/usr/lib/nodejs/cradle.js is in libnode-cradle 0.5.5~20110308-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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require.paths.unshift(path.join(__dirname, 'cradle'));
var sys = require("sys"),
http = require("http"),
https = require("https"),
events = require('events'),
fs = require("fs"),
url = require('url'),
buffer = require('buffer');
var querystring = require('querystring');
var Args = require('vargs').Constructor;
var cradle = exports;
cradle.extend = require('response').extend;
cradle.Response = require('response').Response;
cradle.Cache = require('cache').Cache;
cradle.host = '127.0.0.1';
cradle.port = 5984;
cradle.auth = null;
cradle.options = {
cache: true,
raw: false,
timeout: 0,
secure: false,
headers: {}
};
cradle.setup = function (settings) {
this.host = settings.host;
this.auth = settings.auth;
this.port = parseInt(settings.port);
cradle.merge(this.options, settings);
return this;
};
var protocolPattern = /^(https?):\/\//;
cradle.Connection = function Connection(/* variable args */) {
var args = Array.prototype.slice.call(arguments),
host, port, remote, auth, options = {};
args.forEach(function (a) {
if (typeof(a) === 'number' || (typeof(a) === 'string' && /^\d{2,5}$/.test(a))) {
port = parseInt(a);
} else if (typeof(a) === 'object') {
options = a;
host = host || options.host;
port = port || options.port;
auth = options.auth;
} else {
host = a;
}
});
this.host = host || cradle.host;
this.port = port || cradle.port;
this.auth = auth || cradle.auth;
this.options = cradle.merge({}, cradle.options, options);
this.options.secure = this.options.secure || this.options.ssl;
if (protocolPattern.test(this.host)) {
this.protocol = this.host.match(protocolPattern)[1];
this.host = this.host.replace(protocolPattern, '');
}
if (this.protocol === 'https') this.options.secure = true;
if (this.auth && this.auth.user) { // Deprecation warning
console.log('Warning: "user" & "pass" parameters ignored. Use "username" & "password"');
}
if (this.options.ssl) { // Deprecation warning
console.log('Warning: "ssl" option is deprecated. Use "secure" instead.');
}
this.socket = (this.options.secure) ? https : http;
};
//
// Connection.rawRequest()
//
// This is a base wrapper around connections to CouchDB. Given that it handles
// *all* requests, including those for attachments, it knows nothing about
// JSON serialization and does not presuppose it is sending or receiving JSON
// content
//
cradle.Connection.prototype.rawRequest = function (method, path, options, data, headers) {
var promise = new(events.EventEmitter), request, that = this;
// HTTP Headers
headers = headers || {};
// Set HTTP Basic Auth
if (this.auth) {
headers['Authorization'] = "Basic " + new Buffer(this.auth.username + ':' + this.auth.password).toString('base64');
}
// Set client-wide headers
for (var h in this.options.headers) {
headers[h] = this.options.headers[h];
}
path = (path || '/').replace(/https?:\/\//, '').replace(/\/{2,}/g, '/');
if (path.charAt(0) !== '/') { path = '/' + path }
if (options) {
for (var k in options) {
if (typeof(options[k]) === 'boolean') {
options[k] = String(options[k]);
}
}
path += '?' + querystring.stringify(options);
}
request = this.socket.request({
host: this.host,
port: this.port,
method: method.toUpperCase(),
path: path,
headers: headers
});
if (data && data.on) { headers['Transfer-Encoding'] = 'chunked' }
headers['Connection'] = 'keep-alive';
request.on('response', function (res) {
promise.emit('response', res);
res.on('data', function (chunk) { promise.emit('data', chunk) });
res.on('end', function () { promise.emit('end') });
});
request.on('error', function (err) {
promise.emit('error', err);
promise.emit('end');
});
if (data) {
if (data.on) {
data.on('data', function (chunk) { request.write(chunk) });
data.on('end', function () { request.end() });
} else {
request.write(data, 'utf8');
request.end();
}
} else {
request.end();
}
return promise;
}
//
// Connection.request()
//
// This is the entry point for all requests to CouchDB, at this point,
// the database name has been embed in the url, by one of the wrappers.
//
cradle.Connection.prototype.request = function (method, path, /* [options], [data], [headers] */ callback) {
var request, that = this, args = Array.prototype.slice.call(arguments, 2);
if (typeof(callback = args.pop()) !== 'function') {
args.push(callback);
callback = function () {};
}
var options = args.shift() || {},
data = args.shift() || null,
headers = cradle.merge({ host: this.host }, args.shift() || {});
//
// Handle POST/PUT data. We also convert functions to strings,
// so they can be used in _design documents.
//
if (data) {
data = JSON.stringify(data, function (k, val) {
if (typeof(val) === 'function') {
return val.toString();
} else { return val }
});
headers["Content-Length"] = Buffer.byteLength(data);
headers["Content-Type"] = "application/json";
}
if (method === "DELETE" && headers["Content-Length"] === undefined) {
headers["Content-Length"] = 0;
}
request = this.rawRequest(method, path, options, data, headers);
//
// Initialize the request, send the body, and finally,
// dispatch the request.
//
request.on('response', function (res) {
var body = [];
res.setEncoding('utf8');
res.on('data', function (chunk) {
chunk && body.push(chunk);
}).on('end', function () {
var json, response;
if (method === 'HEAD') {
callback(null, res.headers, res.statusCode);
} else {
try { json = JSON.parse(body.join('')) }
catch (e) { return callback(e) }
if (json.error) {
cradle.extend(json, { headers: res.headers });
json.headers.status = res.statusCode;
callback(json);
} else {
// If the `raw` option was set, we return the parsed
// body as-is. If not, we wrap it in a `Response` object.
callback(null, that.options.raw ? json : new(cradle.Response)(json, res));
}
}
});
});
request.on('error', function(err) {
return callback(err);
});
};
//
// The database object
//
// We return an object with database functions,
// closing around the `name` argument.
//
cradle.Connection.prototype.database = function (name) {
var that = this, connection = this;
return {
name: name,
//
// The database document cache.
//
cache: new(cradle.Cache)(that.options),
// A wrapper around `Connection.request`,
// which prepends the database name.
query: function (method, path /* [options], [data], [headers], [callback] */) {
var args = Array.prototype.slice.call(arguments, 2);
that.request.apply(that, [method, [name, path].join('/')].concat(args));
},
exists: function (callback) {
this.query('HEAD', '/', function (err, res, status) {
if (err) {
callback(err);
} else {
if (status === 404) {
callback(null, false);
} else {
callback(null, true);
}
}
});
},
// Fetch either a single document from the database, or cache,
// or multiple documents from the database.
// If it's a single doc from the db, attempt to save it to the cache.
get: function (id, rev) {
var that = this, options = null,
args = new(Args)(arguments);
if (Array.isArray(id)) { // Bulk GET
this.query('POST', '/_all_docs', { include_docs: true }, { keys: id },
function (err, res) { args.callback(err, res) });
} else {
if (rev && args.length === 2) {
if (typeof(rev) === 'string') { options = { rev: rev } }
else if (typeof(rev) === 'object') { options = rev }
} else if (this.cache.has(id)) {
return args.callback(null, this.cache.get(id));
}
this.query('GET', id, options, function (err, res) {
if (! err) that.cache.save(res.id, res.json);
args.callback(err, res);
});
}
},
save: function (/* [id], [rev], doc | [doc, ...] */) {
var args = new(Args)(arguments),
array = args.all.slice(0), doc, id, rev;
if (Array.isArray(args.first)) {
doc = args.first;
} else {
doc = array.pop(),
id = array.shift(),
rev = array.shift();
}
this._save(id, rev, doc, args.callback);
},
_save: function (id, rev, doc, callback) {
var options = connection.options;
var document = {}, that = this;
// Bulk Insert
if (Array.isArray(doc)) {
document.docs = doc;
if (options.allOrNothing) { document.all_or_nothing = true }
this.query('POST', '/_bulk_docs', {}, document, callback);
} else {
// PUT a single document, with an id (Create or Update)
if (id) {
// Design document
if (/^_design\/(\w|%)+$/.test(id) && !('views' in doc)) {
document.language = "javascript";
document.views = doc;
} else {
document = doc;
}
// Try to set the '_rev' attribute of the document.
// If it wasn't passed, attempt to retrieve it from the cache.
rev && (document._rev = rev);
if (document._rev) {
this.put(id, document, callback);
} else if (this.cache.has(id)) {
document._rev = this.cache.get(id)._rev;
this.put(id, document, callback);
} else {
// Attempt to create a new document. If it fails,
// because an existing document with that _id exists (409),
// perform a HEAD, to get the _rev, and try to re-save.
this.put(id, document, function (e, res) {
if (e && e.headers.status === 409) { // Conflict
that.head(id, function (e, headers) {
document._rev = headers['etag'].slice(1, -1);
that.put(id, document, callback);
});
} else { callback(e, res) }
});
}
// POST a single document, without an id (Create)
} else {
this.post(doc, callback);
}
}
},
merge: function (/* [id], doc */) {
var args = Array.prototype.slice.call(arguments),
callback = args.pop(),
doc = args.pop(),
id = args.pop() || doc._id;
this._merge(id, doc, callback);
},
_merge: function (id, doc, callback) {
var that = this;
this.get(id, function (e, res) {
if (e) { return callback(e) }
doc = cradle.merge({}, res.json || res, doc);
that.save(id, res._rev, doc, callback);
});
},
//
// PUT a document, and write through cache
//
put: function (id, doc, callback) {
var cache = this.cache;
if (typeof(id) !== 'string') { throw new(TypeError)("id must be a string") }
this.query('PUT', id, null, doc, function (e, res) {
if (! e) { cache.save(id, cradle.merge({}, doc, { _rev: res.rev })) }
callback && callback(e, res);
});
},
//
// POST a document, and write through cache
//
post: function (doc, callback) {
var cache = this.cache;
this.query('POST', '/', null, doc, function (e, res) {
if (! e) { cache.save(res.id, cradle.merge({}, doc, { _rev: res.rev })) }
callback && callback(e, res);
});
},
//
// Perform a HEAD request
//
head: function (id, callback) {
this.query('HEAD', id, null, callback);
},
insert: function () {
throw new(Error)("`insert` is deprecated, use `save` instead");
},
replicate: function (target, options, callback) {
if (typeof(options) === 'function') { callback = options, options = {} }
that.replicate(cradle.merge({ source: name, target: target }, options), callback);
},
// Destroys a database with 'DELETE'
// we raise an exception if arguments were supplied,
// as we don't want users to confuse this function with `remove`.
destroy: function (callback) {
if (arguments.length > 1) {
throw new(Error)("destroy() doesn't take any additional arguments");
} else {
this.query('DELETE', '/', callback);
}
},
// Delete a document
// if the _rev wasn't supplied, we attempt to retrieve it from the
// cache. If the deletion was successful, we purge the cache.
remove: function (id, rev) {
var that = this, doc, args = new(Args)(arguments);
if (typeof(rev) !== 'string') {
if (doc = this.cache.get(id)) { rev = doc._rev }
else { throw new(Error)("rev needs to be supplied") }
}
this.query('DELETE', id, {rev: rev}, function (err, res) {
if (! err) { that.cache.purge(id) }
args.callback(err, res);
});
},
create: function (callback) {
this.query('PUT', '/', callback);
},
info: function (callback) {
this.query('GET', '/', callback);
},
all: function (options, callback) {
if (arguments.length === 1) { callback = options, options = {} }
this.query('GET', '/_all_docs', options, callback);
},
compact: function (design) {
var headers = {};
headers['Content-Type'] = "application/json";
this.query('POST', '/_compact' + (typeof(design) === 'string' ? '/' + design : ''),
{}, {}, headers, Args.last(arguments));
},
viewCleanup: function (callback) {
var headers = {};
headers['Content-Type'] = "application/json";
this.query('POST', '/_view_cleanup', {}, {}, headers, callback);
},
allBySeq: function (options) {
options = typeof(options) === 'object' ? options : {};
this.query('GET', '/_all_docs_by_seq', options, Args.last(arguments));
},
// Query a view, passing any options to the query string.
// Some query string parameters' values have to be JSON-encoded.
view: function (path, options) {
var args = new(Args)(arguments);
path = path.split('/');
path = ['_design', path[0], '_view', path[1]].join('/');
if (typeof(options) === 'object') {
['key', 'startkey', 'endkey'].forEach(function (k) {
if (k in options) { options[k] = JSON.stringify(options[k]) }
});
}
if (options && options.keys) {
this.query('POST', path, {}, options, args.callback);
} else {
this.query('GET', path, options, args.callback);
}
},
// Query a list, passing any options to the query string.
// Some query string parameters' values have to be JSON-encoded.
list: function (path, options) {
var args = new(Args)(arguments);
path = path.split('/');
if (typeof(options) === 'object') {
['key', 'startkey', 'endkey'].forEach(function (k) {
if (k in options) { options[k] = JSON.stringify(options[k]) }
});
}
this.query('GET', ['_design', path[0], '_list', path[1], path[2]].join('/'), options, args.callback);
},
update: function(path, id, options) {
var args = new(Args)(arguments);
path = path.split('/');
if (id) {
this.query('PUT', ['_design', path[0], '_update', path[1], id].join('/'), options, args.callback);
} else {
this.query('POST', ['_design', path[0], '_update', path[1]].join('/'), options, args.callback);
}
},
push: function (doc) {},
changes: function (options, callback) {
var promise = new(events.EventEmitter);
if (typeof(options) === 'function') { callback = options, options = {}; }
if (callback) {
this.query('GET', '_changes', options, callback);
} else {
options = options || {};
options.feed = options.feed || 'continuous';
options.heartbeat = options.heartbeat || 1000;
that.rawRequest('GET', [name, '_changes'].join('/'), options).on('response', function (res) {
var response = new(events.EventEmitter), buffer = [];
res.setEncoding('utf8');
response.statusCode = res.statusCode;
response.headers = res.headers;
promise.emit('response', response);
res.on('data', function (chunk) {
if (chunk.trim()) {
buffer.push(chunk);
if (chunk.indexOf('\n') !== -1) {
buffer.length && response.emit('data', JSON.parse(buffer.join('')));
buffer = [];
}
}
}).on('end', function () {
response.emit('end');
});
});
return promise;
}
},
saveAttachment: function (/* id, [rev], attachmentName, contentType, dataOrStream */) {
var doc, pathname, headers = {}, response, body = [], resHeaders, error, db = this;
var args = new(Args)(arguments), params = args.all;
if (typeof(args.first) === 'object') { throw new(TypeError)("first argument must be a document id") }
var id = params.shift(),
dataOrStream = params.pop(),
contentType = params.pop(),
attachmentName = params.pop(),
rev = params.pop();
if (!rev && db.cache.has(id)) {
doc = { rev: db.cache.get(id)._rev };
} else if (rev) {
doc = { rev: rev };
} else {
doc = {};
}
pathname = '/' + [name, id, attachmentName].join('/');
headers['Content-Type'] = contentType;
that.rawRequest('PUT', pathname, doc, dataOrStream, headers)
.on('response', function (res) { resHeaders = { status: res.statusCode } })
.on('data', function (chunk) { body.push(chunk) })
.on('end', function () {
response = JSON.parse(body.join(''));
response.headers = resHeaders;
if (response.headers.status == 201) {
if (db.cache.has(id)) {
cached = db.cache.store[id].document;
cached._rev = response.rev;
cached._attachments = cached._attachments || {};
cached._attachments[attachmentName] = { stub: true };
}
args.callback(null, response);
} else {
args.callback(response);
}
});
},
getAttachment: function(docId, attachmentName) {
var pathname, req;
pathname = '/' + [name, docId, attachmentName].join('/');
return that.rawRequest('GET', pathname);
},
temporaryView: function (doc, callback) {
this.query('POST', '_temp_view', null, doc, callback);
}
}
};
//
// Wrapper functions for the server API
//
cradle.Connection.prototype.databases = function (c) {
this.request('GET', '/_all_dbs', c);
};
cradle.Connection.prototype.config = function (c) {
this.request('GET', '/_config', c);
};
cradle.Connection.prototype.info = function (c) {
this.request('GET', '/', c);
};
cradle.Connection.prototype.stats = function (c) {
this.request('GET', '/_stats', c);
};
cradle.Connection.prototype.activeTasks = function (c) {
this.request('GET', '/_active_tasks', c);
};
cradle.Connection.prototype.uuids = function (count, callback) {
if (typeof(count) === 'function') { callback = count, count = null }
this.request('GET', '/_uuids', count ? {count: count} : {}, callback);
};
cradle.Connection.prototype.replicate = function (options, callback) {
this.request('POST', '/_replicate', null, options, callback);
};
cradle.merge = function (target) {
var objs = Array.prototype.slice.call(arguments, 1);
objs.forEach(function(o) {
Object.keys(o).forEach(function (attr) {
if (! o.__lookupGetter__(attr)) {
target[attr] = o[attr];
}
});
});
return target;
}
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