blob: 88cb7cc4c66144604e40016cf641d50cdda5aa66 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
#!/usr/bin/env bash
set -euo pipefail
shopt -s inherit_errexit
exec 3>&1 # New file descriptor to stdout
BASE_URL="https://dev.azure.com/\
python-discord/${SYSTEM_TEAMPROJECTID}/_apis/build/builds?\
queryOrder=finishTimeDescending&\
resultFilter=succeeded&\
\$top=1&\
repositoryType=${BUILD_REPOSITORY_PROVIDER}&\
repositoryId=${BUILD_REPOSITORY_NAME}&\
api-version=5.0"
declare -A build_cache
get_build() {
local branch="${1:?"get_build: argument 1 'branch' is unset"}"
# Attempt to use cached value
if [[ -v build_cache["${branch}"] ]]; then
printf '%s\n' "Retrieving build for ${branch} from cache." >&3
printf '%s' "${build_cache[$branch]}"
return 0
fi
local url="${BASE_URL}&branchName=${branch}"
printf '%s\n' "Retrieving the latest successful build using ${url}" >&3
local response
response="$(curl -sSL "${url}")"
if [[ -z "${response}" ]] \
|| ! count="$(printf '%s' "${response}" | jq -re '.count')" \
|| (( "${count}" < 1 ))
then
return 1
else
# Cache the response
build_cache["${branch}"]="${response}"
printf '%s' "${response}"
fi
}
can_pull() {
local image="${1:?"can_pull: argument 1 'image' is unset"}"
local master_commit
if master_commit="$(
get_build "refs/heads/master" \
| jq -re '.value[0].sourceVersion'
)" \
&& git diff --quiet "${master_commit}" -- "${@:2}"
then
printf \
'%s\n' \
"Can pull ${image} image from Docker Hub; no changes since master."
printf '%s\n' "##vso[task.setvariable variable=${image^^}_PULL]True"
else
printf \
'%s\n' \
"Cannot pull ${image} image from Docker Hub due to detected " \
"changes; the ${image} image will be built."
return 1
fi
}
# Get the previous commit
if [[ "${BUILD_REASON}" = "PullRequest" ]]; then
if ! prev_commit="$(
get_build "${BUILD_SOURCEBRANCH}" \
| jq -re '.value[0].triggerInfo."pr.sourceSha"'
)"
then
echo \
"Could not retrieve the previous build's commit." \
"Falling back to the head of the target branch."
prev_commit="origin/${SYSTEM_PULLREQUEST_TARGETBRANCH}"
fi
elif ! prev_commit="$(
get_build "${BUILD_SOURCEBRANCH}" \
| jq -re '.value[0].sourceVersion'
)"
then
echo \
"No previous build was found." \
"Either the previous build is too old and was deleted" \
"or the branch was empty before this build." \
"All images will be built."
exit 0
fi
# Compare diffs
head="$(git rev-parse HEAD)"
printf '%s\n' "Comparing HEAD (${head}) against ${prev_commit}."
if git diff --quiet "${prev_commit}" -- docker/base.Dockerfile; then
echo "No changes detected in docker/base.Dockerfile."
echo "##vso[task.setvariable variable=BASE_CHANGED]False"
else
# Always rebuild the venv if the base changes.
echo "Changes detected in docker/base.Dockerfile; all images will be built."
exit 0
fi
if git diff --quiet "${prev_commit}" -- docker/venv.Dockerfile Pipfile*; then
echo "No changes detected in docker/venv.Dockerfile or the Pipfiles."
echo "##vso[task.setvariable variable=VENV_CHANGED]False"
if ! can_pull venv docker/venv.Dockerfile Pipfile*; then
# Venv image can't be pulled so it needs to be built.
# Therefore, the base image is needed too.
can_pull base docker/base.Dockerfile || true
fi
else
echo \
"Changes detected in docker/venv.Dockerfile or the Pipfiles;" \
"the venv image will be built."
# Though base image hasn't changed, it's still needed to build the venv.
can_pull base docker/base.Dockerfile || true
fi
|
