remote_execution.proto: Add proposed symlink support

https://github.com/bazelbuild/remote-apis/pull/18/

2 files changed, 222 insertions, 97 deletions

diff --git a/buildstream/_protos/build/bazel/remote/execution/v2/remote_execution.proto b/buildstream/_protos/build/bazel/remote/execution/v2/remote_execution.proto
index bd89f5752..7edbce3bc 100644
--- a/buildstream/_protos/build/bazel/remote/execution/v2/remote_execution.proto
+++ b/buildstream/_protos/build/bazel/remote/execution/v2/remote_execution.proto
@@ -517,11 +517,12 @@ message Platform {
 }
 
 // A `Directory` represents a directory node in a file tree, containing zero or
-// more children [FileNodes][build.bazel.remote.execution.v2.FileNode]
-// and [DirectoryNodes][build.bazel.remote.execution.v2.DirectoryNode].
-// Each `Node` contains its name in the directory, the digest of its content
-// (either a file blob or a `Directory` proto), as well as possibly some
-// metadata about the file or directory.
+// more children [FileNodes][build.bazel.remote.execution.v2.FileNode],
+// [DirectoryNodes][build.bazel.remote.execution.v2.DirectoryNode] and
+// [SymlinkNodes][build.bazel.remote.execution.v2.SymlinkNode].
+// Each `Node` contains its name in the directory, either the digest of its
+// content (either a file blob or a `Directory` proto) or a symlink target, as
+// well as possibly some metadata about the file or directory.
 //
 // In order to ensure that two equivalent directory trees hash to the same
 // value, the following restrictions MUST be obeyed when constructing a
@@ -529,8 +530,8 @@ message Platform {
 //   - Every child in the directory must have a path of exactly one segment.
 //     Multiple levels of directory hierarchy may not be collapsed.
 //   - Each child in the directory must have a unique path segment (file name).
-//   - The files and directories in the directory must each be sorted in
-//     lexicographical order by path. The path strings must be sorted by code
+//   - The files, directories and symlinks in the directory must each be sorted
+//     in lexicographical order by path. The path strings must be sorted by code
 //     point, equivalently, by UTF-8 bytes.
 //
 // A `Directory` that obeys the restrictions is said to be in canonical form.
@@ -582,6 +583,9 @@ message Directory {
 
   // The subdirectories in the directory.
   repeated DirectoryNode directories = 2;
+
+  // The symlinks in the directory.
+  repeated SymlinkNode symlinks = 3;
 }
 
 // A `FileNode` represents a single file and associated metadata.
@@ -612,6 +616,20 @@ message DirectoryNode {
   Digest digest = 2;
 }
 
+// A `SymlinkNode` represents a symbolic link.
+message SymlinkNode {
+  // The name of the symlink.
+  string name = 1;
+
+  // The target path of the symlink. The path separator is a forward slash `/`.
+  // The target path can be relative to the parent directory of the symlink or
+  // it can be an absolute path starting with `/`. Support for absolute paths
+  // can be checked using the [Capabilities][build.bazel.remote.execution.v2.Capabilities]
+  // API. The canonical form forbids the substrings `/./` and `//` in the target
+  // path. `..` components are allowed anywhere in the target path.
+  string target = 2;
+}
+
 // A content digest. A digest for a given blob consists of the size of the blob
 // and its hash. The hash algorithm to use is defined by the server, but servers
 // SHOULD use SHA-256.
@@ -1233,6 +1251,20 @@ message PriorityCapabilities {
 
 // Capabilities of the remote cache system.
 message CacheCapabilities {
+  // Describes how the server treats absolute symlink targets.
+  enum SymlinkAbsolutePathStrategy {
+    UNKNOWN = 0;
+
+    // Server will return an INVALID_ARGUMENT on input symlinks with absolute targets.
+    // If an action tries to create an output symlink with an absolute target, a
+    // FAILED_PRECONDITION will be returned.
+    DISALLOWED = 1;
+
+    // Server will allow symlink targets to escape the input root tree, possibly
+    // resulting in non-hermetic builds.
+    ALLOWED = 2;
+  }
+
   // All the digest functions supported by the remote cache.
   // Remote cache may support multiple digest functions simultaneously.
   repeated DigestFunction digest_function = 1;
@@ -1248,6 +1280,9 @@ message CacheCapabilities {
   // in practice there will always be a message size limitation
   // of the protocol in use, e.g. GRPC.
   int64 max_batch_total_size_bytes = 4;
+
+  // Whether absolute symlink targets are supported.
+  SymlinkAbsolutePathStrategy symlink_absolute_path_strategy = 5;
 }
 
 // Capabilities of the remote execution system.
diff --git a/buildstream/_protos/build/bazel/remote/execution/v2/remote_execution_pb2.py b/buildstream/_protos/build/bazel/remote/execution/v2/remote_execution_pb2.py
index a52da0e3a..46d59b184 100644
--- a/buildstream/_protos/build/bazel/remote/execution/v2/remote_execution_pb2.py
+++ b/buildstream/_protos/build/bazel/remote/execution/v2/remote_execution_pb2.py
@@ -26,7 +26,7 @@ DESCRIPTOR = _descriptor.FileDescriptor(
   name='build/bazel/remote/execution/v2/remote_execution.proto',
   package='build.bazel.remote.execution.v2',
   syntax='proto3',
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   ,
   dependencies=[build_dot_bazel_dot_semver_dot_semver__pb2.DESCRIPTOR,google_dot_api_dot_annotations__pb2.DESCRIPTOR,google_dot_longrunning_dot_operations__pb2.DESCRIPTOR,google_dot_protobuf_dot_duration__pb2.DESCRIPTOR,google_dot_protobuf_dot_timestamp__pb2.DESCRIPTOR,google_dot_rpc_dot_status__pb2.DESCRIPTOR,])
 
@@ -55,8 +55,8 @@ _DIGESTFUNCTION = _descriptor.EnumDescriptor(
   ],
   containing_type=None,
   options=None,
-  serialized_start=6911,
-  serialized_end=6971,
+  serialized_start=7213,
+  serialized_end=7273,
 )
 _sym_db.RegisterEnumDescriptor(_DIGESTFUNCTION)
 
@@ -96,11 +96,37 @@ _EXECUTEOPERATIONMETADATA_STAGE = _descriptor.EnumDescriptor(
   ],
   containing_type=None,
   options=None,
-  serialized_start=3757,
-  serialized_end=3836,
+  serialized_start=3866,
+  serialized_end=3945,
 )
 _sym_db.RegisterEnumDescriptor(_EXECUTEOPERATIONMETADATA_STAGE)
 
+_CACHECAPABILITIES_SYMLINKABSOLUTEPATHSTRATEGY = _descriptor.EnumDescriptor(
+  name='SymlinkAbsolutePathStrategy',
+  full_name='build.bazel.remote.execution.v2.CacheCapabilities.SymlinkAbsolutePathStrategy',
+  filename=None,
+  file=DESCRIPTOR,
+  values=[
+    _descriptor.EnumValueDescriptor(
+      name='UNKNOWN', index=0, number=0,
+      options=None,
+      type=None),
+    _descriptor.EnumValueDescriptor(
+      name='DISALLOWED', index=1, number=1,
+      options=None,
+      type=None),
+    _descriptor.EnumValueDescriptor(
+      name='ALLOWED', index=2, number=2,
+      options=None,
+      type=None),
+  ],
+  containing_type=None,
+  options=None,
+  serialized_start=6696,
+  serialized_end=6767,
+)
+_sym_db.RegisterEnumDescriptor(_CACHECAPABILITIES_SYMLINKABSOLUTEPATHSTRATEGY)
+
 
 _ACTION = _descriptor.Descriptor(
   name='Action',
@@ -346,6 +372,13 @@ _DIRECTORY = _descriptor.Descriptor(
       message_type=None, enum_type=None, containing_type=None,
       is_extension=False, extension_scope=None,
       options=None, file=DESCRIPTOR),
+    _descriptor.FieldDescriptor(
+      name='symlinks', full_name='build.bazel.remote.execution.v2.Directory.symlinks', index=2,
+      number=3, type=11, cpp_type=10, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None, file=DESCRIPTOR),
   ],
   extensions=[
   ],
@@ -359,7 +392,7 @@ _DIRECTORY = _descriptor.Descriptor(
   oneofs=[
   ],
   serialized_start=937,
-  serialized_end=1075,
+  serialized_end=1139,
 )
 
 
@@ -403,8 +436,8 @@ _FILENODE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=1077,
-  serialized_end=1187,
+  serialized_start=1141,
+  serialized_end=1251,
 )
 
 
@@ -441,8 +474,46 @@ _DIRECTORYNODE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=1189,
-  serialized_end=1275,
+  serialized_start=1253,
+  serialized_end=1339,
+)
+
+
+_SYMLINKNODE = _descriptor.Descriptor(
+  name='SymlinkNode',
+  full_name='build.bazel.remote.execution.v2.SymlinkNode',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='name', full_name='build.bazel.remote.execution.v2.SymlinkNode.name', index=0,
+      number=1, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=_b("").decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None, file=DESCRIPTOR),
+    _descriptor.FieldDescriptor(
+      name='target', full_name='build.bazel.remote.execution.v2.SymlinkNode.target', index=1,
+      number=2, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=_b("").decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None, file=DESCRIPTOR),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+  ],
+  options=None,
+  is_extendable=False,
+  syntax='proto3',
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=1341,
+  serialized_end=1384,
 )
 
 
@@ -479,8 +550,8 @@ _DIGEST = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=1277,
-  serialized_end=1319,
+  serialized_start=1386,
+  serialized_end=1428,
 )
 
 
@@ -573,8 +644,8 @@ _EXECUTEDACTIONMETADATA = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=1322,
-  serialized_end=1942,
+  serialized_start=1431,
+  serialized_end=2051,
 )
 
 
@@ -653,8 +724,8 @@ _ACTIONRESULT = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=1945,
-  serialized_end=2382,
+  serialized_start=2054,
+  serialized_end=2491,
 )
 
 
@@ -698,8 +769,8 @@ _OUTPUTFILE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=2384,
-  serialized_end=2496,
+  serialized_start=2493,
+  serialized_end=2605,
 )
 
 
@@ -736,8 +807,8 @@ _TREE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=2498,
-  serialized_end=2624,
+  serialized_start=2607,
+  serialized_end=2733,
 )
 
 
@@ -774,8 +845,8 @@ _OUTPUTDIRECTORY = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=2626,
-  serialized_end=2725,
+  serialized_start=2735,
+  serialized_end=2834,
 )
 
 
@@ -805,8 +876,8 @@ _EXECUTIONPOLICY = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=2727,
-  serialized_end=2762,
+  serialized_start=2836,
+  serialized_end=2871,
 )
 
 
@@ -836,8 +907,8 @@ _RESULTSCACHEPOLICY = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=2764,
-  serialized_end=2802,
+  serialized_start=2873,
+  serialized_end=2911,
 )
 
 
@@ -895,8 +966,8 @@ _EXECUTEREQUEST = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=2805,
-  serialized_end=3112,
+  serialized_start=2914,
+  serialized_end=3221,
 )
 
 
@@ -933,8 +1004,8 @@ _LOGFILE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=3114,
-  serialized_end=3204,
+  serialized_start=3223,
+  serialized_end=3313,
 )
 
 
@@ -971,8 +1042,8 @@ _EXECUTERESPONSE_SERVERLOGSENTRY = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=3435,
-  serialized_end=3526,
+  serialized_start=3544,
+  serialized_end=3635,
 )
 
 _EXECUTERESPONSE = _descriptor.Descriptor(
@@ -1022,8 +1093,8 @@ _EXECUTERESPONSE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=3207,
-  serialized_end=3526,
+  serialized_start=3316,
+  serialized_end=3635,
 )
 
 
@@ -1075,8 +1146,8 @@ _EXECUTEOPERATIONMETADATA = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=3529,
-  serialized_end=3836,
+  serialized_start=3638,
+  serialized_end=3945,
 )
 
 
@@ -1106,8 +1177,8 @@ _WAITEXECUTIONREQUEST = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=3838,
-  serialized_end=3874,
+  serialized_start=3947,
+  serialized_end=3983,
 )
 
 
@@ -1144,8 +1215,8 @@ _GETACTIONRESULTREQUEST = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=3876,
-  serialized_end=3987,
+  serialized_start=3985,
+  serialized_end=4096,
 )
 
 
@@ -1196,8 +1267,8 @@ _UPDATEACTIONRESULTREQUEST = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=3990,
-  serialized_end=4257,
+  serialized_start=4099,
+  serialized_end=4366,
 )
 
 
@@ -1234,8 +1305,8 @@ _FINDMISSINGBLOBSREQUEST = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=4259,
-  serialized_end=4370,
+  serialized_start=4368,
+  serialized_end=4479,
 )
 
 
@@ -1265,8 +1336,8 @@ _FINDMISSINGBLOBSRESPONSE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=4372,
-  serialized_end=4469,
+  serialized_start=4481,
+  serialized_end=4578,
 )
 
 
@@ -1303,8 +1374,8 @@ _BATCHUPDATEBLOBSREQUEST_REQUEST = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=4606,
-  serialized_end=4686,
+  serialized_start=4715,
+  serialized_end=4795,
 )
 
 _BATCHUPDATEBLOBSREQUEST = _descriptor.Descriptor(
@@ -1340,8 +1411,8 @@ _BATCHUPDATEBLOBSREQUEST = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=4472,
-  serialized_end=4686,
+  serialized_start=4581,
+  serialized_end=4795,
 )
 
 
@@ -1378,8 +1449,8 @@ _BATCHUPDATEBLOBSRESPONSE_RESPONSE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=4804,
-  serialized_end=4907,
+  serialized_start=4913,
+  serialized_end=5016,
 )
 
 _BATCHUPDATEBLOBSRESPONSE = _descriptor.Descriptor(
@@ -1408,8 +1479,8 @@ _BATCHUPDATEBLOBSRESPONSE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=4689,
-  serialized_end=4907,
+  serialized_start=4798,
+  serialized_end=5016,
 )
 
 
@@ -1446,8 +1517,8 @@ _BATCHREADBLOBSREQUEST = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=4909,
-  serialized_end=5013,
+  serialized_start=5018,
+  serialized_end=5122,
 )
 
 
@@ -1491,8 +1562,8 @@ _BATCHREADBLOBSRESPONSE_RESPONSE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=5127,
-  serialized_end=5244,
+  serialized_start=5236,
+  serialized_end=5353,
 )
 
 _BATCHREADBLOBSRESPONSE = _descriptor.Descriptor(
@@ -1521,8 +1592,8 @@ _BATCHREADBLOBSRESPONSE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=5016,
-  serialized_end=5244,
+  serialized_start=5125,
+  serialized_end=5353,
 )
 
 
@@ -1573,8 +1644,8 @@ _GETTREEREQUEST = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=5247,
-  serialized_end=5387,
+  serialized_start=5356,
+  serialized_end=5496,
 )
 
 
@@ -1611,8 +1682,8 @@ _GETTREERESPONSE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=5389,
-  serialized_end=5496,
+  serialized_start=5498,
+  serialized_end=5605,
 )
 
 
@@ -1642,8 +1713,8 @@ _GETCAPABILITIESREQUEST = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=5498,
-  serialized_end=5545,
+  serialized_start=5607,
+  serialized_end=5654,
 )
 
 
@@ -1701,8 +1772,8 @@ _SERVERCAPABILITIES = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=5548,
-  serialized_end=5903,
+  serialized_start=5657,
+  serialized_end=6012,
 )
 
 
@@ -1732,8 +1803,8 @@ _ACTIONCACHEUPDATECAPABILITIES = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=5905,
-  serialized_end=5960,
+  serialized_start=6014,
+  serialized_end=6069,
 )
 
 
@@ -1770,8 +1841,8 @@ _PRIORITYCAPABILITIES_PRIORITYRANGE = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=6076,
-  serialized_end=6135,
+  serialized_start=6185,
+  serialized_end=6244,
 )
 
 _PRIORITYCAPABILITIES = _descriptor.Descriptor(
@@ -1800,8 +1871,8 @@ _PRIORITYCAPABILITIES = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=5963,
-  serialized_end=6135,
+  serialized_start=6072,
+  serialized_end=6244,
 )
 
 
@@ -1840,11 +1911,19 @@ _CACHECAPABILITIES = _descriptor.Descriptor(
       message_type=None, enum_type=None, containing_type=None,
       is_extension=False, extension_scope=None,
       options=None, file=DESCRIPTOR),
+    _descriptor.FieldDescriptor(
+      name='symlink_absolute_path_strategy', full_name='build.bazel.remote.execution.v2.CacheCapabilities.symlink_absolute_path_strategy', index=4,
+      number=5, type=14, cpp_type=8, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None, file=DESCRIPTOR),
   ],
   extensions=[
   ],
   nested_types=[],
   enum_types=[
+    _CACHECAPABILITIES_SYMLINKABSOLUTEPATHSTRATEGY,
   ],
   options=None,
   is_extendable=False,
@@ -1852,8 +1931,8 @@ _CACHECAPABILITIES = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=6138,
-  serialized_end=6465,
+  serialized_start=6247,
+  serialized_end=6767,
 )
 
 
@@ -1897,8 +1976,8 @@ _EXECUTIONCAPABILITIES = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=6468,
-  serialized_end=6683,
+  serialized_start=6770,
+  serialized_end=6985,
 )
 
 
@@ -1935,8 +2014,8 @@ _TOOLDETAILS = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=6685,
-  serialized_end=6739,
+  serialized_start=6987,
+  serialized_end=7041,
 )
 
 
@@ -1987,8 +2066,8 @@ _REQUESTMETADATA = _descriptor.Descriptor(
   extension_ranges=[],
   oneofs=[
   ],
-  serialized_start=6742,
-  serialized_end=6909,
+  serialized_start=7044,
+  serialized_end=7211,
 )
 
 _ACTION.fields_by_name['command_digest'].message_type = _DIGEST
@@ -2001,6 +2080,7 @@ _PLATFORM_PROPERTY.containing_type = _PLATFORM
 _PLATFORM.fields_by_name['properties'].message_type = _PLATFORM_PROPERTY
 _DIRECTORY.fields_by_name['files'].message_type = _FILENODE
 _DIRECTORY.fields_by_name['directories'].message_type = _DIRECTORYNODE
+_DIRECTORY.fields_by_name['symlinks'].message_type = _SYMLINKNODE
 _FILENODE.fields_by_name['digest'].message_type = _DIGEST
 _DIRECTORYNODE.fields_by_name['digest'].message_type = _DIGEST
 _EXECUTEDACTIONMETADATA.fields_by_name['queued_timestamp'].message_type = google_dot_protobuf_dot_timestamp__pb2._TIMESTAMP
@@ -2063,6 +2143,8 @@ _PRIORITYCAPABILITIES.fields_by_name['priorities'].message_type = _PRIORITYCAPAB
 _CACHECAPABILITIES.fields_by_name['digest_function'].enum_type = _DIGESTFUNCTION
 _CACHECAPABILITIES.fields_by_name['action_cache_update_capabilities'].message_type = _ACTIONCACHEUPDATECAPABILITIES
 _CACHECAPABILITIES.fields_by_name['cache_priority_capabilities'].message_type = _PRIORITYCAPABILITIES
+_CACHECAPABILITIES.fields_by_name['symlink_absolute_path_strategy'].enum_type = _CACHECAPABILITIES_SYMLINKABSOLUTEPATHSTRATEGY
+_CACHECAPABILITIES_SYMLINKABSOLUTEPATHSTRATEGY.containing_type = _CACHECAPABILITIES
 _EXECUTIONCAPABILITIES.fields_by_name['digest_function'].enum_type = _DIGESTFUNCTION
 _EXECUTIONCAPABILITIES.fields_by_name['execution_priority_capabilities'].message_type = _PRIORITYCAPABILITIES
 _REQUESTMETADATA.fields_by_name['tool_details'].message_type = _TOOLDETAILS
@@ -2072,6 +2154,7 @@ DESCRIPTOR.message_types_by_name['Platform'] = _PLATFORM
 DESCRIPTOR.message_types_by_name['Directory'] = _DIRECTORY
 DESCRIPTOR.message_types_by_name['FileNode'] = _FILENODE
 DESCRIPTOR.message_types_by_name['DirectoryNode'] = _DIRECTORYNODE
+DESCRIPTOR.message_types_by_name['SymlinkNode'] = _SYMLINKNODE
 DESCRIPTOR.message_types_by_name['Digest'] = _DIGEST
 DESCRIPTOR.message_types_by_name['ExecutedActionMetadata'] = _EXECUTEDACTIONMETADATA
 DESCRIPTOR.message_types_by_name['ActionResult'] = _ACTIONRESULT
@@ -2164,6 +2247,13 @@ DirectoryNode = _reflection.GeneratedProtocolMessageType('DirectoryNode', (_mess
   ))
 _sym_db.RegisterMessage(DirectoryNode)
 
+SymlinkNode = _reflection.GeneratedProtocolMessageType('SymlinkNode', (_message.Message,), dict(
+  DESCRIPTOR = _SYMLINKNODE,
+  __module__ = 'build.bazel.remote.execution.v2.remote_execution_pb2'
+  # @@protoc_insertion_point(class_scope:build.bazel.remote.execution.v2.SymlinkNode)
+  ))
+_sym_db.RegisterMessage(SymlinkNode)
+
 Digest = _reflection.GeneratedProtocolMessageType('Digest', (_message.Message,), dict(
   DESCRIPTOR = _DIGEST,
   __module__ = 'build.bazel.remote.execution.v2.remote_execution_pb2'
@@ -2433,8 +2523,8 @@ _EXECUTION = _descriptor.ServiceDescriptor(
   file=DESCRIPTOR,
   index=0,
   options=None,
-  serialized_start=6974,
-  serialized_end=7287,
+  serialized_start=7276,
+  serialized_end=7589,
   methods=[
   _descriptor.MethodDescriptor(
     name='Execute',
@@ -2466,8 +2556,8 @@ _ACTIONCACHE = _descriptor.ServiceDescriptor(
   file=DESCRIPTOR,
   index=1,
   options=None,
-  serialized_start=7290,
-  serialized_end=7760,
+  serialized_start=7592,
+  serialized_end=8062,
   methods=[
   _descriptor.MethodDescriptor(
     name='GetActionResult',
@@ -2499,8 +2589,8 @@ _CONTENTADDRESSABLESTORAGE = _descriptor.ServiceDescriptor(
   file=DESCRIPTOR,
   index=2,
   options=None,
-  serialized_start=7763,
-  serialized_end=8558,
+  serialized_start=8065,
+  serialized_end=8860,
   methods=[
   _descriptor.MethodDescriptor(
     name='FindMissingBlobs',
@@ -2550,8 +2640,8 @@ _CAPABILITIES = _descriptor.ServiceDescriptor(
   file=DESCRIPTOR,
   index=3,
   options=None,
-  serialized_start=8561,
-  serialized_end=8750,
+  serialized_start=8863,
+  serialized_end=9052,
   methods=[
   _descriptor.MethodDescriptor(
     name='GetCapabilities',