Simple REST URL cache

--
Change-Id: Ied34278c63c74aaf2db5ad90d5f076b3bddbe396
Reviewed-on: https://bazel-review.git.corp.google.com/#/c/4061/
MOS_MIGRATED_REVID=128165927

1 files changed, 19 insertions, 8 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/remote/RemoteModule.java b/src/main/java/com/google/devtools/build/lib/remote/RemoteModule.java
index 32e08615b9..c55a788720 100644
--- a/src/main/java/com/google/devtools/build/lib/remote/RemoteModule.java
+++ b/src/main/java/com/google/devtools/build/lib/remote/RemoteModule.java
@@ -24,7 +24,6 @@ import com.google.devtools.build.lib.runtime.BlazeModule;
 import com.google.devtools.build.lib.runtime.Command;
 import com.google.devtools.build.lib.runtime.CommandEnvironment;
 import com.google.devtools.common.options.OptionsBase;
-
 import java.net.URI;
 import java.net.URISyntaxException;
 
@@ -62,15 +61,27 @@ public final class RemoteModule extends BlazeModule {
     buildRequest = event.getRequest();
     RemoteOptions options = buildRequest.getOptions(RemoteOptions.class);
 
+    MemcacheActionCache cache = null;
+
     // Don't provide the remote spawn unless at least action cache is initialized.
-    if (actionCache == null
-        && (options.hazelcastNode != null || options.hazelcastClientConfig != null)) {
-      MemcacheActionCache cache =
-          new MemcacheActionCache(
-              this.env.getDirectories().getExecRoot(),
-              options,
-              HazelcastCacheFactory.create(options));
+    if (actionCache == null) {
+      if (options.hazelcastNode != null || options.hazelcastClientConfig != null) {
+        cache =
+            new MemcacheActionCache(
+                this.env.getDirectories().getExecRoot(),
+                options,
+                HazelcastCacheFactory.create(options));
+      } else if (options.restCacheUrl != null) {
+        cache =
+            new MemcacheActionCache(
+                this.env.getDirectories().getExecRoot(),
+                options,
+                RestUrlCacheFactory.create(options));
+      }
       actionCache = cache;
+    }
+
+    if (cache != null) {
       if (workExecutor == null && options.remoteWorker != null) {
         try {
           URI uri = new URI("dummy://" + options.remoteWorker);