status$: BehaviorSubject<TaskStatus | undefined>;\n  private readonly task: Task;\n  private readonly taskList: TaskList;\n  private readonly skip: SkipFn;\n  private readonly getEnabled: EnabledFn;\n  private mutableAborted: boolean;\n\n  public constructor({\n    task,\n    taskList,\n    collapse,\n  }: {\n    readonly task: Task;\n    readonly taskList: TaskList;\n    readonly collapse: boolean;\n  }) {\n    this.task = task;\n    this.taskList = taskList;\n    this.status$ = new BehaviorSubject<TaskStatus | undefined>({\n      id: task.title,\n      title: task.title,\n      collapse,\n    });\n\n    this.skip = task.skip === undefined ? (_ctx) => false : task.skip;\n    this.getEnabled = task.enabled === undefined ? (_ctx) => true : task.enabled;\n    this.mutableAborted = false;\n  }\n\n  public check(ctx: TaskContext): void {\n    if (this.enabled && !this.pending && !this.done && !this.getEnabled(ctx)) {\n      this.status$.next(undefined);\n    }\n  }\n\n  public get enabled(): boolean {\n    return this.status$.getValue() !== undefined;\n  }\n\n  public get pending(): boolean {\n    const status = this.status$.getValue();\n\n    return status !== undefined && status.pending === true;\n  }\n\n  public get done(): boolean {\n    const status = this.status$.getValue();\n\n    return status !== undefined && isTaskDone(status);\n  }\n\n  public get error(): string | undefined {\n    const status = this.status$.getValue();\n\n    return status === undefined ? undefined : getTaskError(status);\n  }\n\n  public abort(): void {\n    this.mutableAborted = true;\n    const status = this.status$.getValue();\n    if (status !== undefined) {\n      this.status$.next({ ...status, skipped: 'Aborted' });\n    }\n    this.status$.complete();\n  }\n\n  public complete(): void {\n    this.status$.complete();\n  }\n\n  public async run(ctx: TaskContext): Promise<void> {\n    const statusIn = this.status$.getValue();\n    if (statusIn === undefined) {\n      this.status$.complete();\n\n      return;\n    }\n    if (this.mutableAborted) {\n      return;\n    }\n\n    let status = { ...statusIn, pending: true };\n\n    const onError = (error: Error) => {\n      this.taskList.onError(error, ctx);\n      this.taskList.mutableSuperOnError(error);\n    };\n\n    try {\n      const skip = this.skip(ctx);\n      if (skip !== false) {\n        status = { ...status, pending: false, skipped: skip };\n        this.status$.next(status);\n      } else {\n        this.status$.next(status);\n\n        // tslint:disable-next-line rxjs-finnish\n        const result = this.task.task(ctx);\n\n        let error;\n        let message: string | undefined | void;\n        if (result instanceof Observable) {\n          await result\n            .pipe(\n              map((msg) => {\n                status = { ...status, message: msg };\n                this.status$.next(status);\n              }),\n            )\n            .toPromise();\n        } else if (result instanceof Promise) {\n          message = await result;\n        } else if (result instanceof TaskList) {\n          result.setSuperOnError(onError);\n          // tslint:disable-next-line no-floating-promises\n          result.run(ctx);\n          const finalSubtasks = await result.status$\n            .pipe(\n              map((subtasks) => {\n                status = { ...status, subtasks };\n                this.status$.next(status);\n\n                return subtasks;\n              }),\n            )\n            .toPromise();\n          error = getTasksError(finalSubtasks);\n        }\n\n        this.status$.next({\n          ...status,\n          pending: false,\n          complete: error === undefined,\n          message: message === undefined ? undefined : message,\n          error,\n        });\n      }\n    } catch (error) {\n      const message = error.stack == undefined ? error.message : error.stack;\n      this.status$.next({\n        ...status,\n        pending: false,\n        error: message == undefined || message === '' ? 'Something went wrong.' : message,\n      });\n\n      onError(error);\n    }\n\n    this.status$.complete();\n  }\n}\n\nexport class TaskList {\n  public mutableSuperOnError: (error: Error) => void;\n  public readonly onError: OnErrorFn;\n  private readonly tasks: readonly TaskWrapper[];\n  private readonly concurrent: boolean;\n  private readonly onComplete: () => void;\n  private readonly onDone: OnDoneFn;\n  private readonly initialContext: TaskContext;\n  private readonly freshContext: boolean;\n  private readonly statusInternal$: ReplaySubject<readonly TaskStatus[]>;\n  private mutableSubscription: Subscription | undefined;\n\n  public constructor({\n    tasks,\n    concurrent = false,\n    onError,\n    onComplete,\n    onDone,\n    initialContext = {},\n    freshContext = false,\n    collapse = true,\n  }: TaskListOptions) {\n    this.tasks = tasks.map(\n      (task) =>\n        new TaskWrapper({\n          task,\n          taskList: this,\n          collapse,\n        }),\n    );\n\n    this.concurrent = concurrent;\n    this.onError =\n      onError === undefined\n        ? (_error, _ctx) => {\n            // do nothing\n          }\n        : onError;\n    this.onComplete =\n      onComplete === undefined\n        ? () => {\n            // do nothing\n          }\n        : onComplete;\n    this.onDone =\n      onDone === undefined\n        ? (_failed) => {\n            // do nothing\n          }\n        : onDone;\n    this.initialContext = initialContext;\n    this.freshContext = freshContext;\n    this.mutableSuperOnError = (_error) => {\n      // do nothing\n    };\n\n    this.statusInternal$ = new ReplaySubject(1);\n  }\n\n  public get status$(): Observable<readonly TaskStatus[]> {\n    this.run().catch((error) => this.onError(error, {}));\n\n    return this.statusInternal$;\n  }\n\n  public async toPromise(): Promise<void> {\n    const result = await this.status$.toPromise();\n    const error = getTasksError(result);\n    if (error !== undefined) {\n      throw new Error(error);\n    }\n  }\n\n  public async abort(): Promise<void> {\n    await this.abort$().toPromise();\n  }\n\n  public abort$(): Observable<readonly TaskStatus[]> {\n    this.tasks.forEach((task) => task.abort());\n\n    return this.status$;\n  }\n\n  public setSuperOnError(onError: (error: Error) => void): void {\n    this.mutableSuperOnError = onError;\n  }\n\n  public async run(ctxIn: TaskContext = {}): Promise<void> {\n    if (this.mutableSubscription !== undefined) {\n      return;\n    }\n\n    const ctx = this.freshContext ? {} : ctxIn;\n    Object.entries(this.initialContext).forEach(([key, value]) => {\n      // tslint:disable-next-line no-object-mutation\n      ctx[key] = value;\n    });\n    this.checkAll(ctx);\n\n    this.mutableSubscription = combineLatest(this.tasks.map((task) => task.status$))\n      .pipe(map((statuses): readonly TaskStatus[] => statuses.filter(utils.notNull)))\n      .subscribe(this.statusInternal$);\n\n    await this.runTasks(ctx);\n    const err = getTasksError(this.tasks.map((task) => task.status$.getValue()).filter(utils.notNull));\n\n    if (err === undefined) {\n      this.onComplete();\n    }\n    this.onDone(err !== undefined);\n  }\n\n  private async runTasks(ctx: TaskContext): Promise<void> {\n    if (this.tasks.length === 0) {\n      this.statusInternal$.next([]);\n\n      return;\n    }\n\n    if (this.concurrent) {\n      await Promise.all(this.tasks.map(async (task) => task.run(ctx)));\n    } else {\n      let error: string | undefined;\n      // tslint:disable-next-line no-loop-statement\n      for (const task of this.tasks) {\n        if (error === undefined) {\n          await task.run(ctx);\n        } else {\n          task.complete();\n        }\n        error = task.error;\n      }\n    }\n  }\n\n  private checkAll(ctx: TaskContext): void {\n    this.tasks.forEach((task) => task.check(ctx));\n  }\n}\n"]}