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https://github.com/shafreeck/cetcd
Cetcd is a C client library for etcd with full features support
https://github.com/shafreeck/cetcd
c etcd
Last synced: 2 days ago
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Cetcd is a C client library for etcd with full features support
- Host: GitHub
- URL: https://github.com/shafreeck/cetcd
- Owner: shafreeck
- License: apache-2.0
- Created: 2015-07-22T08:53:13.000Z (over 9 years ago)
- Default Branch: master
- Last Pushed: 2019-12-17T14:45:49.000Z (almost 5 years ago)
- Last Synced: 2023-03-11T09:12:39.037Z (over 1 year ago)
- Topics: c, etcd
- Language: C
- Homepage:
- Size: 115 KB
- Stars: 66
- Watchers: 10
- Forks: 37
- Open Issues: 11
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# Cetcd is a C client for etcd
[](LICENSE)
[](https://gitter.im/shafreeck/cetcd?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
[](https://waffle.io/shafreeck/cetcd)
[](https://app.wercker.com/project/bykey/cc417f5b6e093b4d0b962580a3d022cb)
**Table of Contents** *generated with [DocToc](https://github.com/thlorenz/doctoc)*
- [Cetcd is a C client for etcd](#cetcd-is-a-c-client-for-etcd)
- [Status](#status)
- [Features](#features)
- [Deps](#deps)
- [Install](#install)
- [Link](#link)
- [Examples](#examples)
- [Usage](#usage)
- [Create an array to store the etcd addresses](#create-an-array-to-store-the-etcd-addresses)
- [Init the cetcd_client](#init-the-cetcd_client)
- [Set a key](#set-a-key)
- [Get a key](#get-a-key)
- [List a directory](#list-a-directory)
- [Clean all resources](#clean-all-resources)
## Status
cetcd is on active development. It aims to be used in production environment and to supply full features of etcd.
**Any issues or pull requests are welcome!**
## Features
* Round-robin load balance and failover
* Full support for etcd keys space apis
* Multiple concurrent watchers support
## Deps
cetcd use [sds](https://github.com/antirez/sds) as a dynamic string utility. It is licensed in sds/LICENSE.
sds is interaged in cetcd's source code, so you don't have to install it before.
[yajl](https://github.com/lloyd/yajl) is a powerful json stream parsing libaray. We use the stream apis to
parse response from cetcd. It is already integrated as a third-party dependency, so you are not necessary to
install it before.
[curl](http://curl.haxx.se/download.html) is required to issue HTTP requests in cetcd
## Install
Install curl if needed
on Ubuntu
```
apt-get install libcurl4-openssl-dev
```
or on CentOS
```
yum install libcurl-devel
```
then
```
make
make install
```
It default installs to /usr/local.
Use
```
make install prefix=/path
```
to specify your custom path.
## Link
Use `-lcetcd` to link the library
## Examples
* [cetcd_get.c](examples/cetcd_get.c)
* [cetcd_lsdir.c](examples/cetcd_lsdir.c)
* [multi_watch.c](examples/multi_watch.c)
## Usage
cetcd_array is an expandable dynamic array. It is used to pass etcd cluster addresses, and return cetcd response nodes
### Create an array to store the etcd addresses
```
cetcd_array addrs;
cetcd_array_init(&addrs, 3);
cetcd_array_append(&addrs, "127.0.0.1:2379");
cetcd_array_append(&addrs, "127.0.0.1:2378");
cetcd_array_append(&addrs, "127.0.0.1:2377");
```
cetcd_client is a context cetcd uses to issue requests, you should init it with etcd addresses
### Init the cetcd_client
```
cetcd_client cli;
cetcd_client_init(&cli, &addrs);
```
Then you can issue an cetcd request which reply with an cetcd response
### Set a key
```
cetcd_response *resp;
resp = cetcd_set(&cli, "/service/redis", "hello cetcd", 0);
if(resp->err) {
printf("error :%d, %s (%s)\n", resp->err->ecode, resp->err->message, resp->err->cause);
}
cetcd_response_release(resp);
```
### Get a key
```
cetcd_response *resp;
resp = cetcd_get(&cli, "/service/redis");
if(resp->err) {
printf("error :%d, %s (%s)\n", resp->err->ecode, resp->err->message, resp->err->cause);
}
cetcd_response_release(resp);
```
### List a directory
```
cetcd_response *resp;
resp = cetcd_lsdir(&cli, "/service", 1, 1);
if(resp->err) {
printf("error :%d, %s (%s)\n", resp->err->ecode, resp->err->message, resp->err->cause);
}
cetcd_response_print(resp);
cetcd_response_release(resp);
```
### Clean all resources
```
cetcd_array_destory(&addrs);
cetcd_client_destroy(&cli);
```
See [examples/cetcdget.c](https://github.com/shafreeck/cetcd/blob/master/examples/cetcdget.c) for more detailes