private void deserializeRule(DeserializationContext context, Build.Rule rulePb)
throws PackageDeserializationException, InterruptedException {
Location ruleLocation = EmptyLocation.INSTANCE;
RuleClass ruleClass = packageDeserializationEnvironment.getRuleClass(rulePb, ruleLocation);
Map<String, ParsedAttributeValue> attributeValues = new HashMap<>();
for (Build.Attribute attrPb : rulePb.getAttributeList()) {
Type<?> type = ruleClass.getAttributeByName(attrPb.getName()).getType();
attributeValues.put(attrPb.getName(), deserializeAttribute(type, attrPb));
}
Label ruleLabel = deserializeLabel(rulePb.getName());
try {
Rule rule =
ruleClass.createRuleWithParsedAttributeValues(
ruleLabel,
context.packageBuilder,
ruleLocation,
attributeValues,
NullEventHandler.INSTANCE,
new AttributeContainerWithoutLocation(ruleClass));
context.packageBuilder.addRule(rule);
Preconditions.checkState(!rule.containsErrors());
} catch (NameConflictException | LabelSyntaxException e) {
throw new PackageDeserializationException(e);
}
}
private static ParsedAttributeValue deserializeAttribute(
Type<?> expectedType, Build.Attribute attrPb) throws PackageDeserializationException {
Object value = deserializeAttributeValue(expectedType, attrPb);
return new ParsedAttributeValue(
attrPb.hasExplicitlySpecified() && attrPb.getExplicitlySpecified(),
value,
EmptyLocation.INSTANCE);
}
private void deserializeRule(DeserializationContext context, Build.Rule rulePb)
throws PackageDeserializationException, InterruptedException {
Location ruleLocation = EmptyLocation.INSTANCE;
RuleClass ruleClass = packageDeserializationEnvironment.getRuleClass(rulePb, ruleLocation);
Map<String, ParsedAttributeValue> attributeValues = new HashMap<>();
AttributesToDeserialize attrToDeserialize =
packageDeserializationEnvironment.attributesToDeserialize();
Hasher hasher = Hashing.md5().newHasher();
for (Build.Attribute attrPb : rulePb.getAttributeList()) {
Type<?> type = ruleClass.getAttributeByName(attrPb.getName()).getType();
attributeValues.put(attrPb.getName(), deserializeAttribute(type, attrPb));
if (attrToDeserialize.addSyntheticAttributeHash) {
// TODO(bazel-team): This might give false positives because of explicit vs implicit.
hasher.putBytes(attrPb.toByteArray());
}
}
AttributeContainerWithoutLocation attributeContainer =
new AttributeContainerWithoutLocation(ruleClass, hasher.hash());
Label ruleLabel = deserializeLabel(rulePb.getName());
try {
Rule rule =
createRuleWithParsedAttributeValues(
ruleClass,
ruleLabel,
context.packageBuilder,
ruleLocation,
attributeValues,
NullEventHandler.INSTANCE,
attributeContainer);
context.packageBuilder.addRule(rule);
// Remove the attribute after it is added to package in order to pass the validations
// and be able to compute all the outputs.
if (attrToDeserialize != DESERIALIZE_ALL_ATTRS) {
for (String attrName : attributeValues.keySet()) {
Attribute attribute = ruleClass.getAttributeByName(attrName);
if (!(attrToDeserialize.shouldKeepAttributeWithName.apply(attrName)
|| BuildType.isLabelType(attribute.getType()))) {
attributeContainer.clearIfNotLabel(attrName);
}
}
}
Preconditions.checkState(!rule.containsErrors());
} catch (NameConflictException | LabelSyntaxException e) {
throw new PackageDeserializationException(e);
}
}
private static List<?> deserializeGlobs(List<?> matches, Build.Attribute attrPb) {
if (attrPb.getGlobCriteriaCount() == 0) {
return matches;
}
Builder<GlobCriteria> criteriaBuilder = ImmutableList.builder();
for (Build.GlobCriteria criteriaPb : attrPb.getGlobCriteriaList()) {
if (criteriaPb.hasGlob() && criteriaPb.getGlob()) {
criteriaBuilder.add(
GlobCriteria.fromGlobCall(
ImmutableList.copyOf(criteriaPb.getIncludeList()),
ImmutableList.copyOf(criteriaPb.getExcludeList())));
} else {
criteriaBuilder.add(
GlobCriteria.fromList(ImmutableList.copyOf(criteriaPb.getIncludeList())));
}
}
@SuppressWarnings({"unchecked", "rawtypes"})
GlobList<?> result = new GlobList(criteriaBuilder.build(), matches);
return result;
}
// TODO(bazel-team): Verify that these put sane values in the attribute
@VisibleForTesting
static Object deserializeAttributeValue(Type<?> expectedType, Build.Attribute attrPb)
throws PackageDeserializationException {
switch (attrPb.getType()) {
case INTEGER:
return attrPb.hasIntValue() ? new Integer(attrPb.getIntValue()) : null;
case STRING:
if (!attrPb.hasStringValue()) {
return null;
} else if (expectedType == BuildType.NODEP_LABEL) {
return deserializeLabel(attrPb.getStringValue());
} else {
return attrPb.getStringValue();
}
case LABEL:
case OUTPUT:
return attrPb.hasStringValue() ? deserializeLabel(attrPb.getStringValue()) : null;
case STRING_LIST:
if (expectedType == BuildType.NODEP_LABEL_LIST) {
return deserializeGlobs(deserializeLabels(attrPb.getStringListValueList()), attrPb);
} else {
return deserializeGlobs(ImmutableList.copyOf(attrPb.getStringListValueList()), attrPb);
}
case LABEL_LIST:
case OUTPUT_LIST:
return deserializeGlobs(deserializeLabels(attrPb.getStringListValueList()), attrPb);
case DISTRIBUTION_SET:
return deserializeDistribs(attrPb.getStringListValueList());
case LICENSE:
return attrPb.hasLicense() ? deserializeLicense(attrPb.getLicense()) : null;
case STRING_DICT:
{
// Building an immutable map will fail if the builder was given duplicate keys. These
// entry
// lists may contain duplicate keys if the serialized map value was configured (e.g. via
// the select function) and the different configuration values had keys in common. This is
// because serialization flattens configurable map-valued attributes.
//
// As long as serialization does this flattening, to avoid failure during deserialization,
// we dedupe entries in the list by their keys.
// TODO(bazel-team): Serialize and deserialize configured values with fidelity (without
// flattening them).
ImmutableMap.Builder<String, String> builder = ImmutableMap.builder();
HashSet<String> keysSeenSoFar = Sets.newHashSet();
for (Build.StringDictEntry entry : attrPb.getStringDictValueList()) {
String key = entry.getKey();
if (keysSeenSoFar.add(key)) {
builder.put(key, entry.getValue());
}
}
return builder.build();
}
case STRING_DICT_UNARY:
{
// See STRING_DICT case's comment about why this dedupes entries by their keys.
ImmutableMap.Builder<String, String> builder = ImmutableMap.builder();
HashSet<String> keysSeenSoFar = Sets.newHashSet();
for (StringDictUnaryEntry entry : attrPb.getStringDictUnaryValueList()) {
String key = entry.getKey();
if (keysSeenSoFar.add(key)) {
builder.put(key, entry.getValue());
}
}
return builder.build();
}
case FILESET_ENTRY_LIST:
return deserializeFilesetEntries(attrPb.getFilesetListValueList());
case LABEL_LIST_DICT:
{
// See STRING_DICT case's comment about why this dedupes entries by their keys.
ImmutableMap.Builder<String, List<Label>> builder = ImmutableMap.builder();
HashSet<String> keysSeenSoFar = Sets.newHashSet();
for (Build.LabelListDictEntry entry : attrPb.getLabelListDictValueList()) {
String key = entry.getKey();
if (keysSeenSoFar.add(key)) {
builder.put(key, deserializeLabels(entry.getValueList()));
}
}
return builder.build();
}
case STRING_LIST_DICT:
{
// See STRING_DICT case's comment about why this dedupes entries by their keys.
ImmutableMap.Builder<String, List<String>> builder = ImmutableMap.builder();
HashSet<String> keysSeenSoFar = Sets.newHashSet();
for (Build.StringListDictEntry entry : attrPb.getStringListDictValueList()) {
String key = entry.getKey();
if (keysSeenSoFar.add(key)) {
builder.put(key, ImmutableList.copyOf(entry.getValueList()));
}
}
return builder.build();
}
case BOOLEAN:
return attrPb.hasBooleanValue() ? attrPb.getBooleanValue() : null;
case TRISTATE:
return attrPb.hasStringValue() ? deserializeTriStateValue(attrPb.getStringValue()) : null;
case INTEGER_LIST:
return ImmutableList.copyOf(attrPb.getIntListValueList());
default:
throw new PackageDeserializationException("Invalid discriminator: " + attrPb.getType());
}
}
