From db54a93c6bd4d571177b13604e9e87028f158f78 Mon Sep 17 00:00:00 2001
From: janakr <janakr@google.com>
Date: Thu, 29 Jun 2017 20:22:15 +0200
Subject: Add a #getBytes() method to DeterministicWriter that returns a
 ByteString. By default it just delegates to the existing #writeOutputFile,
 but implementations may choose to override if they have easy access to a
 ByteString.

Also change some DeterministicWriter implementations that do have easy access to the ByteString.

PiperOrigin-RevId: 160550028
---
 .../build/lib/rules/genquery/GenQuery.java         | 38 +++++++++++-----------
 1 file changed, 19 insertions(+), 19 deletions(-)

(limited to 'src/main/java/com/google/devtools/build/lib/rules/genquery/GenQuery.java')

diff --git a/src/main/java/com/google/devtools/build/lib/rules/genquery/GenQuery.java b/src/main/java/com/google/devtools/build/lib/rules/genquery/GenQuery.java
index fbd0943744..d967df0956 100644
--- a/src/main/java/com/google/devtools/build/lib/rules/genquery/GenQuery.java
+++ b/src/main/java/com/google/devtools/build/lib/rules/genquery/GenQuery.java
@@ -30,6 +30,7 @@ import com.google.devtools.build.lib.analysis.RuleContext;
 import com.google.devtools.build.lib.analysis.Runfiles;
 import com.google.devtools.build.lib.analysis.RunfilesProvider;
 import com.google.devtools.build.lib.analysis.actions.AbstractFileWriteAction;
+import com.google.devtools.build.lib.analysis.actions.ByteStringDeterministicWriter;
 import com.google.devtools.build.lib.cmdline.Label;
 import com.google.devtools.build.lib.cmdline.PackageIdentifier;
 import com.google.devtools.build.lib.cmdline.ResolvedTargets;
@@ -80,9 +81,8 @@ import com.google.devtools.build.skyframe.SkyKey;
 import com.google.devtools.build.skyframe.ValueOrException;
 import com.google.devtools.common.options.OptionsParser;
 import com.google.devtools.common.options.OptionsParsingException;
-import java.io.ByteArrayOutputStream;
+import com.google.protobuf.ByteString;
 import java.io.IOException;
-import java.io.OutputStream;
 import java.nio.channels.ClosedByInterruptException;
 import java.util.Collection;
 import java.util.HashSet;
@@ -146,7 +146,7 @@ public class GenQuery implements RuleConfiguredTargetFactory {
     // force relative_locations to true so it has a deterministic output across machines.
     queryOptions.relativeLocations = true;
 
-    final byte[] result = executeQuery(ruleContext, queryOptions, getScope(ruleContext), query);
+    ByteString result = executeQuery(ruleContext, queryOptions, getScope(ruleContext), query);
     if (result == null || ruleContext.hasErrors()) {
       return null;
     }
@@ -252,8 +252,9 @@ public class GenQuery implements RuleConfiguredTargetFactory {
   }
 
   @Nullable
-  private byte[] executeQuery(RuleContext ruleContext, QueryOptions queryOptions,
-      Set<Target> scope, String query) throws InterruptedException {
+  private ByteString executeQuery(
+      RuleContext ruleContext, QueryOptions queryOptions, Set<Target> scope, String query)
+      throws InterruptedException {
     SkyFunction.Environment env = ruleContext.getAnalysisEnvironment().getSkyframeEnv();
     Pair<ImmutableMap<PackageIdentifier, Package>, ImmutableMap<Label, Target>> closureInfo;
     try {
@@ -277,9 +278,13 @@ public class GenQuery implements RuleConfiguredTargetFactory {
 
   @SuppressWarnings("unchecked")
   @Nullable
-  private byte[] doQuery(QueryOptions queryOptions, PackageProvider packageProvider,
-                         Predicate<Label> labelFilter, TargetPatternEvaluator evaluator,
-                         String query, RuleContext ruleContext)
+  private ByteString doQuery(
+      QueryOptions queryOptions,
+      PackageProvider packageProvider,
+      Predicate<Label> labelFilter,
+      TargetPatternEvaluator evaluator,
+      String query,
+      RuleContext ruleContext)
       throws InterruptedException {
 
     DigraphQueryEvalResult<Target> queryResult;
@@ -339,7 +344,7 @@ public class GenQuery implements RuleConfiguredTargetFactory {
       throw new RuntimeException(e);
     }
 
-    ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
+    ByteString.Output outputStream = ByteString.newOutput();
     try {
       QueryOutputUtils
           .output(queryOptions, queryResult, targets.getResult(), formatter, outputStream,
@@ -350,32 +355,27 @@ public class GenQuery implements RuleConfiguredTargetFactory {
       throw new RuntimeException(e);
     }
 
-    return outputStream.toByteArray();
+    return outputStream.toByteString();
   }
 
   @Immutable // assuming no other reference to result
   private static final class QueryResultAction extends AbstractFileWriteAction {
-    private final byte[] result;
+    private final ByteString result;
 
-    private QueryResultAction(ActionOwner owner, Artifact output, byte[] result) {
+    private QueryResultAction(ActionOwner owner, Artifact output, ByteString result) {
       super(owner, ImmutableList.<Artifact>of(), output, /*makeExecutable=*/false);
       this.result = result;
     }
 
     @Override
     public DeterministicWriter newDeterministicWriter(ActionExecutionContext ctx) {
-      return new DeterministicWriter() {
-        @Override
-        public void writeOutputFile(OutputStream out) throws IOException {
-          out.write(result);
-        }
-      };
+      return new ByteStringDeterministicWriter(result);
     }
 
     @Override
     protected String computeKey() {
       Fingerprint f = new Fingerprint();
-      f.addBytes(result);
+      f.addBytes(result.toByteArray());
       return f.hexDigestAndReset();
     }
   }
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