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Diffstat (limited to 'tools/stats_log_api_gen/Collation.cpp')
| -rw-r--r-- | tools/stats_log_api_gen/Collation.cpp | 265 |
1 files changed, 265 insertions, 0 deletions
diff --git a/tools/stats_log_api_gen/Collation.cpp b/tools/stats_log_api_gen/Collation.cpp new file mode 100644 index 000000000000..5d2926821164 --- /dev/null +++ b/tools/stats_log_api_gen/Collation.cpp @@ -0,0 +1,265 @@ +/* + * Copyright (C) 2017, 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. + */ + +#include "Collation.h" + +#include <stdio.h> +#include <map> + +namespace android { +namespace stats_log_api_gen { + +using google::protobuf::FieldDescriptor; +using google::protobuf::FileDescriptor; +using google::protobuf::SourceLocation; +using std::map; + + +// +// AtomDecl class +// + +AtomDecl::AtomDecl() + :code(0), + name() +{ +} + +AtomDecl::AtomDecl(const AtomDecl& that) + :code(that.code), + name(that.name), + message(that.message), + fields(that.fields) +{ +} + +AtomDecl::AtomDecl(int c, const string& n, const string& m) + :code(c), + name(n), + message(m) +{ +} + +AtomDecl::~AtomDecl() +{ +} + + +/** + * Print an error message for a FieldDescriptor, including the file name and line number. + */ +static void +print_error(const FieldDescriptor* field, const char* format, ...) +{ + const Descriptor* message = field->containing_type(); + const FileDescriptor* file = message->file(); + + SourceLocation loc; + if (field->GetSourceLocation(&loc)) { + // TODO: this will work if we can figure out how to pass --include_source_info to protoc + fprintf(stderr, "%s:%d: ", file->name().c_str(), loc.start_line); + } else { + fprintf(stderr, "%s: ", file->name().c_str()); + } + va_list args; + va_start(args, format); + vfprintf(stderr, format, args); + va_end (args); +} + +/** + * Convert a protobuf type into a java type. + */ +static java_type_t +java_type(const FieldDescriptor* field) +{ + int protoType = field->type(); + switch (protoType) { + case FieldDescriptor::TYPE_DOUBLE: + return JAVA_TYPE_DOUBLE; + case FieldDescriptor::TYPE_FLOAT: + return JAVA_TYPE_FLOAT; + case FieldDescriptor::TYPE_INT64: + return JAVA_TYPE_LONG; + case FieldDescriptor::TYPE_UINT64: + return JAVA_TYPE_LONG; + case FieldDescriptor::TYPE_INT32: + return JAVA_TYPE_INT; + case FieldDescriptor::TYPE_FIXED64: + return JAVA_TYPE_LONG; + case FieldDescriptor::TYPE_FIXED32: + return JAVA_TYPE_INT; + case FieldDescriptor::TYPE_BOOL: + return JAVA_TYPE_BOOLEAN; + case FieldDescriptor::TYPE_STRING: + return JAVA_TYPE_STRING; + case FieldDescriptor::TYPE_GROUP: + return JAVA_TYPE_UNKNOWN; + case FieldDescriptor::TYPE_MESSAGE: + // TODO: not the final package name + if (field->message_type()->full_name() == "android.os.statsd.WorkSource") { + return JAVA_TYPE_WORK_SOURCE; + } else { + return JAVA_TYPE_OBJECT; + } + case FieldDescriptor::TYPE_BYTES: + return JAVA_TYPE_BYTE_ARRAY; + case FieldDescriptor::TYPE_UINT32: + return JAVA_TYPE_INT; + case FieldDescriptor::TYPE_ENUM: + return JAVA_TYPE_INT; + case FieldDescriptor::TYPE_SFIXED32: + return JAVA_TYPE_INT; + case FieldDescriptor::TYPE_SFIXED64: + return JAVA_TYPE_LONG; + case FieldDescriptor::TYPE_SINT32: + return JAVA_TYPE_INT; + case FieldDescriptor::TYPE_SINT64: + return JAVA_TYPE_LONG; + default: + return JAVA_TYPE_UNKNOWN; + } +} + +/** + * Gather the info about the atoms. + */ +int +collate_atoms(const Descriptor* descriptor, Atoms* atoms) +{ + int errorCount = 0; + const bool dbg = false; + + for (int i=0; i<descriptor->field_count(); i++) { + const FieldDescriptor* atomField = descriptor->field(i); + + if (dbg) { + printf(" %s (%d)\n", atomField->name().c_str(), atomField->number()); + } + + // StatsEvent only has one oneof, which contains only messages. Don't allow other types. + if (atomField->type() != FieldDescriptor::TYPE_MESSAGE) { + print_error(atomField, + "Bad type for atom. StatsEvent can only have message type fields: %s\n", + atomField->name().c_str()); + errorCount++; + continue; + } + + const Descriptor* atom = atomField->message_type(); + + // Build a sorted list of the fields. Descriptor has them in source file order. + map<int,const FieldDescriptor*> fields; + for (int j=0; j<atom->field_count(); j++) { + const FieldDescriptor* field = atom->field(j); + fields[field->number()] = field; + } + + // Check that the parameters start at 1 and go up sequentially. + int expectedNumber = 1; + for (map<int,const FieldDescriptor*>::const_iterator it = fields.begin(); + it != fields.end(); it++) { + const int number = it->first; + const FieldDescriptor* field = it->second; + if (number != expectedNumber) { + print_error(field, "Fields must be numbered consecutively starting at 1:" + " '%s' is %d but should be %d\n", + field->name().c_str(), number, expectedNumber); + errorCount++; + expectedNumber = number; + continue; + } + expectedNumber++; + } + + // Check that only allowed types are present. Remove any invalid ones. + for (map<int,const FieldDescriptor*>::const_iterator it = fields.begin(); + it != fields.end(); it++) { + const FieldDescriptor* field = it->second; + + java_type_t javaType = java_type(field); + + if (javaType == JAVA_TYPE_UNKNOWN) { + print_error(field, "Unkown type for field: %s\n", field->name().c_str()); + errorCount++; + continue; + } else if (javaType == JAVA_TYPE_OBJECT) { + // Allow WorkSources, but only at position 1. + print_error(field, "Message type not allowed for field: %s\n", + field->name().c_str()); + errorCount++; + continue; + } else if (javaType == JAVA_TYPE_BYTE_ARRAY) { + print_error(field, "Raw bytes type not allowed for field: %s\n", + field->name().c_str()); + errorCount++; + continue; + } + + } + + // Check that if there's a WorkSource, it's at position 1. + for (map<int,const FieldDescriptor*>::const_iterator it = fields.begin(); + it != fields.end(); it++) { + int number = it->first; + if (number != 1) { + const FieldDescriptor* field = it->second; + java_type_t javaType = java_type(field); + if (javaType == JAVA_TYPE_WORK_SOURCE) { + print_error(field, "WorkSource fields must have field id 1, in message: '%s'\n", + atom->name().c_str()); + errorCount++; + } + } + } + + AtomDecl atomDecl(atomField->number(), atomField->name(), atom->name()); + + // Build the type signature + vector<java_type_t> signature; + for (map<int,const FieldDescriptor*>::const_iterator it = fields.begin(); + it != fields.end(); it++) { + const FieldDescriptor* field = it->second; + java_type_t javaType = java_type(field); + + atomDecl.fields.push_back(AtomField(field->name(), javaType)); + signature.push_back(javaType); + } + + atoms->signatures.insert(signature); + atoms->decls.insert(atomDecl); + } + + if (dbg) { + printf("signatures = [\n"); + for (set<vector<java_type_t>>::const_iterator it = atoms->signatures.begin(); + it != atoms->signatures.end(); it++) { + printf(" "); + for (vector<java_type_t>::const_iterator jt = it->begin(); jt != it->end(); jt++) { + printf(" %d", (int)*jt); + } + printf("\n"); + } + printf("]\n"); + } + + return errorCount; +} + +} // namespace stats_log_api_gen +} // namespace android + + |