A nodejs library for etcd, written in coffee-script.
$ npm install node-etcd
For the older etcd v1 api, please use the 0.6.x branch
# Older version for v1 API:
$ npm install node-etcd@0.6.1
- 2.0.10 - Fix error in documentation
- 2.0.9 - Added .post() alias of .create(). Added .compareAndDelete() (for etcd v0.3.0)
- 2.0.8 - Watchers can be canceled. In-order keys using #create(). Raw requests using #raw().
- 2.0.7 - Avoid calling callback if callback not given.
- 2.0.6 - Refactoring, fix responsehandler error.
- 2.0.5 - Undo use of 'x-etcd-index', this refers to global state.
- 2.0.4 - Use 'x-etcd-index' for index when watching a key.
- 2.0.3 - Watcher supports options. Watcher emits etcd action type.
- 2.0.2 - Mkdir and rmdir. Fix watcher for v2 api.
- 2.0.1 - Watch, delete and stats now use new v2 api. Added testAndSet convenience method.
- 2.0.0 - Basic support for etcd protocol v2. set, get, del now supports options.
- 0.6.1 - Fixes issue #10, missing response caused error when server connection failed / server responded incorrectly.
- 0.6.0 - Watcher now emits 'error' on invalid responses.
Etcd = require('node-etcd');
etcd = new Etcd();
etcd.set("key", "value");
etcd.get("key", console.log);
Create a new etcd client
etcd = new Etcd();
etcd = new Etcd('127.0.0.1', '4001');
Set key to value, or create key/directory.
etcd.set("key");
etcd.set("key", "value");
etcd.set("key", "value", console.log);
etcd.set("key", "value", { ttl: 60 }, console.log);
Available options include:
ttl
(time to live in seconds)prevValue
(previous value, for compare and swap)prevExist
(existance test, for compare and swap)prevIndex
(previous index, for compare and swap)
Will create a directory when used without value (value=null): etcd.set("directory/");
Convenience method for test and set (set with {prevValue: oldvalue})
etcd.compareAndSwap("key", "newvalue", "oldvalue");
etcd.compareAndSwap("key", "newValue", "oldValue", options, console.log);
Alias: .testAndSet()
Get a key or path.
etcd.get("key", console.log);
etcd.get("key", { recursive: true }, console.log);
Available options include:
recursive
(bool, list all values in directory recursively)wait
(bool, wait for changes to key)waitIndex
(wait for changes after given index)
Delete a key or path
etcd.del("key");
etcd.del("key", console.log);
etcd.del("key/", { recursive: true }, console.log);
Available options include:
recursive
(bool, delete recursively)
Alias: .delete()
Convenience method for test and delete (delete with {prevValue: oldvalue})
etcd.compareAndDelete("key", "oldvalue");
etcd.compareAndDelete("key", "oldValue", options, console.log);
Alias: .testAndDelete()
Create a directory
etcd.mkdir("dir");
etcd.mkdir("dir", console.log);
etcd.mkdir("dir/", options, console.log);
Remove a directory
etcd.rmdir("dir");
etcd.rmdir("dir", console.log);
etcd.rmdir("dir/", { recursive: true }, console.log);
Available options include:
recursive
(bool, delete recursively)
Atomically create in-order keys.
etcd.create("queue", "first")
etcd.create("queue", "next", console.log)
Alias: .post()
This is a convenience method for get with {wait: true}
.
etcd.watch("key");
etcd.watch("key", console.log);
This is a convenience method for get with {wait: true, waitIndex: index}
.
etcd.watchIndex("key", 7, console.log);
Returns an eventemitter for watching for changes on a key
watcher = etcd.watcher("key");
watcher.on("change", console.log);
watcher2 = etcd.watcher("key", null, {recursive: true});
watcher2.on("error", console.log);
You can cancel a watcher by calling .stop()
.
Signals:
change
- emitted on value changereconnect
- emitted on reconnecterror
- emitted on invalid content<etcd action>
- the etcd action that triggered the watcher (ex: set, delete).stop
- watcher was canceled.
Bypass the API and do raw queries. Method must be one of: PUT, GET, POST, PATCH, DELETE
etcd.raw("GET", "v2/stats/leader", null, {}, callback)
etcd.raw("PUT", "v2/keys/key", "value", {}, callback)
Remember to provide the full path, without any leading '/'
Returns information about etcd nodes in the cluster
etcd.machines(console.log);
Return the leader in the cluster
etcd.leader(console.log);
Return statistics about cluster leader
etcd.leaderStats(console.log);
Return statistics about connected etcd node
etcd.selfStats(console.log);
Pass etcdclient a dictionary containing ssl options, check out http://nodejs.org/api/https.html#https_https_request_options_callback
fs = require('fs');
sslopts = {
ca: [ fs.readFileSync('ca.pem') ],
cert: fs.readFileSync('cert.pem'),
key: fs.readFileSync('key.pem')
};
etcdssl = new Etcd('localhost', '4001', sslopts);