我在Node中使用了PhoneGap Build API包。我將它上傳到了： https://github.com/germallon/phonegapbuildapi，我認為這是一個很有趣的試驗。 Build API是真的簡單，所以我認為我的代碼也將是非常簡單的。
首先，我開始閱讀它的API部分。它可以獲取到應用程序，圖標，下載的東西，等等。PhoneGap允許每次請求一個令牌或通過身份驗證信息。於是，我通過簡單地方式驗證每個請求，並且讓大部分的API邏輯都調用兩個通用函數:
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);
});
}
這裡doCall是核心函數,它解析API的路徑。所有的API都調用相同的基URL，所以我讓它更加簡單,只需要加上path。Node中調用HTTP比CF要復雜一些，因為它們是異步的，但也並不困難。你可能會猜想這段代碼裡發生了什麼。我打開一個請求，它會獲得到一個結果對象。結果對象有一個數據事件。我將數據追加到一個結果變量。這裡還有一個結束事件，在結束事件中我們可以用json解析結果變量，並發送成功的處理。
以下是一個獲得所有應用程序的例子：
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);
});
最後，讓Node應用程序使用它：
pgbuild = require("./pgbuild");
pgbuild.setUsername("[email protected]");
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);
});
我寫的大部分代碼都遵循API的這種格式 - 通過一個成功/失敗的來處理程序。
所以我說這些都是非常簡單的。我想我大概用了30分鐘左右閱讀API。然後我開始編寫API時碰壁了。為什麼？我想創建一個應用程序,允許你上傳的文件並定義新應用程序。你也可以將新應用程序指定在一個存儲庫，但我想先做好文件版本。(打電話給我一個貪吃的朋友)證明上傳文件在後面更加痛苦。沒有真正內置的支持核心的Node.js庫。谷歌搜索真的很困難，因為幾乎所有的結果是關於如何處理文件上傳,而不是文件上傳請求。
經過我一番瘋狂搜索,我發現這篇 文章。我在想這人的真正名字，但他(她)的關於頁面實際上並沒有說他(她)是誰。因此我決定這個人是……
……根據他(她)說的。我將他的一些邏輯寫進了我最終的代碼，雖然我對這種混合不是很滿意,但是它確實很管用。下面是一個調用示例:
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);
}
);
這是一個用PhoneGap新構建的網站。
有趣的是，浏覽器使JavaScript上傳文件比XHR2更加容易。如果你還沒有看到這一動作，請查看優秀的 HTML5 Rocks這篇文章。
下面我將整個pgbuild.js代碼貼出來：
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();
}
英文原文 , OSChina翻譯
