etcd

Description:

etcd

A client library for connecting to and interacting with ETCD, a distributed, reliable key-value store for the most critical data of a distributed system
Usage #
Create a client:
var client = new EtcdClient('etcd.example.com', port: 2379, options: new ChannelOptions(credentials: ChannelCredentials.insecure()));
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Fetch a value:
var currentValue = await client.kv.fetch('myKey');
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Set/Update a value:
await client.kv.put('myKey', 'myValue');
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Attach a lease to a value:
var lease = await client.lease.grant(Duration(seconds: 5));
await client.kv.put('myKey', 'myValue', lease: lease.id);
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Check remaining time on a lease:
var remainingTTL = await client.lease.timeToLive(lease.id, listKeys: true);
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Renew a lease:
await lease.keepAlive();
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Revoke a lease (and the values its attached to):
await client.lease.revoke(lease.id);
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Watch a value for changes:
var watcher = await client.watch.single(KEY, prevKv: true);
watcher.listen((EtcdWatchEvent event) {
switch (event.type) {
case EtcdWatchEventType.PUT:
print('Key `${event.kv.key}` modified: replaced value `${event.prevKv.value}` with `${event.kv.value}`');
break;

case EtcdWatchEventType.DELETE:
print('Key `${event.kv.key}` was deleted: deleted value was `${event.prevKv.value}`');
break;
}
});
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Features and bugs #
For now, please file feature requests and bugs by emailing the author