Gitlab Webhooks, External Services, and API(二)

一. 使用webhooks

webhook 是一个API的概念，并且变得越来越流行。我们能用事件描述的事物越多，webhook的作用范围也就越大。webhook作为 个轻量的事件处理应用，正变得越来越有用。

准确的说webhook是一种web回调或者http的push API， 是向APP或者其它应用提供实时信息的一种方式。webhook在数据产生时立即发送数据，也就是我能实时收到数据。这一种不同于典型的API，需要用了实时性需要足够快的轮询。这无论是对生产还是对消费者都是高效的，唯一的缺点是初始建立困难。

webhook有时也被称为反加API， 因为他提供了API规则，你需要设计要使用的API。WEBHOOK将向你的应用发起http请求，典型的是post请求，应用程序由请求驱动。

1. 搭建要使用的到的服务器RequestBin.(此处我把服务器部署到docker上面的)

(1)刻隆代码

[root@c720120 ~]# git clone  git://github.com/Runscope/requestbin.git

Cloning into 'requestbin'...

remote: Counting objects: 636, done.

remote: Total 636 (delta 0), reused 0 (delta 0), pack-reused 636

Receiving objects: 100% (636/636), 652.55 KiB | 397.00 KiB/s, done.

Resolving deltas: 100% (304/304), done.

（2）进入到项目的目录，进行构建和启动容器。

[root@c720120 ~]# cd requestbin/

[root@c720120 requestbin]# docker-compose build

redis uses an image, skipping

Building app

Step 1/8 : FROM python:2.7-alpine

2.7-alpine: Pulling from library/python

ff3a5c916c92: Already exists

5556c6f99b85: Pull complete

93fbc81365bc: Pull complete

8780cd897032: Pull complete

Digest: sha256:cbc1c1c227012034793083306f6f6322e0276ca134c218cc49b131ca59df7699

Status: Downloaded newer image for python:2.7-alpine
  ---> a448d7554c75

Step 2/8 : RUN apk update && apk upgrade &&     apk add         gcc python python-dev py-pip         musl-dev         bsd-compat-headers         libevent-dev     && rm -rf /var/cache/apk/*
  ---> Running in e57172cecb26

fetch http://dl-cdn.alpinelinux.org/alpine/v3.7/main/x86_64/APKINDEX.tar.gz

fetch http://dl-cdn.alpinelinux.org/alpine/v3.7/community/x86_64/APKINDEX.tar.gz

v3.7.0-214-g519be0a2d1 [http://dl-cdn.alpinelinux.org/alpine/v3.7/main]

v3.7.0-207-gac61833f9b [http://dl-cdn.alpinelinux.org/alpine/v3.7/community]

OK: 9054 distinct packages available

Upgrading critical system libraries and apk-tools:

(1/1) Upgrading apk-tools (2.8.2-r0 -> 2.9.1-r2)

Executing busybox-1.27.2-r7.trigger

Continuing the upgrade transaction with new apk-tools:

fetch http://dl-cdn.alpinelinux.org/alpine/v3.7/main/x86_64/APKINDEX.tar.gz

fetch http://dl-cdn.alpinelinux.org/alpine/v3.7/community/x86_64/APKINDEX.tar.gz

(1/6) Upgrading libressl2.6-libcrypto (2.6.4-r2 -> 2.6.5-r0)

(2/6) Upgrading libressl2.6-libssl (2.6.4-r2 -> 2.6.5-r0)

(3/6) Upgrading busybox (1.27.2-r7 -> 1.27.2-r11)

Executing busybox-1.27.2-r11.post-upgrade

(4/6) Installing libressl2.6-libtls (2.6.5-r0)

(5/6) Installing ssl_client (1.27.2-r11)

(6/6) Upgrading freetype (2.8.1-r2 -> 2.8.1-r3)

Executing busybox-1.27.2-r11.trigger

Executing ca-certificates-20171114-r0.trigger

OK: 32 MiB in 43 packages

(1/21) Installing bsd-compat-headers (0.7.1-r0)

(2/21) Installing binutils-libs (2.30-r1)

(3/21) Installing binutils (2.30-r1)

(4/21) Installing gmp (6.1.2-r1)

(5/21) Installing isl (0.18-r0)

(6/21) Installing libgomp (6.4.0-r5)

(7/21) Installing libatomic (6.4.0-r5)

(8/21) Installing pkgconf (1.3.10-r0)

(9/21) Installing libgcc (6.4.0-r5)

(10/21) Installing mpfr3 (3.1.5-r1)

(11/21) Installing mpc1 (1.0.3-r1)

(12/21) Installing libstdc++ (6.4.0-r5)

(13/21) Installing gcc (6.4.0-r5)

(14/21) Installing libffi (3.2.1-r4)

(15/21) Installing python2 (2.7.14-r2)

(16/21) Installing libevent (2.1.8-r2)

(17/21) Installing libevent-dev (2.1.8-r2)

(18/21) Installing musl-dev (1.1.18-r3)

(19/21) Installing py-setuptools (33.1.1-r1)

(20/21) Installing py2-pip (9.0.1-r1)

(21/21) Installing python2-dev (2.7.14-r2)

Executing busybox-1.27.2-r11.trigger

OK: 185 MiB in 64 packages

Removing intermediate container e57172cecb26
  ---> bff0b149a3c4

Step 3/8 : ADD requirements.txt /opt/requestbin/
  ---> 40174275a7cb

Step 4/8 : RUN pip install -r /opt/requestbin/requirements.txt     && rm -rf ~/.pip/cache
  ---> Running in 1ecc38d40702

Collecting gevent==1.0.2 (from -r /opt/requestbin/requirements.txt (line 1))
   Downloading https://files.pythonhosted.org/packages/8a/71/9bb13513d39c513fa71344d57a11affd6ccad775575458f435ff9142daf5/gevent-1.0.2.tar.gz (1.7MB)

Collecting greenlet==0.4.1 (from -r /opt/requestbin/requirements.txt (line 2))
   Downloading https://files.pythonhosted.org/packages/c6/9a/dbb2c9acbde5f2f48e94b9eeacfda511373dfb5534aae8679c06d485419f/greenlet-0.4.1.zip (75kB)

Collecting ProxyTypes==0.9 (from -r /opt/requestbin/requirements.txt (line 3))
   Downloading https://files.pythonhosted.org/packages/72/bd/24f45710e7e6909b2129332363be2c981179ed2eda1166f18bc2baef98a1/ProxyTypes-0.9.zip

Collecting nose==1.3.0 (from -r /opt/requestbin/requirements.txt (line 4))
   Downloading https://files.pythonhosted.org/packages/de/f4/b205776cf5cbddbc1e2c3223fa29c0d05f18a9b8afad8cfa23438c217434/nose-1.3.0.tar.gz (404kB)

Requirement already satisfied: wsgiref==0.1.2 in /usr/local/lib/python2.7 (from -r /opt/requestbin/requirements.txt (line 5)) (0.1.2)

Collecting feedparser==5.1.3 (from -r /opt/requestbin/requirements.txt (line 6))
   Downloading https://files.pythonhosted.org/packages/eb/d7/143dc058551243c11f76e18117d3818135377049eaadc4edc30a3f34b1d3/feedparser-5.1.3.tar.bz2 (202kB)

Collecting Jinja2==2.7 (from -r /opt/requestbin/requirements.txt (line 7))
   Downloading https://files.pythonhosted.org/packages/33/db/9931c645626f9bf7867cc3c4225e7a8abf7aff37ecddb7e7d5df90a3b6c4/Jinja2-2.7.tar.gz (377kB)

Collecting Werkzeug==0.9.3 (from -r /opt/requestbin/requirements.txt (line 8))
   Downloading https://files.pythonhosted.org/packages/8d/3b/79b28e9436f321763bfa47d7784bedb8f0b6b7da92b2979ee5a2a60f3bc6/Werkzeug-0.9.3.tar.gz (1.1MB)

Collecting Flask==0.10.1 (from -r /opt/requestbin/requirements.txt (line 9))
   Downloading https://files.pythonhosted.org/packages/db/9c/149ba60c47d107f85fe52564133348458f093dd5e6b57a5b60ab9ac517bb/Flask-0.10.1.tar.gz (544kB)

Collecting Flask-Cors==3.0.2 (from -r /opt/requestbin/requirements.txt (line 10))
   Downloading https://files.pythonhosted.org/packages/4f/4f/ea10ca247c21b6512766cf730621697ec2766fb2f712245b2c00983a57b1/Flask_Cors-3.0.2-py2.py3-none-any.whl

Collecting redis==2.7.6 (from -r /opt/requestbin/requirements.txt (line 11))
   Downloading https://files.pythonhosted.org/packages/e7/6f/446e6d3cbb6f43d5f73de1be12cd8d033a6f4456ddd8a9dc4cdbd53b389f/redis-2.7.6.tar.gz (76kB)

Collecting msgpack-python==0.1.12 (from -r /opt/requestbin/requirements.txt (line 12))
   Downloading https://files.pythonhosted.org/packages/c0/0c/cc5e51b2f82ddee4ceb35e8bceed0545d0c5d2ee632a48a403e46a3495ec/msgpack-python-0.1.12.tar.gz (49kB)

Collecting python-dateutil==2.1 (from -r /opt/requestbin/requirements.txt (line 13))
   Downloading https://files.pythonhosted.org/packages/65/52/9c18dac21f174ad31b65e22d24297864a954e6fe65876eba3f5773d2da43/python-dateutil-2.1.tar.gz (152kB)

Collecting gunicorn (from -r /opt/requestbin/requirements.txt (line 14))
   Downloading https://files.pythonhosted.org/packages/55/cb/09fe80bddf30be86abfc06ccb1154f97d6c64bb87111de066a5fc9ccb937/gunicorn-19.8.1-py2.py3-none-any.whl (112kB)

Collecting bugsnag (from -r /opt/requestbin/requirements.txt (line 15))
   Downloading https://files.pythonhosted.org/packages/64/c5/141fb591b4a460dc169f6ab4a31bd8532bf72c2becf791beb7aa1669676e/bugsnag-3.4.2-py2-none-any.whl (41kB)

Collecting blinker (from -r /opt/requestbin/requirements.txt (line 16))
   Downloading https://files.pythonhosted.org/packages/1b/51/e2a9f3b757eb802f61dc1f2b09c8c99f6eb01cf06416c0671253536517b6/blinker-1.4.tar.gz (111kB)

Collecting markupsafe (from Jinja2==2.7->-r /opt/requestbin/requirements.txt (line 7))
   Downloading https://files.pythonhosted.org/packages/4d/de/32d741db316d8fdb7680822dd37001ef7a448255de9699ab4bfcbdf4172b/MarkupSafe-1.0.tar.gz

Collecting itsdangerous>=0.21 (from Flask==0.10.1->-r /opt/requestbin/requirements.txt (line 9))
   Downloading https://files.pythonhosted.org/packages/dc/b4/a60bcdba945c00f6d608d8975131ab3f25b22f2bcfe1dab221165194b2d4/itsdangerous-0.24.tar.gz (46kB)

Collecting Six (from Flask-Cors==3.0.2->-r /opt/requestbin/requirements.txt (line 10))
   Downloading https://files.pythonhosted.org/packages/67/4b/141a581104b1f6397bfa78ac9d43d8ad29a7ca43ea90a2d863fe3056e86a/six-1.11.0-py2.py3-none-any.whl

Collecting webob (from bugsnag->-r /opt/requestbin/requirements.txt (line 15))
   Downloading https://files.pythonhosted.org/packages/d2/df/9b3b374ea2a82b875a90d1fdcf2c4a652d48f0d1e7c2d1034d636551d4d2/WebOb-1.8.2-py2.py3-none-any.whl (115kB)

Building wheels for collected packages: gevent, greenlet, ProxyTypes, nose, feedparser, Jinja2, Werkzeug, Flask, redis, msgpack-python, python-dateutil, blinker, markupsafe, itsdangerous
   Running setup.py bdist_wheel for gevent: started
   Running setup.py bdist_wheel for gevent: still running...
   Running setup.py bdist_wheel for gevent: finished with status 'done'
   Stored in directory: /root/.cache/pip/wheels/bf/65/92/5950be5cabfc31ddba3d510e8ebbed6112aba18016472c4aec
   Running setup.py bdist_wheel for greenlet: started
   Running setup.py bdist_wheel for greenlet: finished with status 'done'
   Stored in directory: /root/.cache/pip/wheels/9b/00/8b/8064203a9e62f04e7ed1cf5cac6f3ddd695ab74353fd68f8b4
   Running setup.py bdist_wheel for ProxyTypes: started
   Running setup.py bdist_wheel for ProxyTypes: finished with status 'done'
   Stored in directory: /root/.cache/pip/wheels/c8/24/65/9797c6999f4d45b25de4d0f280d7ff0b12061eddd750fcc23c
   Running setup.py bdist_wheel for nose: started
   Running setup.py bdist_wheel for nose: finished with status 'done'
   Stored in directory: /root/.cache/pip/wheels/9e/23/4a/6d694db85896e8a420efb47a353b7001b2972768f07458f9ea
   Running setup.py bdist_wheel for feedparser: started
   Running setup.py bdist_wheel for feedparser: finished with status 'done'
   Stored in directory: /root/.cache/pip/wheels/7b/49/19/8199a0729fd8d58e4f3616d96a7a0e69581b2c046560b52608
   Running setup.py bdist_wheel for Jinja2: started
   Running setup.py bdist_wheel for Jinja2: finished with status 'done'
   Stored in directory: /root/.cache/pip/wheels/4d/66/ac/118b76f63c3443b318dc5ee1ba1e39335032305e96cd4dafa0
   Running setup.py bdist_wheel for Werkzeug: started
   Running setup.py bdist_wheel for Werkzeug: finished with status 'done'
   Stored in directory: /root/.cache/pip/wheels/e6/fb/6e/4b753478730a5478125485dc99821ff7f4a818ce3cf48abebf
   Running setup.py bdist_wheel for Flask: started
   Running setup.py bdist_wheel for Flask: finished with status 'done'
   Stored in directory: /root/.cache/pip/wheels/e1/f2/be/1c4f307a41aad7e632f79c0242a2714ecde24b663da3519665
   Running setup.py bdist_wheel for redis: started
   Running setup.py bdist_wheel for redis: finished with status 'done'
   Stored in directory: /root/.cache/pip/wheels/5b/67/92/70dbc6b8e4f01984adde8953dd6319542a7bfee09949d15be9
   Running setup.py bdist_wheel for msgpack-python: started
   Running setup.py bdist_wheel for msgpack-python: finished with status 'done'
   Stored in directory: /root/.cache/pip/wheels/94/52/11/ff262175c66991cdec599d3c90bba11ce5a0eab1aac008aa97
   Running setup.py bdist_wheel for python-dateutil: started
   Running setup.py bdist_wheel for python-dateutil: finished with status 'done'
   Stored in directory: /root/.cache/pip/wheels/a3/b4/9e/be446328c3728631f286e9cc832b8b00ca99480eefa1a6db4e
   Running setup.py bdist_wheel for blinker: started
   Running setup.py bdist_wheel for blinker: finished with status 'done'
   Stored in directory: /root/.cache/pip/wheels/92/a0/00/8690a57883956a301d91cf4ec999cc0b258b01e3f548f86e89
   Running setup.py bdist_wheel for markupsafe: started
   Running setup.py bdist_wheel for markupsafe: finished with status 'done'
   Stored in directory: /root/.cache/pip/wheels/33/56/20/ebe49a5c612fffe1c5a632146b16596f9e64676768661e4e46
   Running setup.py bdist_wheel for itsdangerous: started
   Running setup.py bdist_wheel for itsdangerous: finished with status 'done'
   Stored in directory: /root/.cache/pip/wheels/2c/4a/61/5599631c1554768c6290b08c02c72d7317910374ca602ff1e5

Successfully built gevent greenlet ProxyTypes nose feedparser Jinja2 Werkzeug Flask redis msgpack-python python-dateutil blinker markupsafe itsdangerous

gevent 1.0.2 has requirement greenlet>=0.4.7, but you'll have greenlet 0.4.1 which is incompatible.

Installing collected packages: greenlet, gevent, ProxyTypes, nose, feedparser, markupsafe, Jinja2, Werkzeug, itsdangerous, Flask, Six, Flask-Cors, redis, msgpack-python, python-dateutil, gunicorn, webob, bugsnag, blinker

Successfully installed Flask-0.10.1 Flask-Cors-3.0.2 Jinja2-2.7 ProxyTypes-0.9 Six-1.11.0 Werkzeug-0.9.3 blinker-1.4 bugsnag-3.4.2 feedparser-5.1.3 gevent-1.0.2 greenlet-0.4.1 gunicorn-19.8.1 itsdangerous-0.24 markupsafe-1.0 msgpack-python-0.1.12 nose-1.3.0 python-dateutil-2.1 redis-2.7.6 webob-1.8.2

Removing intermediate container 1ecc38d40702
  ---> 0288f2dee287

Step 5/8 : ADD requestbin  /opt/requestbin/requestbin/
  ---> d1996b2ee224

Step 6/8 : EXPOSE 8000
  ---> Running in b360b0050182

Removing intermediate container b360b0050182
  ---> 4a550b4ecbdc

Step 7/8 : WORKDIR /opt/requestbin

Removing intermediate container 416d34676426
  ---> 3d6af8d85ffa

Step 8/8 : CMD gunicorn -b 0.0.0.0:8000 --worker-class gevent --workers 2 --max-requests 1000 requestbin:app
  ---> Running in da2a42b95fca

Removing intermediate container da2a42b95fca
  ---> 8840f59e26d9

Successfully built 8840f59e26d9

Successfully tagged requestbin_app:latest

[root@c720120 requestbin]# docker-compose up -d

Creating requestbin_redis_1 ... done

Creating requestbin_app_1   ... done

（3）打开浏览器，打开如下图所示：

2. 执行步骤：

（1）. 作为项目的拥有者登陆GitLab服务器。

（2）. 进入到你想要打开webhook的项目。

（3）点击【Settings】-【Integrations】，打开如下画面。

（4）打开RequestsBin服务器，点击【Create a RequestBin】

（5）会打开如下画面，复制URL。

（6）把复制的URL粘贴如下。然后点击【Add webhook】