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[JENKINS-42971] GitSCMFileSystem consumes environment and expands branch name #1305

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Merged
MarkEWaite merged 18 commits into from
Nov 23, 2022
+95 −19
Merged

[JENKINS-42971] GitSCMFileSystem consumes environment and expands branch name #1305

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cc02c2f
[JENKINS-42971] GitSCMFileSystem consumes environment and expands bra…
Aug 2, 2022
a69a857
Raised jenkins.version in POM 2
Aug 2, 2022
27aa68e
Update pom.xml
MartinKosicky Aug 2, 2022
b04e8f7
Added testing of GitSCMFileSystem branch expansion using env vars
Aug 3, 2022
d7159dc
Removed unnecesary plugin incrementals in pom.xml .
Aug 3, 2022
6111ed5
Apply suggestions from code review (code format cleanup)
MartinKosicky Aug 5, 2022
5f84f6b
HeadNameResult refactor
Aug 5, 2022
2b17a1c
Changed BOM and removed accidental test
Aug 5, 2022
ac7e38c
Merge branch 'master' into lightweight_checkout_expand_params
MarkEWaite Aug 8, 2022
c678a26
Merge remote-tracking branch 'upstream/master' into lightweight_check…
Aug 9, 2022
0fad6ba
Apply suggestions from code review. POM dependency of scm-api require…
MartinKosicky Aug 9, 2022
33d96e0
Bumped jenkins version
Aug 11, 2022
c61fbc4
Revert "Bumped jenkins version"
Aug 11, 2022
b05d4ce
Merge branch 'master' into lightweight_checkout_expand_params
MarkEWaite Nov 14, 2022
99eb6a2
Get scm-api version from bom
MarkEWaite Nov 14, 2022
5e77775
Intentionally vary expected value in test
MarkEWaite Nov 14, 2022
686cc2a
Merge branch 'master' into lightweight_checkout_expand_params
MarkEWaite Nov 22, 2022
54af228
Retain API compatibilty by including previous signature
MarkEWaite Nov 23, 2022
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74 changes: 54 additions & 20 deletions src/main/java/jenkins/plugins/git/GitSCMFileSystem.java
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Original file line number Diff line number Diff line change
Expand Up @@ -35,6 +35,7 @@
import hudson.EnvVars;
import hudson.Extension;
import hudson.model.Item;
import hudson.model.Run;
import hudson.model.TaskListener;
import hudson.plugins.git.BranchSpec;
import hudson.plugins.git.GitException;
Expand Down Expand Up @@ -284,8 +285,47 @@ public boolean supportsDescriptor(SCMSourceDescriptor descriptor) {
return AbstractGitSCMSource.class.isAssignableFrom(descriptor.clazz);
}

static class HeadNameResult {
final String headName;
final String prefix;

private HeadNameResult(String headName, String prefix) {
this.headName = headName;
this.prefix = prefix;
}

static HeadNameResult calculate(@NonNull BranchSpec branchSpec,
@CheckForNull SCMRevision rev,
@CheckForNull EnvVars env) {
String branchSpecExpandedName = branchSpec.getName();
if (env != null) {
branchSpecExpandedName = env.expand(branchSpecExpandedName);
}

String prefix = Constants.R_HEADS;
if (branchSpecExpandedName.startsWith(Constants.R_TAGS)) {
prefix = Constants.R_TAGS;
}

String headName;
if (rev != null) {
headName = env.expand(rev.getHead().getName());
} else {
if (branchSpecExpandedName.startsWith(prefix)) {
headName = branchSpecExpandedName.substring(prefix.length());
} else if (branchSpecExpandedName.startsWith("*/")) {
headName = branchSpecExpandedName.substring(2);
} else {
headName = branchSpecExpandedName;
}
}
return new HeadNameResult(headName, prefix);
}
}

@Override
public SCMFileSystem build(@NonNull Item owner, @NonNull SCM scm, @CheckForNull SCMRevision rev)
public SCMFileSystem build(@NonNull Item owner, @NonNull SCM scm, @CheckForNull SCMRevision rev,
@CheckForNull Run<?,?> _build)
throws IOException, InterruptedException {
if (rev != null && !(rev instanceof AbstractGitSCMSource.SCMRevisionImpl)) {
return null;
Expand All @@ -302,6 +342,12 @@ public SCMFileSystem build(@NonNull Item owner, @NonNull SCM scm, @CheckForNull
listener.getLogger().println("Git remote url is null");
return null;
}

EnvVars env = null;
if (_build != null) {
env = _build.getEnvironment(listener);
}

String cacheEntry = AbstractGitSCMSource.getCacheEntry(remote);
Lock cacheLock = AbstractGitSCMSource.getCacheLock(cacheEntry);
cacheLock.lock();
Expand Down Expand Up @@ -346,27 +392,15 @@ public SCMFileSystem build(@NonNull Item owner, @NonNull SCM scm, @CheckForNull
} catch (URISyntaxException ex) {
listener.getLogger().println("URI syntax exception for '" + remoteName + "' " + ex);
}
String prefix = Constants.R_HEADS;
if(branchSpec.getName().startsWith(Constants.R_TAGS)){
prefix = Constants.R_TAGS;
}
String headName;
if (rev != null) {
headName = rev.getHead().getName();
} else {
if (branchSpec.getName().startsWith(prefix)){
headName = branchSpec.getName().substring(prefix.length());
} else if (branchSpec.getName().startsWith("*/")) {
headName = branchSpec.getName().substring(2);
} else {
headName = branchSpec.getName();
}
}

HeadNameResult headNameResult = HeadNameResult.calculate(branchSpec, rev, env);

client.fetch_().prune(true).from(remoteURI, Collections.singletonList(new RefSpec(
"+" + prefix + headName + ":" + Constants.R_REMOTES + remoteName + "/"
+ headName))).execute();
"+" + headNameResult.prefix + headNameResult.headName + ":" + Constants.R_REMOTES + remoteName + "/"
+ headNameResult.headName))).execute();

listener.getLogger().println("Done.");
return new GitSCMFileSystem(client, remote, Constants.R_REMOTES + remoteName + "/" +headName, (AbstractGitSCMSource.SCMRevisionImpl) rev);
return new GitSCMFileSystem(client, remote, Constants.R_REMOTES + remoteName + "/" + headNameResult.headName, (AbstractGitSCMSource.SCMRevisionImpl) rev);
} finally {
cacheLock.unlock();
}
Expand Down
36 changes: 36 additions & 0 deletions src/test/java/jenkins/plugins/git/GitSCMFileSystemTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -42,6 +42,8 @@
import jenkins.scm.api.SCMRevision;
import jenkins.scm.api.SCMSource;
import jenkins.scm.api.SCMSourceDescriptor;

import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.ObjectId;
import org.jenkinsci.plugins.gitclient.Git;
import org.jenkinsci.plugins.gitclient.GitClient;
Expand Down Expand Up @@ -426,6 +428,40 @@ public void filesystem_supports_descriptor() throws Exception {
assertTrue(SCMFileSystem.supports(descriptor));
}

@Issue("JENKINS-42971")
@Test
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@jglick jglick Aug 5, 2022

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May also want to assert behavior with a null env, undefined variable, etc.

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@MartinKosicky MartinKosicky Aug 5, 2022

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there is one for null env, but this is internal method, and there are many checks already in the calling method

public void calculate_head_name_with_env() throws Exception {
GitSCMFileSystem.BuilderImpl.HeadNameResult result1 = GitSCMFileSystem.BuilderImpl.HeadNameResult.calculate(new BranchSpec("${BRANCH}"), null,
new EnvVars("BRANCH", "master-a"));
assertEquals("master-a", result1.headName);
assertEquals(Constants.R_HEADS, result1.prefix);

GitSCMFileSystem.BuilderImpl.HeadNameResult result2 = GitSCMFileSystem.BuilderImpl.HeadNameResult.calculate(new BranchSpec("${BRANCH}"), null,
new EnvVars("BRANCH", "refs/heads/master-b"));
assertEquals("master-b", result2.headName);
assertEquals(Constants.R_HEADS, result2.prefix);

GitSCMFileSystem.BuilderImpl.HeadNameResult result3 = GitSCMFileSystem.BuilderImpl.HeadNameResult.calculate(new BranchSpec("refs/heads/${BRANCH}"), null,
new EnvVars("BRANCH", "master-c"));
assertEquals("master-c", result3.headName);
assertEquals(Constants.R_HEADS, result3.prefix);

GitSCMFileSystem.BuilderImpl.HeadNameResult result4 = GitSCMFileSystem.BuilderImpl.HeadNameResult.calculate(new BranchSpec("${BRANCH}"), null,
null);
assertEquals("${BRANCH}", result4.headName);
assertEquals(Constants.R_HEADS, result4.prefix);

GitSCMFileSystem.BuilderImpl.HeadNameResult result5 = GitSCMFileSystem.BuilderImpl.HeadNameResult.calculate(new BranchSpec("*/${BRANCH}"), null,
new EnvVars("BRANCH", "master-d"));
assertEquals("master-d", result5.headName);
assertEquals(Constants.R_HEADS, result5.prefix);

GitSCMFileSystem.BuilderImpl.HeadNameResult result6 = GitSCMFileSystem.BuilderImpl.HeadNameResult.calculate(new BranchSpec("*/master-e"), null,
new EnvVars("BRANCH", "dummy"));
assertEquals("master-e", result6.headName);
assertEquals(Constants.R_HEADS, result6.prefix);
}

/** inline ${@link hudson.Functions#isWindows()} to prevent a transient remote classloader issue */
private boolean isWindows() {
return java.io.File.pathSeparatorChar==';';
Expand Down