Add initial addons rest apis

src/routes/addons.js

@@ -0,0 +1,125 @@
+'use strict';
+
+exports = module.exports = {
+    getAll: getAll,
+    get: get,
+    getLogs: getLogs,
+    getLogStream: getLogStream,
+    start: start,
+    stop: stop
+};
+
+var addons = require('../addons.js'),
+    AddonsError = addons.AddonsError,
+    assert = require('assert'),
+    debug = require('debug')('box:routes/addons');
+
+function getAll(req, res, next) {
+    addons.getAddons(function (error, result) {
+        if (error) return next(new HttpError(500, error));
+        next(new HttpSuccess(200, { addons: result }));
+    });
+}
+
+function get(req, res, next) {
+    assert.strictEqual(typeof req.params.addon, 'string');
+
+    addons.getStatus(req.params.addon, function (error, result) {
+        if (error && error.reason === AddonsError.NOT_FOUND) return next(new HttpError(404, 'No such addon'));
+        if (error) return next(new HttpError(500, error));
+
+        next(new HttpSuccess(200, { addon: result }));
+    });
+}
+
+function getLogs(req, res, next) {
+    assert.strictEqual(typeof req.params.addon, 'string');
+
+    var lines = req.query.lines ? parseInt(req.query.lines, 10) : 100;
+    if (isNaN(lines)) return next(new HttpError(400, 'lines must be a number'));
+
+    debug(`Getting logs of addon ${req.params.addon}`);
+
+    var options = {
+        lines: lines,
+        follow: false,
+        format: req.query.format
+    };
+
+    addons.getLogs(req.params.addon, options, function (error, logStream) {
+        if (error && error.reason === AddonsError.NOT_FOUND) return next(new HttpError(404, 'No such addon'));
+        if (error) return next(new HttpError(500, error));
+
+        res.writeHead(200, {
+            'Content-Type': 'application/x-logs',
+            'Content-Disposition': 'attachment; filename="log.txt"',
+            'Cache-Control': 'no-cache',
+            'X-Accel-Buffering': 'no' // disable nginx buffering
+        });
+        logStream.pipe(res);
+    });
+}
+
+// this route is for streaming logs
+function getLogStream(req, res, next) {
+    assert.strictEqual(typeof req.params.addon, 'string');
+
+    debug(`Getting logstream of addon ${req.params.addon}`);
+
+    var lines = req.query.lines ? parseInt(req.query.lines, 10) : -10; // we ignore last-event-id
+    if (isNaN(lines)) return next(new HttpError(400, 'lines must be a valid number'));
+
+    function sse(id, data) { return 'id: ' + id + '\ndata: ' + data + '\n\n'; }
+
+    if (req.headers.accept !== 'text/event-stream') return next(new HttpError(400, 'This API call requires EventStream'));
+
+    var options = {
+        lines: lines,
+        follow: true
+    };
+
+    addons.getLogs(req.params.addon, options, function (error, logStream) {
+        if (error && error.reason === AddonsError.NOT_FOUND) return next(new HttpError(404, 'No such addon'));
+        if (error) return next(new HttpError(500, error));
+
+        res.writeHead(200, {
+            'Content-Type': 'text/event-stream',
+            'Cache-Control': 'no-cache',
+            'Connection': 'keep-alive',
+            'X-Accel-Buffering': 'no', // disable nginx buffering
+            'Access-Control-Allow-Origin': '*'
+        });
+        res.write('retry: 3000\n');
+        res.on('close', logStream.close);
+        logStream.on('data', function (data) {
+            var obj = JSON.parse(data);
+            res.write(sse(obj.monotonicTimestamp, JSON.stringify(obj))); // send timestamp as id
+        });
+        logStream.on('end', res.end.bind(res));
+        logStream.on('error', res.end.bind(res, null));
+    });
+}
+
+function start(req, res, next) {
+    assert.strictEqual(typeof req.params.addon, 'string');
+
+    debug(`Starting addon ${req.params.addon}`);
+
+    addons.startAddon(req.params.addon, function (error) {
+        if (error) return next(new HttpError(500, error));
+
+        next(new HttpSuccess(202, {}));
+    });
+}
+
+function stop(req, res, next) {
+    assert.strictEqual(typeof req.params.addon, 'string');
+
+    debug(`Stopping addon ${req.params.addon}`);
+
+    addons.stopAddon(req.params.addon, function (error) {
+        if (error) return next(new HttpError(500, error));
+
+        next(new HttpSuccess(202, {}));
+    });
+}