def VisitFile(self, file_proto, type_context, services, msgs, enums):
# Freeze protos that have next major version candidates.
typedb = utils.GetTypeDb()
output_proto = copy.deepcopy(file_proto)
existing_pkg_version_status = output_proto.options.Extensions[
status_pb2.file_status].package_version_status
empty_file = len(services) == 0 and len(enums) == 0 and len(msgs) == 0
pkg_version_status_exempt = file_proto.name.startswith(
'envoy/annotations') or empty_file
# It's a format error not to set package_version_status.
if existing_pkg_version_status == status_pb2.UNKNOWN and not pkg_version_status_exempt:
raise ProtoXformError('package_version_status must be set in %s' %
file_proto.name)
# Only update package_version_status for .active_or_frozen.proto,
# migrate.VersionUpgradeXform has taken care of next major version
# candidates.
if self._active_or_frozen and not pkg_version_status_exempt:
# Freeze if this is an active package with a next major version. Preserve
# frozen status otherwise.
if self._freeze and typedb.next_version_protos.get(
output_proto.name, None):
target_pkg_version_status = status_pb2.FROZEN
elif existing_pkg_version_status == status_pb2.FROZEN:
target_pkg_version_status = status_pb2.FROZEN
else:
assert (existing_pkg_version_status == status_pb2.ACTIVE)
target_pkg_version_status = status_pb2.ACTIVE
output_proto.options.Extensions[
status_pb2.
file_status].package_version_status = target_pkg_version_status
return str(output_proto)
def VersionUpgradeXform(n, envoy_internal_shadow, file_proto, params):
"""Transform a FileDescriptorProto from vN[alpha\d] to v(N+1).
Args:
n: version N to upgrade from.
envoy_internal_shadow: generate a shadow for Envoy internal use containing deprecated fields.
file_proto: vN[alpha\d] FileDescriptorProto message.
params: plugin parameters.
Returns:
v(N+1) FileDescriptorProto message.
"""
# Load type database.
typedb = utils.GetTypeDb()
# If this isn't a proto in an upgraded package, return None.
if file_proto.name not in typedb.next_version_protos or not typedb.next_version_protos[
file_proto.name]:
return None
# Otherwise, this .proto needs upgrading, do it.
freeze = 'extra_args' in params and params['extra_args'] == 'freeze'
existing_pkg_version_status = file_proto.options.Extensions[
status_pb2.file_status].package_version_status
# Normally, we are generating the NEXT_MAJOR_VERSION_CANDIDATE. However, if
# freezing and previously this was the active major version, the migrated
# version is now the ACTIVE version.
if freeze and existing_pkg_version_status == status_pb2.ACTIVE:
package_version_status = status_pb2.ACTIVE
else:
package_version_status = status_pb2.NEXT_MAJOR_VERSION_CANDIDATE
return traverse.TraverseFile(
file_proto, UpgradeVisitor(n, typedb, envoy_internal_shadow, package_version_status))
def V3MigrationXform(file_proto):
"""Transform a FileDescriptorProto from v2[alpha\d] to v3alpha.
Args:
file_proto: v2[alpha\d] FileDescriptorProto message.
Returns:
v3 FileDescriptorProto message.
"""
# Load type database.
typedb = utils.GetTypeDb()
# If this isn't a proto in an upgraded package, return None.
if file_proto.package not in typedb.next_version_packages or not typedb.next_version_packages[
file_proto.package]:
return None
# Otherwise, this .proto needs upgrading, do it.
return traverse.TraverseFile(file_proto, UpgradeVisitor(typedb))
def V3MigrationXform(envoy_internal_shadow, file_proto):
"""Transform a FileDescriptorProto from v2[alpha\d] to v3.
Args:
envoy_internal_shadow: generate a shadow for Envoy internal use containing deprecated fields.
file_proto: v2[alpha\d] FileDescriptorProto message.
Returns:
v3 FileDescriptorProto message.
"""
# Load type database.
typedb = utils.GetTypeDb()
# If this isn't a proto in an upgraded package, return None.
if file_proto.name not in typedb.next_version_protos or not typedb.next_version_protos[
file_proto.name]:
return None
# Otherwise, this .proto needs upgrading, do it.
return traverse.TraverseFile(file_proto,
UpgradeVisitor(typedb, envoy_internal_shadow))
def FormatHeaderFromFile(source_code_info, file_proto, empty_file):
"""Format proto header.
Args:
source_code_info: SourceCodeInfo object.
file_proto: FileDescriptorProto for file.
empty_file: are there no message/enum/service defs in file?
Returns:
Formatted proto header as a string.
"""
# Load the type database.
typedb = utils.GetTypeDb()
# Figure out type dependencies in this .proto.
types = Types()
text_format.Merge(traverse.TraverseFile(file_proto, type_whisperer.TypeWhispererVisitor()), types)
type_dependencies = sum([list(t.type_dependencies) for t in types.types.values()], [])
for service in file_proto.service:
for m in service.method:
type_dependencies.extend([m.input_type[1:], m.output_type[1:]])
# Determine the envoy/ import paths from type deps.
envoy_proto_paths = set(
typedb.types[t].proto_path
for t in type_dependencies
if t.startswith('envoy.') and typedb.types[t].proto_path != file_proto.name)
def CamelCase(s):
return ''.join(t.capitalize() for t in re.split('[\._]', s))
package_line = 'package %s;\n' % file_proto.package
file_block = '\n'.join(['syntax = "proto3";\n', package_line])
options = descriptor_pb2.FileOptions()
options.java_outer_classname = CamelCase(os.path.basename(file_proto.name))
options.java_multiple_files = True
options.java_package = 'io.envoyproxy.' + file_proto.package
# This is a workaround for C#/Ruby namespace conflicts between packages and
# objects, see https://github.com/envoyproxy/envoy/pull/3854.
# TODO(htuch): remove once v3 fixes this naming issue in
# https://github.com/envoyproxy/envoy/issues/8120.
if file_proto.package in ['envoy.api.v2.listener', 'envoy.api.v2.cluster']:
qualified_package = '.'.join(s.capitalize() for s in file_proto.package.split('.')) + 'NS'
options.csharp_namespace = qualified_package
options.ruby_package = qualified_package
if file_proto.service:
options.java_generic_services = True
if file_proto.options.HasExtension(migrate_pb2.file_migrate):
options.Extensions[migrate_pb2.file_migrate].CopyFrom(
file_proto.options.Extensions[migrate_pb2.file_migrate])
if file_proto.options.HasExtension(
status_pb2.file_status) and file_proto.package.endswith('alpha'):
options.Extensions[status_pb2.file_status].CopyFrom(
file_proto.options.Extensions[status_pb2.file_status])
if not empty_file:
options.Extensions[
status_pb2.file_status].package_version_status = file_proto.options.Extensions[
status_pb2.file_status].package_version_status
options_block = FormatOptions(options)
requires_versioning_import = any(
protoxform_options.GetVersioningAnnotation(m.options) for m in file_proto.message_type)
envoy_imports = list(envoy_proto_paths)
google_imports = []
infra_imports = []
misc_imports = []
public_imports = []
for idx, d in enumerate(file_proto.dependency):
if idx in file_proto.public_dependency:
public_imports.append(d)
continue
elif d.startswith('envoy/annotations') or d.startswith('udpa/annotations'):
infra_imports.append(d)
elif d.startswith('envoy/'):
# We ignore existing envoy/ imports, since these are computed explicitly
# from type_dependencies.
pass
elif d.startswith('google/'):
google_imports.append(d)
elif d.startswith('validate/'):
infra_imports.append(d)
elif d in ['udpa/annotations/versioning.proto', 'udpa/annotations/status.proto']:
# Skip, we decide to add this based on requires_versioning_import and options.
pass
else:
misc_imports.append(d)
if options.HasExtension(status_pb2.file_status):
infra_imports.append('udpa/annotations/status.proto')
if requires_versioning_import:
infra_imports.append('udpa/annotations/versioning.proto')
def FormatImportBlock(xs):
if not xs:
return ''
return FormatBlock('\n'.join(sorted('import "%s";' % x for x in set(xs) if x)))
def FormatPublicImportBlock(xs):
if not xs:
return ''
return FormatBlock('\n'.join(sorted('import public "%s";' % x for x in xs)))
import_block = '\n'.join(
map(FormatImportBlock, [envoy_imports, google_imports, misc_imports, infra_imports]))
import_block += '\n' + FormatPublicImportBlock(public_imports)
comment_block = FormatComments(source_code_info.file_level_comments)
return ''.join(map(FormatBlock, [file_block, import_block, options_block, comment_block]))
