Added FollowLogs class

src/follow_logs.ts

@@ -0,0 +1,116 @@
+import { LineStream } from 'byline';
+import request = require('request');
+import { KubeConfig } from './config';
+
+interface FollowLogsOptions {
+    /**
+     * The container for which to stream logs. Defaults to only container if there is one container in the pod.
+     */
+    container?: string;
+
+    /**
+     * If set, the number of bytes to read from the server before terminating the log output. This may not display a
+     * complete final line of logging, and may return slightly more or slightly less than the specified limit.
+     */
+    limitBytes?: number;
+
+    /**
+     * If true, then the output is pretty printed.
+     */
+    pretty?: string;
+
+    /**
+     * Return previous terminated container logs. Defaults to false.
+     */
+    previous?: boolean;
+
+    /**
+     * A relative time in seconds before the current time from which to show logs. If this value precedes the time a
+     * pod was started, only logs since the pod start will be returned. If this value is in the future, no logs will
+     * be returned. Only one of sinceSeconds or sinceTime may be specified.
+     */
+    sinceSeconds?: number;
+
+    /**
+     * If set, the number of lines from the end of the logs to show. If not specified, logs are shown from the creation
+     * of the container or sinceSeconds or sinceTime
+     */
+    tailLines?: number;
+
+    /**
+     * If true, add an RFC3339 or RFC3339Nano timestamp at the beginning of every line of log output. Defaults to false.
+     */
+    timestamps?: boolean;
+}
+
+export class FollowLogs {
+    public config: KubeConfig;
+
+    public constructor(config: KubeConfig) {
+        this.config = config;
+    }
+
+    /**
+     * read log of the specified Pod
+     * @param name name of the Pod
+     * @param namespace object name and auth scope, such as for teams and projects
+     * @param {FollowLogsOptions} options
+     */
+    public followPodLog(
+        name: string,
+        namespace: string,
+        callback: (line: string) => void,
+        done: (err: any) => void,
+        options: FollowLogsOptions = {},
+    ): request.Request {
+        // verify required parameter 'name'
+        if (!name) {
+            throw new Error(
+                'Required parameter name was null or undefined when calling readNamespacedPodLog.',
+            );
+        }
+
+        // verify required parameter 'namespace'
+        if (!namespace) {
+            throw new Error(
+                'Required parameter namespace was null or undefined when calling readNamespacedPodLog.',
+            );
+        }
+
+        // Build URI
+        const cluster = this.config.getCurrentCluster();
+        if (!cluster) {
+            throw new Error('No currently active cluster');
+        }
+        const uri = cluster.server + `/api/v1/namespaces/${namespace}/pods/${name}/log`;
+
+        const requestOptions: request.Options = {
+            method: 'GET',
+            qs: {
+                ...options,
+                follow: true,
+            },
+            headers: {},
+            uri,
+            useQuerystring: true,
+            json: true,
+        };
+        this.config.applyToRequest(requestOptions);
+
+        const stream = new LineStream();
+        stream.on('data', (data) => {
+            callback(data.toString());
+        });
+
+        const req = request(requestOptions, (error, response, body) => {
+            if (error) {
+                done(error);
+            } else {
+                done(null);
+            }
+        });
+        req.pipe(stream);
+
+        return req;
+    }
+}