在 Node.js 中使用 PhoneGap Build API 包
openkk
12年前
昨天我在Node中使用了PhoneGap Build API包。我将它上传到了: https://github.com/germallon/phonegapbuildapi,我认为这是一个很有趣的试验。 Build API是真的简单,所以我认为我的代码也将是非常简单的。
首先,我开始阅读它的API部分。它可以获取到应用程序,图标,下载的东西,等等。PhoneGap允许每次请求一个令牌或通过身份验证信息。于是,我通过简单地方式验证每个请求,并且让大部分的API逻辑都调用两个通用函数:
function getConfig(path) { return { auth: username + ":" + password, host:"build.phonegap.com", port:"443", path:"/api/v1/"+path } } //I handle doing the config get, http, string contact, etc function doCall(path, success, fail) { var options = getConfig(path); var req = http.get(options, function(res) { var resultString = ""; res.on("data", function(c) { resultString+=c; }); res.on("end",function() { var result = JSON.parse(resultString); success(result); }); }).on("error", function(e) { if(fail) fail(e); }); }
这里doCall是核心函数,它解析API的路径。所有的API都调用相同的基URL,所以我让它更加简单,只需要加上path。Node中调用HTTP比CF要复杂一些,因为它们是异步的,但也并不困难。你可能会猜想这段代码里发生了什么。我打开一个请求,它会获得到一个结果对象。结果对象有一个数据事件。我将数据追加到一个结果变量。这里还有一个结束事件,在结束事件中我们可以用json解析结果变量,并发送成功的处理。
以下是一个获得所有应用程序的例子:
exports.getAllApps = function(success,fail) { doCall("apps", function(res) { if(res.error && res.error.length && fail) fail(res.error); else success(res.apps); },function(e) { if(fail) fail(e); });
最后,让Node应用程序使用它:
pgbuild = require("./pgbuild"); pgbuild.setUsername("ray@camdenfamily.com"); pgbuild.setPassword("isitmillertimeyet?"); //Test getting all the apps pgbuild.getAllApps(function(apps) { console.log("I got lots of apps! How many? "+apps.length); //console.dir(apps); }, function(e) { console.log("Oh snap, an error"); console.dir(e); });
我写的大部分代码都遵循API的这种格式 - 通过一个成功/失败的来处理程序。
所以我说这些都是非常简单的。我想我大概用了30分钟左右阅读API。然后我开始编写API时碰壁了。为什么?我想创建一个应用程序,允许你上传的文件并定义新应用程序。你也可以将新应用程序指定在一个存储库,但我想先做好文件版本。(打电话给我一个贪吃的朋友)证明上传文件在后面更加痛苦。没有真正内置的支持核心的Node.js库。谷歌搜索真的很困难,因为几乎所有的结果是关于如何处理文件上传,而不是文件上传请求。
经过我一番疯狂搜索,我发现这篇 文章。我在想这人的真正名字,但他(她)的关于页面实际上并没有说他(她)是谁。因此我决定这个人是……
……根据他(她)说的。我将他的一些逻辑写进了我最终的代码,虽然我对这种混合不是很满意,但是它确实很管用。下面是一个调用示例:
pgbuild.createApp({ title:"New App for Testing", create_method:"file", file:"./forupload/index.html" }, function(res) { console.log("Ok in making an app"); console.dir(res); }, function(e) { console.log("I got an error: "); console.dir(e); } );
这是一个用PhoneGap新构建的网站。
有趣的是,浏览器使JavaScript上传文件比XHR2更加容易。如果你还没有看到这一动作,请查看优秀的 HTML5 Rocks这篇文章。
下面我将整个pgbuild.js代码贴出来:
var http = require("https"); var fs = require("fs"); var path = require("path"); var username = ""; var password = ""; exports.setUsername = function(u) { username = u; } exports.setPassword = function(p) { password = p; } exports.createApp = function(options, success, fail) { var httpOptions = getConfig("apps"); httpOptions.method = "POST"; //Detect if options.create_method is file, and if so, suck in the bits //Fails if no .file //Also note it doesn't support .zip yet. if(options.create_method === "file") { if(!options.file) throw new Error("Must supply file value."); console.log("Need to read in a file:"+options.file); //Shell out for file uploads PreparePost(httpOptions,JSON.stringify(options), options.file, success); } else { //TODO } } exports.getAllApps = function(success,fail) { doCall("apps", function(res) { if(res.error && res.error.length && fail) fail(res.error); else success(res.apps); },function(e) { if(fail) fail(e); }); } exports.getApp = function(id, success, fail) { doCall("apps/"+id, function(res) { if(res.error && res.error.length && fail) fail(res.error); else success(res); },function(e) { if(fail) fail(e); }); } exports.getAppIcon = function(id, success, fail) { doCall("apps/"+id +"/icon", function(res) { if(res.error && res.error.length && fail) fail(res.error); else success(res.location); },function(e) { if(fail) fail(e); }); } //todo: Possibly validate platform? Should be: android,blackberry,ios,symbian,webos,winphone exports.getAppDownload = function(id, platform, success, fail) { doCall("apps/"+id +"/"+platform, function(res) { if(res.error && res.error.length && fail) fail(res.error); else success(res.location); },function(e) { if(fail) fail(e); }); } exports.getKeys = function() { var platform = ""; if(arguments.length == 1) { success = arguments[0]; } else if(arguments.length === 2) { success = arguments[0]; fail = arguments[1]; } else if(arguments.length == 3) { platform = arguments[0]; success = arguments[1]; fail = arguments[2]; } var path = "keys"; if(platform != "") path+="/"+platform; doCall(path, function(res) { if(res.error && res.error.length && fail) fail(res.error); else success(res.keys); },function(e) { if(fail) fail(e); }); } exports.getKey = function(platform, id, success, fail) { doCall("keys/"+platform +"/"+id, function(res) { if(res.error && res.error.length && fail) fail(res.error); else success(res); },function(e) { if(fail) fail(e); }); } function getConfig(path) { return { auth: username + ":" + password, host:"build.phonegap.com", port:"443", path:"/api/v1/"+path } } //I handle doing the config get, http, string contact, etc function doCall(path, success, fail) { var options = getConfig(path); var req = http.get(options, function(res) { var resultString = ""; res.on("data", function(c) { resultString+=c; }); res.on("end",function() { var result = JSON.parse(resultString); success(result); }); }).on("error", function(e) { if(fail) fail(e); }); } //CREDIT: http://onteria.wordpress.com/2011/05/30/multipartform-data-uploads-using-node-js-and-http-request/ //Note that I modified his code quite a bit //For file uploads function EncodeFieldPart(boundary,name,value) { var return_part = "--" + boundary + "\r\n"; return_part += "Content-Disposition: form-data; name=\"" + name + "\"\r\n\r\n"; return_part += value + "\r\n"; return return_part; } function EncodeFilePart(boundary,type,name,filename) { var return_part = "--" + boundary + "\r\n"; return_part += "Content-Disposition: form-data; name=\"" + name + "\"; filename=\"" + filename + "\"\r\n"; return_part += "Content-Type: " + type + "\r\n\r\n"; return return_part; } //I expect the config options, the JSON data string, and file path function PreparePost(httpOptions,data,file,success) { var boundary = Math.random(); var post_data = []; post_data.push(new Buffer(EncodeFieldPart(boundary, 'data', data), 'ascii')); post_data.push(new Buffer(EncodeFilePart(boundary, 'text/plain', 'file', path.basename(file)), 'ascii')); var contents = fs.readFileSync(file, "ascii"); post_data.push(new Buffer(contents, "utf8")); post_data.push(new Buffer("\r\n--" + boundary + "--"), 'ascii'); MakePost(httpOptions,post_data, boundary,success); } function MakePost(httpOptions,post_data, boundary,success) { var length = 0; for(var i = 0; i < post_data.length; i++) { length += post_data[i].length; } httpOptions.headers = { 'Content-Type' : 'multipart/form-data; boundary=' + boundary, 'Content-Length' : length }; var post_request = http.request(httpOptions, function(response){ response.setEncoding('utf8'); var res=""; response.on('data', function(chunk){ res+=chunk; }); response.on('end',function() { success(JSON.parse(res)); }); }); for (var i = 0; i < post_data.length; i++) { post_request.write(post_data[i]); } post_request.end(); }
原文地址