| #!/usr/bin/env python |
| # Copyright (C) 2018 The Android Open Source Project |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| from __future__ import absolute_import |
| from __future__ import division |
| from __future__ import print_function |
| import os |
| import re |
| import sys |
| from codecs import open |
| |
| PROJECT_ROOT = os.path.dirname(os.path.dirname(os.path.realpath(__file__))) |
| |
| CONFIG_PROTO_ROOTS = [ |
| 'protos/perfetto/common/data_source_descriptor.proto', |
| 'protos/perfetto/config/trace_config.proto' |
| ] |
| MERGED_CONFIG_PROTO = 'protos/perfetto/config/perfetto_config.proto' |
| |
| TRACE_PROTO_ROOTS = CONFIG_PROTO_ROOTS + ['protos/perfetto/trace/trace.proto'] |
| MERGED_TRACE_PROTO = 'protos/perfetto/trace/perfetto_trace.proto' |
| |
| METRICS_PROTOS_ROOTS = ['protos/perfetto/metrics/metrics.proto'] |
| MERGED_METRICS_PROTO = 'protos/perfetto/metrics/perfetto_merged_metrics.proto' |
| |
| REPLACEMENT_HEADER = ''' |
| // AUTOGENERATED - DO NOT EDIT |
| // --------------------------- |
| // This file has been generated by |
| // AOSP://external/perfetto/%s |
| // merging the perfetto config protos. |
| // This fused proto is intended to be copied in: |
| // - Android tree, for statsd. |
| // - Google internal repos. |
| |
| syntax = "proto2"; |
| |
| package perfetto.protos; |
| ''' |
| |
| |
| def get_transitive_imports(rel_path, visited): |
| if rel_path in visited: |
| return [] |
| visited.add(rel_path) |
| with open(os.path.join(PROJECT_ROOT, rel_path), 'r', encoding='utf-8') as f: |
| content = f.read() |
| imports = re.findall(r'^import "(.*)";\n', content, flags=re.MULTILINE) |
| res = [] |
| for child in sorted(imports): |
| res += get_transitive_imports(child, visited) |
| res += [rel_path] |
| return res |
| |
| |
| def merge_protos_content(proto_paths): |
| root_dir = os.path.dirname(os.path.dirname(os.path.realpath(__file__))) |
| merged_content = REPLACEMENT_HEADER.lstrip() % __file__ |
| added_files = set() |
| for proto in proto_paths: |
| if proto in added_files: |
| continue |
| added_files.add(proto) |
| |
| path = os.path.join(root_dir, proto) |
| with open(path, 'r', encoding='utf-8') as f: |
| content = f.read() |
| |
| # Remove header |
| header = re.match(r'\/(\*|\/)(?:.|\s)*?package .*;\n', content) |
| header = header.group(0) |
| content = content[len(header):] |
| |
| content = re.sub(r'^import.*?\n\n?', '', content, flags=re.MULTILINE) |
| merged_content += '\n// Begin of %s\n' % proto |
| merged_content += content |
| merged_content += '\n// End of %s\n' % proto |
| |
| definitions_re = r'^ *(?:message|enum) ([A-Z][A-Za-z0-9].*) {' |
| definitions = re.finditer(definitions_re, merged_content, re.MULTILINE) |
| types = set((match.group(1) for match in definitions)) |
| |
| # Limitation: |types| doesn't track the nesting of messages, so a reference to |
| # a nested message (optional One.Two f = 1;) is simplified to its leafmost |
| # name (Two in this example). |
| uses_re = r'^( +)(?:repeated)?(?:optional)?\s?'\ |
| r'(?:[A-Z]\w+\.)*([A-Z]\w+)\s+[a-z]\w*\s*=\s*(\d+);' |
| uses = re.finditer(uses_re, merged_content, re.MULTILINE) |
| substitutions = [] |
| for use in uses: |
| everything = use.group(0) |
| indentation = use.group(1) |
| used_type = use.group(2) |
| field_number = use.group(3) |
| if used_type not in types: |
| replacement = '{}// removed field with id {}'.format( |
| indentation, field_number) |
| substitutions.append((everything, replacement)) |
| |
| for before, after in substitutions: |
| merged_content = merged_content.replace(before, after) |
| |
| return merged_content |
| |
| |
| def merge_protos(root_paths, output_path): |
| root_dir = os.path.dirname(os.path.dirname(os.path.realpath(__file__))) |
| all_protos = [] |
| for root_path in root_paths: |
| all_protos += get_transitive_imports(root_path, visited=set()) |
| merged_content = merge_protos_content(all_protos) |
| |
| out_path = os.path.join(root_dir, output_path) |
| prev_content = None |
| if os.path.exists(out_path): |
| with open(out_path, 'r', encoding='utf-8') as fprev: |
| prev_content = fprev.read() |
| |
| if prev_content == merged_content: |
| return True |
| |
| if '--check-only' in sys.argv: |
| return False |
| |
| print('Updating {}'.format(output_path)) |
| with open(out_path, 'w', encoding='utf-8') as fout: |
| fout.write(merged_content) |
| return True |
| |
| |
| def main(): |
| result = merge_protos(CONFIG_PROTO_ROOTS, MERGED_CONFIG_PROTO) |
| result &= merge_protos(TRACE_PROTO_ROOTS, MERGED_TRACE_PROTO) |
| result &= merge_protos(METRICS_PROTOS_ROOTS, MERGED_METRICS_PROTO) |
| return 0 if result else 1 |
| |
| |
| if __name__ == '__main__': |
| sys.exit(main()) |