Accept --target_label, --injecting_rule_kind in ijar.

This is a rollforward with fixes.

The values (if present) are written into the manifest with this format:

Target-Label: <label>
Injecting-Rule-Kind: <kind>

In the future, JavaBuilder will make sure of this instead of command line arguments to find owners for jars for its add_dep commands.

PiperOrigin-RevId: 185159950

2 files changed, 26 insertions, 0 deletions

diff --git a/third_party/ijar/test/BUILD b/third_party/ijar/test/BUILD
index 455ab29608..6b4eeb908e 100644
--- a/third_party/ijar/test/BUILD
+++ b/third_party/ijar/test/BUILD
@@ -101,6 +101,14 @@ genrule(
     tools = ["//third_party/ijar"],
 )
 
+genrule(
+    name = "interface_ijar_testlib_with_target_label",
+    srcs = [":ijar_testlib"],
+    outs = ["interface_ijar_testlib_with_target_label.jar"],
+    cmd = "$(location //third_party/ijar) --target_label //foo:foo --injecting_rule_kind foo_library $< $@",
+    tools = ["//third_party/ijar"],
+)
+
 java_library(
     name = "typeannotations2",
     srcs = glob(["typeannotations2/**/*.java"]),
diff --git a/third_party/ijar/test/IjarTests.java b/third_party/ijar/test/IjarTests.java
index 4e0fb5d839..467680552b 100644
--- a/third_party/ijar/test/IjarTests.java
+++ b/third_party/ijar/test/IjarTests.java
@@ -23,15 +23,19 @@ import com.google.common.io.ByteStreams;
 import com.google.devtools.build.java.bazel.BazelJavaCompiler;
 import java.io.File;
 import java.io.IOException;
+import java.time.Instant;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.Enumeration;
+import java.util.GregorianCalendar;
 import java.util.HashMap;
 import java.util.Locale;
 import java.util.Map;
 import java.util.Set;
+import java.util.jar.Attributes;
 import java.util.jar.JarEntry;
 import java.util.jar.JarFile;
+import java.util.jar.Manifest;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipFile;
 import javax.annotation.processing.AbstractProcessor;
@@ -274,4 +278,18 @@ public class IjarTests {
     assertThat(new String(lib.get("module-info.class"), UTF_8)).isEqualTo("hello");
     assertThat(new String(lib.get("foo/module-info.class"), UTF_8)).isEqualTo("goodbye");
   }
+
+  @Test
+  public void testTargetLabel() throws Exception {
+    try (JarFile jf =
+        new JarFile("third_party/ijar/test/interface_ijar_testlib_with_target_label.jar")) {
+      Manifest manifest = jf.getManifest();
+      Attributes attributes = manifest.getMainAttributes();
+      assertThat(attributes.getValue("Target-Label")).isEqualTo("//foo:foo");
+      assertThat(attributes.getValue("Injecting-Rule-Kind")).isEqualTo("foo_library");
+      assertThat(jf.getEntry(JarFile.MANIFEST_NAME).getLastModifiedTime().toInstant())
+          .isEqualTo(
+              Instant.ofEpochMilli(new GregorianCalendar(1980, 0, 1, 0, 0, 0).getTimeInMillis()));
+    }
+  }
 }