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loopback-component-storage
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Add an example for asteroid remoting

This commit is contained in:
Raymond Feng 2013-07-02 18:10:23 -07:00
parent ad41d47b71
commit 4edfaae2de
4 changed files with 159 additions and 23 deletions
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33
README.md
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@ -8,10 +8,10 @@ Aseteroid Storage Service
The `asteroid-storage-service` service is designed to make it easy to upload and download files to various infrastructure providers. **_Special attention has been paid so that methods are streams and pipe-capable._**
To get started with a `asteroid-storage-service` client just create one:
To get started with a `asteroid-storage-service` provider just create one:
``` js
var client = require('asteroid-storage-service').createClient({
var storageService = require('asteroid-storage-service')({
//
// The name of the provider (e.g. "file")
//
@ -33,18 +33,18 @@ Each instance of `storage.Client` returned from `storage.createClient` has a set
<a name="container"></a>
### Container
* `client.getContainers(function (err, containers) { })`
* `client.createContainer(options, function (err, container) { })`
* `client.destroyContainer(containerName, function (err) { })`
* `client.getContainer(containerName, function (err, container) { })`
* `storageService.getContainers(function (err, containers) { })`
* `storageService.createContainer(options, function (err, container) { })`
* `storageService.destroyContainer(containerName, function (err) { })`
* `storageService.getContainer(containerName, function (err, container) { })`
<a name="file"></a>
### File
* `client.upload(options, function (err) { })`
* `client.download(options, function (err) { })`
* `client.getFiles(container, function (err, files) { })`
* `client.getFile(container, file, function (err, server) { })`
* `client.removeFile(container, file, function (err) { })`
* `storageService.upload(options, function (err) { })`
* `storageService.download(options, function (err) { })`
* `storageService.getFiles(container, function (err, files) { })`
* `storageService.getFile(container, file, function (err, server) { })`
* `storageService.removeFile(container, file, function (err) { })`
Both the `.upload(options)` and `.download(options)` have had **careful attention paid to make sure they are pipe and stream capable:**
@ -53,12 +53,9 @@ Both the `.upload(options)` and `.download(options)` have had **careful attentio
var storage = require('asteroid-storage-service'),
fs = require('fs');
var client = storage.createClient({ /* ... */ });
var storageService = storage({ /* ... */ });
fs.createReadStream('a-file.txt').pipe(client.upload({
container: 'a-container',
remote: 'remote-file-name.txt'
}));
fs.createReadStream('a-file.txt').pipe(storageService.uploadStream('a-container','remote-file-name.txt'));
```
### Download a File
@ -66,9 +63,9 @@ Both the `.upload(options)` and `.download(options)` have had **careful attentio
var storage = require('asteroid-storage-service'),
fs = require('fs');
var client = storage.createClient({ /* ... */ });
var storageService = storage({ /* ... */ });
client.download({
storageService.downloadStream({
container: 'a-container',
remote: 'remote-file-name.txt'
}).pipe(fs.createWriteStream('a-file.txt'));

73
example/app-asteroid.js Normal file
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@ -0,0 +1,73 @@
var asteroid = require('asteroid')
, app = module.exports = asteroid();
var StorageService = require('../');
// expose a rest api
app.use(asteroid.rest());
app.configure(function () {
app.set('port', process.env.PORT || 3000);
});
var handler = new StorageService({provider: 'filesystem', root: '/tmp/storage'});
app.service('storage', handler);
app.get('/', function (req, res, next) {
res.setHeader('Content-Type', 'text/html');
var form = "<html><body><h1>Storage Service Demo</h1>" +
"<a href='/download'>List all containers</a><p>" +
"Upload to container c1: <p>" +
"<form method='POST' enctype='multipart/form-data' action='/upload/c1'>"
+ "File to upload: <input type=file name=uploadedFiles multiple=true><br>"
+ "Notes about the file: <input type=text name=note><br>"
+ "<input type=submit value=Upload></form>" +
"</body></html>";
res.send(form);
res.end();
});
app.post('/upload/:container', function (req, res, next) {
handler.upload(req, res, function (err, result) {
if (!err) {
res.setHeader('Content-Type', 'application/json');
res.send(200, result);
} else {
res.send(500, err);
}
});
});
app.get('/download', function (req, res, next) {
handler.getContainers(function (err, containers) {
var html = "<html><body><h1>Containers</h1><ul>";
containers.forEach(function (f) {
html += "<li><a href='/download/" + f.name + "'>" + f.name + "</a></li>"
});
html += "</ul><p><a href='/'>Home</a></p></body></html>";
res.send(200, html);
});
});
app.get('/download/:container', function (req, res, next) {
handler.getFiles(req.params.container, function (err, files) {
var html = "<html><body><h1>Files in container " + req.params.container + "</h1><ul>";
files.forEach(function (f) {
html += "<li><a href='/download/" + f.container + "/" + f.name + "'>" + f.container + "/" + f.name + "</a></li>"
});
html += "</ul><p><a href='/'>Home</a></p></body></html>";
res.send(200, html);
});
});
app.get('/download/:container/:file', function (req, res, next) {
handler.download(req, res, function (err, result) {
if (err) {
res.send(500, err);
}
});
});
app.listen(app.get('port'));
console.log('http://127.0.0.1:' + app.get('port'));

75
lib/index.js
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@ -42,8 +42,8 @@ StorageService.prototype.uploadStream = function (container, file, options, cb)
options = {};
}
options = options || {};
options.container = container;
options.remote = file;
if(container) options.container = container;
if(file) options.remote = file;
return this.provider.upload(options, cb);
}
@ -54,8 +54,8 @@ StorageService.prototype.downloadStream = function (container, file, options, cb
options = {};
}
options = options || {};
options.container = container;
options.remote = file;
if(container) options.container = container;
if(file) options.remote = file;
return this.provider.download(options, cb);
}
@ -78,4 +78,69 @@ StorageService.prototype.upload = function (req, res, cb) {
StorageService.prototype.download = function (req, res, cb) {
return handler.download(this.provider, req, res, cb);
}
}
StorageService.modelName = 'storage';
StorageService.prototype.getContainers.shared = true;
StorageService.prototype.getContainers.accepts = [];
StorageService.prototype.getContainers.returns = {arg: 'containers', type: 'array'};
StorageService.prototype.getContainers.http = [
{verb: 'get', path: '/'}
];
StorageService.prototype.getContainer.shared = true;
StorageService.prototype.getContainer.accepts = [{arg: 'container', type: 'string'}];
StorageService.prototype.getContainer.returns = {arg: 'container', type: 'object'};
StorageService.prototype.getContainer.http = [
{verb: 'get', path: '/:container'}
];
StorageService.prototype.createContainer.shared = true;
StorageService.prototype.createContainer.accepts = [{arg: 'options', type: 'object'}];
StorageService.prototype.createContainer.returns = {arg: 'container', type: 'object'};
StorageService.prototype.createContainer.http = [
{verb: 'post', path: '/'}
];
StorageService.prototype.destroyContainer.shared = true;
StorageService.prototype.destroyContainer.accepts = [{arg: 'container', type: 'string'}];
StorageService.prototype.destroyContainer.returns = {};
StorageService.prototype.destroyContainer.http = [
{verb: 'delete', path: '/:container'}
];
StorageService.prototype.getFiles.shared = true;
StorageService.prototype.getFiles.accepts = [{arg: 'container', type: 'string'}];
StorageService.prototype.getFiles.returns = {arg: 'files', type: 'array'};
StorageService.prototype.getFiles.http = [
{verb: 'get', path: '/:container/files'}
];
StorageService.prototype.getFile.shared = true;
StorageService.prototype.getFile.accepts = [{arg: 'container', type: 'string'}, {arg: 'file', type: 'string'}];
StorageService.prototype.getFile.returns = {arg: 'file', type: 'object'};
StorageService.prototype.getFile.http = [
{verb: 'get', path: '/:container/files/:file'}
];
StorageService.prototype.removeFile.shared = true;
StorageService.prototype.removeFile.accepts = [{arg: 'container', type: 'string'}, {arg: 'file', type: 'string'}];
StorageService.prototype.removeFile.returns = {};
StorageService.prototype.removeFile.http = [
{verb: 'delete', path: '/:container/files/:file'}
];
StorageService.prototype.upload.shared = true;
StorageService.prototype.upload.accepts = [{arg: 'file', type: 'object', 'http': {source: 'req'}}];
StorageService.prototype.upload.returns = {arg: 'description', type: 'object'};
StorageService.prototype.upload.http = [
{verb: 'post', path: '/:container/upload/:file'}
];
StorageService.prototype.download.shared = true;
StorageService.prototype.download.accepts = [{arg: 'file', type: 'object', 'http': {source: 'req'}}];
StorageService.prototype.download.returns = {arg: 'body', type: 'object'};
StorageService.prototype.download.http = [
{verb: 'get', path: '/:container/download/:file'}
];

1
package.json
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@ -12,6 +12,7 @@
},
"devDependencies": {
"express": "latest",
"asteroid": "git+ssh://git@github.com/strongloop/asteroid.git",
"formidable": "latest",
"mocha": "latest",
"supertest": "latest"