acelga-bus
Version:
An extensible typescript message bus with support for middlewares
70 lines • 2.84 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
class BulkDispatcher {
constructor(dispatcher, scheduler, pipelineFactory, errorLogger) {
this.dispatcher = dispatcher;
this.scheduler = scheduler;
this.pipelineFactory = pipelineFactory;
this.errorLogger = errorLogger;
}
on(eventType, callback) {
return this.dispatcher.on(eventType, callback);
}
onAny(callback) {
return this.dispatcher.onAny(callback);
}
trigger(events) {
return __awaiter(this, void 0, void 0, function* () {
try {
const plan = this.scheduler.schedule(events);
const pipelinesPromises = plan.plan.map(pipelinePlan => this.executePipelinePlan(pipelinePlan));
const results = yield this.mapPipelinePromises(pipelinesPromises);
const errors = this.getAllErrors(results);
if (errors.length) {
return Promise.reject(errors);
}
}
catch (error) {
return Promise.reject(error);
}
});
}
getAllErrors(results) {
const errors = [];
results.forEach(result => {
if (Array.isArray(result)) {
result.forEach(error => errors.push(error));
}
});
return errors;
}
executePipelinePlan(pipelinePlan) {
const pipeline = this.pipelineFactory(this.dispatcher);
if (pipelinePlan.preserveOrder)
return pipeline.executeStopOnError(pipelinePlan.payloads);
return pipeline.executeContinueOnError(pipelinePlan.payloads);
}
mapPipelinePromises(pipelines) {
const results = [];
const pipelinesPromises = pipelines.map((pipeline, index) => {
return pipeline
.then(result => results[index] = result)
.catch((error) => this.errorLogger(error));
});
return Promise.all(pipelinesPromises)
.then(() => results);
}
off(eventType, callback) {
this.dispatcher.off(eventType, callback);
}
}
exports.default = BulkDispatcher;
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