Merge pull request kubernetes-client#703 from Legion2/log-error

Replace callback with promise in Log

Author: k8s-ci-robot

examples/follow-logs.js

@@ -13,11 +13,11 @@ logStream.on('data', (chunk) => {
 	process.stdout.write(chunk);
 });
 
-log.log('default', 'pod1', 'container1', logStream, (err) => {console.log(err)}, {follow: true, tailLines: 50, pretty: false, timestamps: false})
+log.log('default', 'pod1', 'container1', logStream, {follow: true, tailLines: 50, pretty: false, timestamps: false})
+.catch(err => {console.log(err)})
 .then(req => {
 	// disconnects after 5 seconds
 	setTimeout(function(){
 		req.abort();
 	}, 5000);
 });
-

src/log.ts

@@ -1,7 +1,7 @@
-import request = require('request');
+import * as request from 'request';
 import { Writable } from 'stream';
-
 import { KubeConfig } from './config';
+import { HttpError, ObjectSerializer } from './gen/api';
 
 export interface LogOptions {
     /**
@@ -51,14 +51,37 @@ export class Log {
         this.config = config;
     }
 
+    public async log(
+        namespace: string,
+        podName: string,
+        containerName: string,
+        stream: Writable,
+        options?: LogOptions,
+    ): Promise<request.Request>;
+    /** @deprecated done callback is deprecated */
     public async log(
         namespace: string,
         podName: string,
         containerName: string,
         stream: Writable,
         done: (err: any) => void,
-        options: LogOptions = {},
+        options?: LogOptions,
+    ): Promise<request.Request>;
+    public async log(
+        namespace: string,
+        podName: string,
+        containerName: string,
+        stream: Writable,
+        doneOrOptions?: ((err: any) => void) | LogOptions,
+        options?: LogOptions,
     ): Promise<request.Request> {
+        let done: (err: any) => void = () => undefined;
+        if (typeof doneOrOptions === 'function') {
+            done = doneOrOptions;
+        } else {
+            options = doneOrOptions;
+        }
+
         const path = `/api/v1/namespaces/${namespace}/pods/${podName}/log`;
 
         const cluster = this.config.getCurrentCluster();
@@ -77,20 +100,24 @@ export class Log {
         };
         await this.config.applyToRequest(requestOptions);
 
-        const req = request(requestOptions, (error, response, body) => {
-            if (error) {
-                done(error);
-            } else if (response && response.statusCode !== 200) {
-                done(body);
-            } else {
-                done(null);
-            }
-        }).on('response', (response) => {
-            if (response.statusCode === 200) {
-                req.pipe(stream);
-            }
+        return new Promise((resolve, reject) => {
+            const req = request(requestOptions, (error, response, body) => {
+                if (error) {
+                    reject(error);
+                    done(error);
+                } else if (response.statusCode !== 200) {
+                    const deserializedBody = ObjectSerializer.deserialize(JSON.parse(body), 'V1Status');
+                    reject(new HttpError(response, deserializedBody, response.statusCode));
+                    done(body);
+                } else {
+                    done(null);
+                }
+            }).on('response', (response) => {
+                if (response.statusCode === 200) {
+                    req.pipe(stream);
+                    resolve(req);
+                }
+            });
         });
-
-        return req;
     }
 }