Fetch all history for all tags and branches when fetch-depth=0 (#258)

1 files changed, 116 insertions, 19 deletions

diff --git a/dist/index.js b/dist/index.js
index 86601d1..0c78d25 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -3383,6 +3383,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
 const url_1 = __webpack_require__(835);
 const core = __importStar(__webpack_require__(470));
 const github = __importStar(__webpack_require__(469));
+exports.tagsRefSpec = '+refs/tags/*:refs/tags/*';
 function getCheckoutInfo(git, ref, commit) {
     return __awaiter(this, void 0, void 0, function* () {
         if (!git) {
@@ -3429,6 +3430,15 @@ function getCheckoutInfo(git, ref, commit) {
     });
 }
 exports.getCheckoutInfo = getCheckoutInfo;
+function getRefSpecForAllHistory(ref, commit) {
+    const result = ['+refs/heads/*:refs/remotes/origin/*', exports.tagsRefSpec];
+    if (ref && ref.toUpperCase().startsWith('REFS/PULL/')) {
+        const branch = ref.substring('refs/pull/'.length);
+        result.push(`+${commit || ref}:refs/remotes/pull/${branch}`);
+    }
+    return result;
+}
+exports.getRefSpecForAllHistory = getRefSpecForAllHistory;
 function getRefSpec(ref, commit) {
     if (!ref && !commit) {
         throw new Error('Args ref and commit cannot both be empty');
@@ -3478,6 +3488,50 @@ function getRefSpec(ref, commit) {
     }
 }
 exports.getRefSpec = getRefSpec;
+/**
+ * Tests whether the initial fetch created the ref at the expected commit
+ */
+function testRef(git, ref, commit) {
+    return __awaiter(this, void 0, void 0, function* () {
+        if (!git) {
+            throw new Error('Arg git cannot be empty');
+        }
+        if (!ref && !commit) {
+            throw new Error('Args ref and commit cannot both be empty');
+        }
+        // No SHA? Nothing to test
+        if (!commit) {
+            return true;
+        }
+        // SHA only?
+        else if (!ref) {
+            return yield git.shaExists(commit);
+        }
+        const upperRef = ref.toUpperCase();
+        // refs/heads/
+        if (upperRef.startsWith('REFS/HEADS/')) {
+            const branch = ref.substring('refs/heads/'.length);
+            return ((yield git.branchExists(true, `origin/${branch}`)) &&
+                commit === (yield git.revParse(`refs/remotes/origin/${branch}`)));
+        }
+        // refs/pull/
+        else if (upperRef.startsWith('REFS/PULL/')) {
+            // Assume matches because fetched using the commit
+            return true;
+        }
+        // refs/tags/
+        else if (upperRef.startsWith('REFS/TAGS/')) {
+            const tagName = ref.substring('refs/tags/'.length);
+            return ((yield git.tagExists(tagName)) && commit === (yield git.revParse(ref)));
+        }
+        // Unexpected
+        else {
+            core.debug(`Unexpected ref format '${ref}' when testing ref info`);
+            return true;
+        }
+    });
+}
+exports.testRef = testRef;
 function checkCommitInfo(token, commitInfo, repositoryOwner, repositoryName, ref, commit) {
     return __awaiter(this, void 0, void 0, function* () {
         try {
@@ -5634,6 +5688,7 @@ const exec = __importStar(__webpack_require__(986));
 const fshelper = __importStar(__webpack_require__(618));
 const io = __importStar(__webpack_require__(1));
 const path = __importStar(__webpack_require__(622));
+const refHelper = __importStar(__webpack_require__(227));
 const regexpHelper = __importStar(__webpack_require__(528));
 const retryHelper = __importStar(__webpack_require__(587));
 const git_version_1 = __webpack_require__(559);
@@ -5749,18 +5804,14 @@ class GitCommandManager {
             return output.exitCode === 0;
         });
     }
-    fetch(fetchDepth, refSpec) {
+    fetch(refSpec, fetchDepth) {
         return __awaiter(this, void 0, void 0, function* () {
-            const args = [
-                '-c',
-                'protocol.version=2',
-                'fetch',
-                '--no-tags',
-                '--prune',
-                '--progress',
-                '--no-recurse-submodules'
-            ];
-            if (fetchDepth > 0) {
+            const args = ['-c', 'protocol.version=2', 'fetch'];
+            if (!refSpec.some(x => x === refHelper.tagsRefSpec)) {
+                args.push('--no-tags');
+            }
+            args.push('--prune', '--progress', '--no-recurse-submodules');
+            if (fetchDepth && fetchDepth > 0) {
                 args.push(`--depth=${fetchDepth}`);
             }
             else if (fshelper.fileExistsSync(path.join(this.workingDirectory, '.git', 'shallow'))) {
@@ -5819,9 +5870,28 @@ class GitCommandManager {
     removeEnvironmentVariable(name) {
         delete this.gitEnv[name];
     }
+    /**
+     * Resolves a ref to a SHA. For a branch or lightweight tag, the commit SHA is returned.
+     * For an annotated tag, the tag SHA is returned.
+     * @param {string} ref  For example: 'refs/heads/master' or '/refs/tags/v1'
+     * @returns {Promise<string>}
+     */
+    revParse(ref) {
+        return __awaiter(this, void 0, void 0, function* () {
+            const output = yield this.execGit(['rev-parse', ref]);
+            return output.stdout.trim();
+        });
+    }
     setEnvironmentVariable(name, value) {
         this.gitEnv[name] = value;
     }
+    shaExists(sha) {
+        return __awaiter(this, void 0, void 0, function* () {
+            const args = ['rev-parse', '--verify', '--quiet', `${sha}^{object}`];
+            const output = yield this.execGit(args, true);
+            return output.exitCode === 0;
+        });
+    }
     submoduleForeach(command, recursive) {
         return __awaiter(this, void 0, void 0, function* () {
             const args = ['submodule', 'foreach'];
@@ -6060,7 +6130,7 @@ function getSource(settings) {
         core.endGroup();
         // Prepare existing directory, otherwise recreate
         if (isExisting) {
-            yield gitDirectoryHelper.prepareExistingDirectory(git, settings.repositoryPath, repositoryUrl, settings.clean);
+            yield gitDirectoryHelper.prepareExistingDirectory(git, settings.repositoryPath, repositoryUrl, settings.clean, settings.ref);
         }
         if (!git) {
             // Downloading using REST API
@@ -6102,8 +6172,21 @@ function getSource(settings) {
             }
             // Fetch
             core.startGroup('Fetching the repository');
-            const refSpec = refHelper.getRefSpec(settings.ref, settings.commit);
-            yield git.fetch(settings.fetchDepth, refSpec);
+            if (settings.fetchDepth <= 0) {
+                // Fetch all branches and tags
+                let refSpec = refHelper.getRefSpecForAllHistory(settings.ref, settings.commit);
+                yield git.fetch(refSpec);
+                // When all history is fetched, the ref we're interested in may have moved to a different
+                // commit (push or force push). If so, fetch again with a targeted refspec.
+                if (!(yield refHelper.testRef(git, settings.ref, settings.commit))) {
+                    refSpec = refHelper.getRefSpec(settings.ref, settings.commit);
+                    yield git.fetch(refSpec);
+                }
+            }
+            else {
+                const refSpec = refHelper.getRefSpec(settings.ref, settings.commit);
+                yield git.fetch(refSpec, settings.fetchDepth);
+            }
             core.endGroup();
             // Checkout info
             core.startGroup('Determining the checkout info');
@@ -7454,7 +7537,7 @@ const fs = __importStar(__webpack_require__(747));
 const fsHelper = __importStar(__webpack_require__(618));
 const io = __importStar(__webpack_require__(1));
 const path = __importStar(__webpack_require__(622));
-function prepareExistingDirectory(git, repositoryPath, repositoryUrl, clean) {
+function prepareExistingDirectory(git, repositoryPath, repositoryUrl, clean, ref) {
     return __awaiter(this, void 0, void 0, function* () {
         assert.ok(repositoryPath, 'Expected repositoryPath to be defined');
         assert.ok(repositoryUrl, 'Expected repositoryUrl to be defined');
@@ -7494,10 +7577,24 @@ function prepareExistingDirectory(git, repositoryPath, repositoryUrl, clean) {
                 for (const branch of branches) {
                     yield git.branchDelete(false, branch);
                 }
-                // Remove all refs/remotes/origin/* to avoid conflicts
-                branches = yield git.branchList(true);
-                for (const branch of branches) {
-                    yield git.branchDelete(true, branch);
+                // Remove any conflicting refs/remotes/origin/*
+                // Example 1: Consider ref is refs/heads/foo and previously fetched refs/remotes/origin/foo/bar
+                // Example 2: Consider ref is refs/heads/foo/bar and previously fetched refs/remotes/origin/foo
+                if (ref) {
+                    ref = ref.startsWith('refs/') ? ref : `refs/heads/${ref}`;
+                    if (ref.startsWith('refs/heads/')) {
+                        const upperName1 = ref.toUpperCase().substr('REFS/HEADS/'.length);
+                        const upperName1Slash = `${upperName1}/`;
+                        branches = yield git.branchList(true);
+                        for (const branch of branches) {
+                            const upperName2 = branch.substr('origin/'.length).toUpperCase();
+                            const upperName2Slash = `${upperName2}/`;
+                            if (upperName1.startsWith(upperName2Slash) ||
+                                upperName2.startsWith(upperName1Slash)) {
+                                yield git.branchDelete(true, branch);
+                            }
+                        }
+                    }
                 }
                 core.endGroup();
                 // Clean