From 6afa952475dc0cef512bd933cd5f475d091c3a6f Mon Sep 17 00:00:00 2001
From: Mike Brocchi <mbrocchi@gmail.com>
Date: Thu, 15 Mar 2018 12:51:56 -0400
Subject: [PATCH] fix(@angular/cli): Pass logger to allow schematics to log
 messages

fixes #9976
---
 packages/@angular/cli/commands/generate.ts   | 34 ++++++++++++++++++--
 packages/@angular/cli/tasks/schematic-run.ts |  6 ++--
 2 files changed, 36 insertions(+), 4 deletions(-)

diff --git a/packages/@angular/cli/commands/generate.ts b/packages/@angular/cli/commands/generate.ts
index 1c53e54866d7..83d02f47763a 100644
--- a/packages/@angular/cli/commands/generate.ts
+++ b/packages/@angular/cli/commands/generate.ts
@@ -2,6 +2,8 @@ import chalk from 'chalk';
 const stringUtils = require('ember-cli-string-utils');
 import { oneLine } from 'common-tags';
 import { CliConfig } from '../models/config';
+import { logging, terminal } from '@angular-devkit/core';
+import { filter } from 'rxjs/operators';
 
 import {
   getCollection,
@@ -199,12 +201,40 @@ export default Command.extend({
       commandOptions.type = rawArgs[2];
     }
 
+    const logger = new logging.IndentLogger('cling');
+    const loggerSubscription = logger.pipe(
+      filter(entry => (entry.level != 'debug')))
+      .subscribe(entry => {
+        let color = (x: any) => terminal.dim(terminal.white(x));
+        let output = process.stdout;
+        switch (entry.level) {
+          case 'info':
+            color = terminal.white;
+            break;
+          case 'warn':
+            color = terminal.yellow;
+            break;
+          case 'error':
+            color = terminal.red;
+            output = process.stderr;
+            break;
+          case 'fatal':
+            color = (x) => terminal.bold(terminal.red(x));
+            output = process.stderr;
+            break;
+        }
+
+        output.write(color(entry.message) + '\n');
+      });
+
     return schematicRunTask.run({
         taskOptions: commandOptions,
         workingDir: cwd,
         collectionName,
-        schematicName
-      });
+        schematicName,
+        logger: this.logger
+      })
+      .then(() => loggerSubscription.unsubscribe());
   },
 
   printDetailedHelp: function (_options: any, rawArgs: any): string | Promise<string> {
diff --git a/packages/@angular/cli/tasks/schematic-run.ts b/packages/@angular/cli/tasks/schematic-run.ts
index 5283ee30d294..ecb1d812bdd9 100644
--- a/packages/@angular/cli/tasks/schematic-run.ts
+++ b/packages/@angular/cli/tasks/schematic-run.ts
@@ -15,6 +15,7 @@ import chalk from 'chalk';
 import { CliConfig } from '../models/config';
 import { concat, concatMap, ignoreElements, map } from 'rxjs/operators';
 import { getCollection, getSchematic, getEngineHost, getEngine } from '../utilities/schematics';
+import { logging } from '@angular-devkit/core';
 
 const { green, red, yellow } = chalk;
 const Task = require('../ember-cli/lib/models/task');
@@ -25,6 +26,7 @@ export interface SchematicRunOptions {
   emptyHost: boolean;
   collectionName: string;
   schematicName: string;
+  logger: logging.Logger;
 }
 
 export interface SchematicOptions {
@@ -45,7 +47,7 @@ interface OutputLogging {
 
 export default Task.extend({
   run: function (options: SchematicRunOptions): Promise<SchematicOutput> {
-    const { taskOptions, workingDir, emptyHost, collectionName, schematicName } = options;
+    const { taskOptions, workingDir, emptyHost, collectionName, schematicName, logger } = options;
 
     const ui = this.ui;
 
@@ -125,7 +127,7 @@ export default Task.extend({
     });
 
     return new Promise((resolve, reject) => {
-      schematic.call(opts, host).pipe(
+      schematic.call(opts, host, { logger }).pipe(
         map((tree: Tree) => Tree.optimize(tree)),
         concatMap((tree: Tree) => {
           return dryRunSink.commit(tree).pipe(