From 49451c1f853acf3e60ef90635767da0addb8671e Mon Sep 17 00:00:00 2001
From: Googler <noreply@google.com>
Date: Wed, 28 Feb 2018 12:21:14 -0800
Subject: Add --proto:output_rule_attrs flag to blaze query to enable filtering
 of output to given attributes.

RELNOTES[NEW]: blaze query: use --proto:output_rule_attrs to filter for given attributes

PiperOrigin-RevId: 187364996
---
 .../build/lib/query2/output/ProtoOutputFormatter.java   | 17 ++++++++++++++++-
 .../devtools/build/lib/query2/output/QueryOptions.java  | 17 +++++++++++++++++
 2 files changed, 33 insertions(+), 1 deletion(-)

(limited to 'src/main')

diff --git a/src/main/java/com/google/devtools/build/lib/query2/output/ProtoOutputFormatter.java b/src/main/java/com/google/devtools/build/lib/query2/output/ProtoOutputFormatter.java
index e239075f9c..c2fd4b0202 100644
--- a/src/main/java/com/google/devtools/build/lib/query2/output/ProtoOutputFormatter.java
+++ b/src/main/java/com/google/devtools/build/lib/query2/output/ProtoOutputFormatter.java
@@ -21,6 +21,8 @@ import static com.google.devtools.build.lib.query2.proto.proto2api.Build.Target.
 
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Preconditions;
+import com.google.common.base.Predicate;
+import com.google.common.base.Predicates;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMultimap;
 import com.google.common.collect.ImmutableSet;
@@ -58,6 +60,7 @@ import java.io.OutputStream;
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.LinkedHashSet;
+import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Set;
@@ -84,6 +87,7 @@ public class ProtoOutputFormatter extends AbstractUnorderedFormatter {
 
   private boolean relativeLocations = false;
   protected boolean includeDefaultValues = true;
+  private Predicate<String> ruleAttributePredicate = Predicates.alwaysTrue();
   private boolean flattenSelects = true;
 
   protected void setDependencyFilter(QueryOptions options) {
@@ -100,9 +104,20 @@ public class ProtoOutputFormatter extends AbstractUnorderedFormatter {
     super.setOptions(options, aspectResolver);
     this.relativeLocations = options.relativeLocations;
     this.includeDefaultValues = options.protoIncludeDefaultValues;
+    this.ruleAttributePredicate = newAttributePredicate(options.protoOutputRuleAttributes);
     this.flattenSelects = options.protoFlattenSelects;
   }
 
+  private static Predicate<String> newAttributePredicate(List<String> outputAttributes) {
+    if (outputAttributes.equals(ImmutableList.of("all"))) {
+      return Predicates.alwaysTrue();
+    } else if (outputAttributes.isEmpty()) {
+      return Predicates.alwaysFalse();
+    } else {
+      return Predicates.in(ImmutableSet.copyOf(outputAttributes));
+    }
+  }
+
   @Override
   public OutputFormatterCallback<Target> createPostFactoStreamCallback(
       final OutputStream out, final QueryOptions options) {
@@ -373,7 +388,7 @@ public class ProtoOutputFormatter extends AbstractUnorderedFormatter {
 
   /** Filter out some attributes */
   protected boolean includeAttribute(Rule rule, Attribute attr) {
-    return true;
+    return ruleAttributePredicate.apply(attr.getName());
   }
 
   /** Allow filtering of aspect attributes. */
diff --git a/src/main/java/com/google/devtools/build/lib/query2/output/QueryOptions.java b/src/main/java/com/google/devtools/build/lib/query2/output/QueryOptions.java
index 1e0b994f69..d116e4510f 100644
--- a/src/main/java/com/google/devtools/build/lib/query2/output/QueryOptions.java
+++ b/src/main/java/com/google/devtools/build/lib/query2/output/QueryOptions.java
@@ -13,12 +13,15 @@
 // limitations under the License.
 package com.google.devtools.build.lib.query2.output;
 
+import com.google.common.collect.ImmutableList;
 import com.google.devtools.build.lib.query2.CommonQueryOptions;
 import com.google.devtools.build.lib.query2.engine.QueryEnvironment.Setting;
+import com.google.devtools.common.options.Converters.CommaSeparatedOptionListConverter;
 import com.google.devtools.common.options.EnumConverter;
 import com.google.devtools.common.options.Option;
 import com.google.devtools.common.options.OptionDocumentationCategory;
 import com.google.devtools.common.options.OptionEffectTag;
+import java.util.List;
 import java.util.Set;
 
 /** Command-line options for the Blaze query language, revision 2. */
@@ -163,6 +166,20 @@ public class QueryOptions extends CommonQueryOptions {
   )
   public boolean protoIncludeDefaultValues;
 
+  @Option(
+    name = "proto:output_rule_attrs",
+    converter = CommaSeparatedOptionListConverter.class,
+    defaultValue = "all",
+    category = "query",
+    documentationCategory = OptionDocumentationCategory.QUERY,
+    effectTags = {OptionEffectTag.TERMINAL_OUTPUT},
+    help =
+        "Comma separated list of attributes to include in output. Defaults to all attributes. "
+            + "Set to empty string to not output any attribute. "
+            + "This option is applicable to --output=proto."
+  )
+  public List<String> protoOutputRuleAttributes = ImmutableList.of("all");
+
   @Option(
     name = "xml:line_numbers",
     defaultValue = "true",
-- 
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