@ngx-grpc/core
Version:
Angular gRPC framework: core package
114 lines • 17.6 kB
JavaScript
import { Inject, Injectable, InjectionToken, Optional } from '@angular/core';
import { GrpcDataEvent } from '@ngx-grpc/common';
import { isObservable } from 'rxjs';
import { tap } from 'rxjs/operators';
import * as i0 from "@angular/core";
/**
* A configuration for GrpcLoggerInterceptor
*
* Example:
*
* ```
* providers: [
* { provide: GRPC_LOGGER_SETTINGS, useValue: { enabled: true } },
* ]
* ```
*
* or more complex:
*
* ```
* providers: [
* { provide: GRPC_LOGGER_SETTINGS, useFactory: () => { enabled: localStorage.getItem('GRPC_LOGGER_SETTINGS') === 'true' || !environment.prod } },
* ]
* ```
*/
export const GRPC_LOGGER_SETTINGS = new InjectionToken('GRPC_LOGGER_SETTINGS');
/**
* Interceptor that implements logging of every request to the browser console
*
* Can be enabled / disabled by GRPC_LOGGER_ENABLED injection token
*/
export class GrpcLoggerInterceptor {
constructor(settings = {}) {
this.clientDataStyle = 'color: #eb0edc;';
this.dataStyle = 'color: #5c7ced;';
this.errorStyle = 'color: #f00505;';
this.statusOkStyle = 'color: #0ffcf5;';
this.settings = {
enabled: settings.enabled ?? true,
logClientSettings: settings.logClientSettings ?? true,
logMetadata: settings.logMetadata ?? true,
logStatusCodeOk: settings.logStatusCodeOk ?? false,
requestMapper: settings.requestMapper ?? ((msg) => msg.toObject()),
responseMapper: settings.responseMapper ?? ((msg) => msg.toObject()),
};
}
intercept(request, next) {
if (this.settings.enabled) {
const id = ++GrpcLoggerInterceptor.requestId;
const start = Date.now();
// check if client streaming, then push each value separately
if (isObservable(request.requestData)) {
request.requestData = request.requestData.pipe(tap(msg => {
console.groupCollapsed(`%c#${id}: ${Date.now() - start}ms -> ${request.path}`, this.clientDataStyle);
console.log('%c>>', this.clientDataStyle, this.settings.requestMapper(msg));
console.groupEnd();
}));
}
// handle unary calls and server streaming in the same manner
return next.handle(request).pipe(tap(event => {
const style = event instanceof GrpcDataEvent ? this.dataStyle : event.statusCode !== 0 ? this.errorStyle : this.statusOkStyle;
const openGroup = () => console.groupCollapsed(`%c#${id}: ${Date.now() - start}ms -> ${request.path}`, style);
const printSettings = () => {
if (this.settings.logClientSettings) {
console.log('%csc', style, request.client.getSettings());
}
};
const printMetadata = () => {
if (this.settings.logMetadata) {
console.log('%c**', style, request.requestMetadata.toObject());
}
};
const printRequest = () => console.log('%c>>', style, isObservable(request.requestData) ? '<see above>' : this.settings.requestMapper(request.requestData));
const closeGroup = () => console.groupEnd();
if (event instanceof GrpcDataEvent) {
openGroup();
printSettings();
printRequest();
printMetadata();
console.log('%c<<', style, this.settings.responseMapper(event.data));
closeGroup();
}
else if (event.statusCode !== 0) {
openGroup();
printSettings();
printRequest();
printMetadata();
console.log('%c<<', style, event);
closeGroup();
}
else if (event.statusCode === 0 && this.settings.logStatusCodeOk) {
openGroup();
printSettings();
printRequest();
printMetadata();
console.log('%c<<', style, event);
closeGroup();
}
}));
}
return next.handle(request);
}
}
GrpcLoggerInterceptor.requestId = 0;
GrpcLoggerInterceptor.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "13.2.3", ngImport: i0, type: GrpcLoggerInterceptor, deps: [{ token: GRPC_LOGGER_SETTINGS, optional: true }], target: i0.ɵɵFactoryTarget.Injectable });
GrpcLoggerInterceptor.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "13.2.3", ngImport: i0, type: GrpcLoggerInterceptor });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "13.2.3", ngImport: i0, type: GrpcLoggerInterceptor, decorators: [{
type: Injectable
}], ctorParameters: function () { return [{ type: undefined, decorators: [{
type: Optional
}, {
type: Inject,
args: [GRPC_LOGGER_SETTINGS]
}] }]; } });
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{ Inject, Injectable, InjectionToken, Optional } from '@angular/core';\nimport { GrpcDataEvent, GrpcEvent, GrpcMessage, GrpcRequest } from '@ngx-grpc/common';\nimport { isObservable, Observable, of } from 'rxjs';\nimport { share, tap } from 'rxjs/operators';\nimport { GrpcHandler } from './grpc-handler';\nimport { GrpcInterceptor } from './grpc-interceptor';\n\n/**\n * A configuration for GrpcLoggerInterceptor\n *\n * Example:\n *\n * ```\n * providers: [\n *   { provide: GRPC_LOGGER_SETTINGS, useValue: { enabled: true } },\n * ]\n * ```\n *\n * or more complex:\n *\n * ```\n * providers: [\n *   { provide: GRPC_LOGGER_SETTINGS, useFactory: () => { enabled: localStorage.getItem('GRPC_LOGGER_SETTINGS') === 'true' || !environment.prod } },\n * ]\n * ```\n */\nexport const GRPC_LOGGER_SETTINGS = new InjectionToken('GRPC_LOGGER_SETTINGS');\n\n\n/**\n * A configuration definition for GrpcLoggerInterceptor\n */\nexport interface GrpcLoggerSettings {\n  /**\n   * Enables / disables the output, default true\n   */\n  enabled?: boolean;\n  /**\n   * Includes client settings into the logs, default true\n   */\n  logClientSettings?: boolean;\n  /**\n   * Includes request metadata into the logs, default true\n   */\n  logMetadata?: boolean;\n  /**\n   * Logs events with status code OK (0), default false\n   */\n  logStatusCodeOk?: boolean;\n  /**\n   * Request mapper function, defines what output is generated for the given message.\n   * The default implementation is `(msg) => msg.toObject()`.\n   * According to your preferences you might choose e.g. `(msg) => msg.toProtobufJSON()` instead.\n   */\n  requestMapper?: (msg: GrpcMessage) => any;\n  /**\n   * Response mapper function, defines what output is generated for the given message.\n   * The default implementation is `(msg) => msg.toObject()`.\n   * According to your preferences you might choose e.g. `(msg) => msg.toProtobufJSON()` instead.\n   */\n  responseMapper?: (msg: GrpcMessage) => any;\n}\n\n/**\n * Interceptor that implements logging of every request to the browser console\n *\n * Can be enabled / disabled by GRPC_LOGGER_ENABLED injection token\n */\n@Injectable()\nexport class GrpcLoggerInterceptor implements GrpcInterceptor {\n\n  private static requestId = 0;\n\n  private clientDataStyle = 'color: #eb0edc;';\n  private dataStyle = 'color: #5c7ced;';\n  private errorStyle = 'color: #f00505;';\n  private statusOkStyle = 'color: #0ffcf5;';\n\n  private settings: GrpcLoggerSettings;\n\n  constructor(@Optional() @Inject(GRPC_LOGGER_SETTINGS) settings: GrpcLoggerSettings = {}) {\n    this.settings = {\n      enabled: settings.enabled ?? true,\n      logClientSettings: settings.logClientSettings ?? true,\n      logMetadata: settings.logMetadata ?? true,\n      logStatusCodeOk: settings.logStatusCodeOk ?? false,\n      requestMapper: settings.requestMapper ?? ((msg: GrpcMessage) => msg.toObject()),\n      responseMapper: settings.responseMapper ?? ((msg: GrpcMessage) => msg.toObject()),\n    };\n  }\n\n  intercept<Q extends GrpcMessage, S extends GrpcMessage>(request: GrpcRequest<Q, S>, next: GrpcHandler): Observable<GrpcEvent<S>> {\n    if (this.settings.enabled) {\n      const id = ++GrpcLoggerInterceptor.requestId;\n      const start = Date.now();\n\n      // check if client streaming, then push each value separately\n      if (isObservable(request.requestData)) {\n        request.requestData = request.requestData.pipe(\n          tap(msg => {\n            console.groupCollapsed(`%c#${id}: ${Date.now() - start}ms -> ${request.path}`, this.clientDataStyle);\n            console.log('%c>>', this.clientDataStyle, this.settings.requestMapper(msg));\n            console.groupEnd();\n          }),\n        );\n      }\n\n      // handle unary calls and server streaming in the same manner\n      return next.handle(request).pipe(\n        tap(event => {\n          const style = event instanceof GrpcDataEvent ? this.dataStyle : event.statusCode !== 0 ? this.errorStyle : this.statusOkStyle;\n\n          const openGroup = () => console.groupCollapsed(`%c#${id}: ${Date.now() - start}ms -> ${request.path}`, style);\n\n          const printSettings = () => {\n            if (this.settings.logClientSettings) {\n              console.log('%csc', style, request.client.getSettings());\n            }\n          };\n\n          const printMetadata = () => {\n            if (this.settings.logMetadata) {\n              console.log('%c**', style, request.requestMetadata.toObject());\n            }\n          };\n\n          const printRequest = () => console.log('%c>>', style, isObservable(request.requestData) ? '<see above>' : this.settings.requestMapper(request.requestData));\n\n          const closeGroup = () => console.groupEnd();\n\n          if (event instanceof GrpcDataEvent) {\n            openGroup();\n            printSettings();\n            printRequest();\n            printMetadata();\n            console.log('%c<<', style, this.settings.responseMapper(event.data));\n            closeGroup();\n          } else if (event.statusCode !== 0) {\n            openGroup();\n            printSettings();\n            printRequest();\n            printMetadata();\n            console.log('%c<<', style, event);\n            closeGroup();\n          } else if (event.statusCode === 0 && this.settings.logStatusCodeOk) {\n            openGroup();\n            printSettings();\n            printRequest();\n            printMetadata();\n            console.log('%c<<', style, event);\n            closeGroup();\n          }\n        }),\n      );\n    }\n\n    return next.handle(request);\n  }\n\n}\n"]}