actions/paths-filter
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Code Issues Projects Releases Packages Wiki Activity Actions

Improve change detection for feature branches (#16)

Browse source 
* Detect changes against configured base branch

* Update README and action.yml

* Add job.outputs example

* Update CHANGELOG
This commit is contained in:
Michal Dorner 2020-06-24 21:53:31 +02:00 • committed by GitHub
parent 7d201829e2
commit 83deb9f037
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GPG key ID: 4AEE18F83AFDEB23
8 changed files with 202 additions and 35 deletions
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75
dist/index.js vendored
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@ -3798,21 +3798,23 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, ge
});
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.getChangedFiles = exports.fetchCommit = void 0;
exports.trimRefsHeads = exports.trimRefs = exports.isTagRef = exports.getChangedFiles = exports.fetchCommit = exports.FETCH_HEAD = exports.NULL_SHA = void 0;
const exec_1 = __webpack_require__(986);
function fetchCommit(sha) {
exports.NULL_SHA = '0000000000000000000000000000000000000000';
exports.FETCH_HEAD = 'FETCH_HEAD';
function fetchCommit(ref) {
return __awaiter(this, void 0, void 0, function* () {
const exitCode = yield exec_1.exec('git', ['fetch', '--depth=1', 'origin', sha]);
const exitCode = yield exec_1.exec('git', ['fetch', '--depth=1', '--no-tags', 'origin', ref]);
if (exitCode !== 0) {
throw new Error(`Fetching commit ${sha} failed`);
throw new Error(`Fetching ${ref} failed`);
}
});
}
exports.fetchCommit = fetchCommit;
function getChangedFiles(sha) {
function getChangedFiles(ref) {
return __awaiter(this, void 0, void 0, function* () {
let output = '';
const exitCode = yield exec_1.exec('git', ['diff-index', '--name-only', sha], {
const exitCode = yield exec_1.exec('git', ['diff-index', '--name-only', ref], {
listeners: {
stdout: (data) => (output += data.toString())
}
@ -3827,6 +3829,22 @@ function getChangedFiles(sha) {
});
}
exports.getChangedFiles = getChangedFiles;
function isTagRef(ref) {
return ref.startsWith('refs/tags/');
}
exports.isTagRef = isTagRef;
function trimRefs(ref) {
return trimStart(ref, 'refs/');
}
exports.trimRefs = trimRefs;
function trimRefsHeads(ref) {
const trimRef = trimStart(ref, 'refs/');
return trimStart(trimRef, 'heads/');
}
exports.trimRefsHeads = trimRefsHeads;
function trimStart(ref, start) {
return ref.startsWith(start) ? ref.substr(start.length) : ref;
}
/***/ }),
@ -4487,9 +4505,18 @@ function run() {
const filtersYaml = isPathInput(filtersInput) ? getConfigFileContent(filtersInput) : filtersInput;
const filter = new filter_1.default(filtersYaml);
const files = yield getChangedFiles(token);
const result = filter.match(files);
for (const key in result) {
core.setOutput(key, String(result[key]));
if (files === null) {
// Change detection was not possible
// Set all filter keys to true (i.e. changed)
for (const key in filter.rules) {
core.setOutput(key, String(true));
}
}
else {
const result = filter.match(files);
for (const key in result) {
core.setOutput(key, String(result[key]));
}
}
}
catch (error) {
@ -4516,20 +4543,40 @@ function getChangedFiles(token) {
return token ? yield getChangedFilesFromApi(token, pr) : yield getChangedFilesFromGit(pr.base.sha);
}
else if (github.context.eventName === 'push') {
const push = github.context.payload;
return yield getChangedFilesFromGit(push.before);
return getChangedFilesFromPush();
}
else {
throw new Error('This action can be triggered only by pull_request or push event');
}
});
}
function getChangedFilesFromPush() {
return __awaiter(this, void 0, void 0, function* () {
const push = github.context.payload;
// No change detection for pushed tags
if (git.isTagRef(push.ref))
return null;
// Get base from input or use repo default branch.
// It it starts with 'refs/', it will be trimmed (git fetch refs/heads/<NAME> doesn't work)
const baseInput = git.trimRefs(core.getInput('base', { required: false }) || push.repository.default_branch);
// If base references same branch it was pushed to, we will do comparison against the previously pushed commit.
// Otherwise changes are detected against the base reference
const base = git.trimRefsHeads(baseInput) === git.trimRefsHeads(push.ref) ? push.before : baseInput;
// There is no previous commit for comparison
// e.g. change detection against previous commit of just pushed new branch
if (base === git.NULL_SHA)
return null;
return yield getChangedFilesFromGit(base);
});
}
// Fetch base branch and use `git diff` to determine changed files
function getChangedFilesFromGit(sha) {
function getChangedFilesFromGit(ref) {
return __awaiter(this, void 0, void 0, function* () {
core.debug('Fetching base branch and using `git diff-index` to determine changed files');
yield git.fetchCommit(sha);
return yield git.getChangedFiles(sha);
yield git.fetchCommit(ref);
// FETCH_HEAD will always point to the just fetched commit
// No matter if ref is SHA, branch or tag name or full git ref
return yield git.getChangedFiles(git.FETCH_HEAD);
});
}
// Uses github REST api to get list of files changed in PR