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1 #!/usr/bin/env bash
2 #
3 # Copyright (C) 2015 Aaron Ball <nullspoon@iohq.net>
4 #
5 # This program is free software: you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation, either version 3 of the License, or
8 # (at your option) any later version.
9 #
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
14 #
15 # You should have received a copy of the GNU General Public License
16 # along with this program. If not, see <http://www.gnu.org/licenses/>.
17 #
18
19
20 #
21 # == Description
22 #
23 # This script deploys the given bare git repo and branch to a working location.
24 # It decides what needs to be deployed based on the variables received from a
25 # git post-receive hook via STDIN.
26 #
27 # [STDIN]
28 # @param oldref SHA1 hash of commit being advanced from
29 # @param newref SHA1 hash of most recent git commit
30 # @param refname Git name for ref. This is used to derive the branch name
31 # commited to
32 #
33 # @param $1 Path to the base path to deploy to
34 #
35
36
37 #
38 # Sets up some handy variables for a git post-receive script to use.
39 #
40 # == Variables Provided
41 #
42 # REPOSITORY: Repository that was pushed to
43 # BRANCH: Name of the branch that was modified
44 # FILES_A: List of added files
45 # FILES_M: List of modified files
46 # FILES_D: List of deleted files
47 #
48 function enviro_setup {
49 oldrev=${1}
50 newrev=${2}
51 refname=${3}
52
53 # Repository containing the branch
54 export REPOSITORY=$(basename $(pwd))
55
56 # Name of the branch pushed to
57 export BRANCH=${refname##*/}
58
59 # Command to list files affected by this commit
60 file_cmd="git diff --name-status ${oldrev} ${newrev}"
61
62 # List of Added files
63 export FILES_A=$(${file_cmd} | grep '^A' | cut -d ' ' -f 2)
64 # List of Modified files
65 export FILES_M=$(${file_cmd} | grep '^M' | cut -d ' ' -f 2)
66 # List of Deleted files
67 export FILES_D=$(${file_cmd} | grep '^D' | cut -d ' ' -f 2)
68 # List of all files changed (added or modified) but not deleted
69 # Short for files_existing
70 export FILES_E=$(${file_cmd} | grep '^[AM]' | cut -d ' ' -f 2)
71 }
72
73
74 #
75 # Logging function for everything here
76 #
77 function log {
78 echo "$(date '+%s'): ${@}" >> ~/gitposthook.out
79 }
80
81
82 #
83 # Deploys a working copy of the given repo and branch to the specified location
84 #
85 # @param remote Bare remote to be deployed locally
86 # @param branch Branch to be deployed
87 # @param dest Destination location to deploy the working copy to
88 #
89 function deploy_cache {
90 remote=${1}
91 # Strip trailing / if one exists (this throws off our later parse of the path
92 # to get the name of the repo
93 if [[ ${remote:${#remote} - 1} == '/' ]]; then
94 remote=${remote:0:-1}
95 fi
96
97 branch=${2}
98 dest=${3}
99
100 repo=${remote##*/}
101 deploy=${dest}/${repo}/${branch}
102
103 if [[ -d ${deploy} ]]; then
104 log "Deleting ${deploy}"
105 rm -rf ${deploy}
106 fi
107
108 log "Deploying to ${deploy}"
109 mkdir -p ${deploy}
110 cd ${deploy}
111 log "Checkout branch ${branch}"
112 git clone -l -b ${branch} ${remote} ./
113 cd -
114 }
115
116
117 #
118 # Main function
119 #
120 function main {
121 # Read STDIN
122 read oldrev newrev refname
123 deploy_base="${1}"
124
125 # Set up global enviro variables that will be of use later
126 enviro_setup ${oldrev} ${newrev} ${refname}
127
128 log "Deployment triggered by ${newrev}"
129
130 # Deploy a working copy of the repo so we have something to work on
131 deploy_cache $(pwd) ${BRANCH} ${deploy_base}
132 }
133
134 main ${@}
135 #${oldrev} ${newrev} ${refname}
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