| /* |
| * Copyright 2009, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
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| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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| */ |
| |
| |
| // Implementation of a Posix metrics aggregator. |
| |
| #include "aggregator-posix.h" |
| #include "const-posix.h" |
| #include "formatter.h" |
| #include "util/endian/endian.h" |
| #include "statsreport/common/pathhelpers.h" |
| |
| namespace stats_report { |
| |
| MetricsAggregatorPosix::MetricsAggregatorPosix(const MetricCollection &coll) { |
| key_value_table_.reset(new KeyValueTable(get_cache_dir() + "stats.sqlite3", |
| "stats")); |
| } |
| |
| MetricsAggregatorPosix::~MetricsAggregatorPosix() { |
| } |
| |
| void MetricsAggregatorPosix::ResetMetrics() { |
| StartAggregation(); |
| (void)transaction_->Clear(); |
| EndAggregation(); |
| } |
| |
| namespace { |
| |
| void AddMetric(const string& key, |
| const ScopedStatement &statement, |
| void *ref_con) { |
| Formatter *formatter = |
| static_cast<Formatter *>(ref_con); |
| |
| string original_key; |
| scoped_ptr<MetricBase> metric; |
| |
| if (key.compare(0, kCountsKeyName.length(), kCountsKeyName) == 0) { |
| int64 value; |
| GetColumn(statement.get(), 0, &value); |
| original_key = key.substr(kCountsKeyName.length()); |
| metric.reset(new CountMetric(original_key.c_str(), value)); |
| } else if (key.compare(0, kTimingsKeyName.length(), kTimingsKeyName) == 0) { |
| std::vector<BYTE> value_bytes; |
| TimingMetric::TimingData value; |
| GetColumn(statement.get(), 0, &value_bytes); |
| memcpy(&value, &value_bytes[0], value_bytes.size()); |
| value.count = gntohl(value.count); |
| value.sum = gntohll(value.sum); |
| value.minimum = gntohll(value.minimum); |
| value.maximum = gntohll(value.maximum); |
| metric.reset(new TimingMetric(original_key.c_str(), value)); |
| } else if (key.compare(0, kIntegersKeyName.length(), kIntegersKeyName) == 0) { |
| int64 value; |
| GetColumn(statement.get(), 0, &value); |
| original_key = key.substr(kIntegersKeyName.length()); |
| metric.reset(new IntegerMetric(original_key.c_str(), value)); |
| } else if (key.compare(0, kBooleansKeyName.length(), kBooleansKeyName) == 0) { |
| int32 value; |
| GetColumn(statement.get(), 0, &value); |
| original_key = key.substr(kBooleansKeyName.length()); |
| metric.reset(new BoolMetric(original_key.c_str(), value)); |
| } |
| |
| if (!original_key.empty()) |
| formatter->AddMetric(&*metric); |
| } |
| |
| } // namespace |
| |
| void MetricsAggregatorPosix::FormatMetrics(Formatter *formatter) { |
| StartAggregation(); |
| transaction_->Iterate(AddMetric, formatter); |
| EndAggregation(); |
| } |
| |
| bool MetricsAggregatorPosix::StartAggregation() { |
| transaction_.reset(new KeyValueTransaction(&*key_value_table_)); |
| |
| return true; |
| } |
| |
| void MetricsAggregatorPosix::EndAggregation() { |
| transaction_.reset(); |
| } |
| |
| void MetricsAggregatorPosix::Aggregate(CountMetric *metric) { |
| // do as little as possible if no value |
| uint64 value = metric->Reset(); |
| if (0 == value) |
| return; |
| |
| string name(metric->name()); |
| name.insert(0, kCountsKeyName); |
| int64 reg_value = 0; // yes, we only have 63 positive bits here :( |
| if (!transaction_->Get(name, ®_value)) { |
| // TODO: clean up?? |
| } |
| reg_value += value; |
| |
| (void)transaction_->Put(name, reg_value); |
| } |
| |
| void MetricsAggregatorPosix::Aggregate(TimingMetric *metric) { |
| // do as little as possible if no value |
| TimingMetric::TimingData value = metric->Reset(); |
| if (0 == value.count) |
| return; |
| |
| string name(metric->name()); |
| name.insert(0, kTimingsKeyName); |
| std::vector<BYTE> reg_value_bytes; |
| TimingMetric::TimingData reg_value; |
| if (!transaction_->Get(name, ®_value_bytes)) { |
| reg_value_bytes.resize(sizeof(reg_value)); |
| memcpy(®_value, &value, sizeof(value)); |
| } else { |
| memcpy(®_value, ®_value_bytes[0], reg_value_bytes.size()); |
| reg_value.count = gntohl(reg_value.count); |
| reg_value.sum = gntohll(reg_value.sum); |
| reg_value.minimum = gntohll(reg_value.minimum); |
| reg_value.maximum = gntohll(reg_value.maximum); |
| |
| reg_value.count += value.count; |
| reg_value.sum += value.sum; |
| reg_value.minimum = std::min(reg_value.minimum, value.minimum); |
| reg_value.maximum = std::max(reg_value.maximum, value.maximum); |
| } |
| |
| reg_value.count = ghtonl(reg_value.count); |
| reg_value.sum = ghtonll(reg_value.sum); |
| reg_value.minimum = ghtonll(reg_value.minimum); |
| reg_value.maximum = ghtonll(reg_value.maximum); |
| |
| memcpy(®_value_bytes[0], ®_value, sizeof(reg_value)); |
| (void)transaction_->Put(name, reg_value_bytes); |
| } |
| |
| void MetricsAggregatorPosix::Aggregate(IntegerMetric *metric) { |
| // do as little as possible if no value |
| int64 value = metric->value(); // yes, we only have 63 positive bits here :( |
| if (0 == value) |
| return; |
| |
| string name(metric->name()); |
| name.insert(0, kIntegersKeyName); |
| |
| (void)transaction_->Put(name, value); |
| } |
| |
| void MetricsAggregatorPosix::Aggregate(BoolMetric *metric) { |
| // do as little as possible if no value |
| int32 value = metric->Reset(); |
| if (BoolMetric::kBoolUnset == value) |
| return; |
| |
| string name(metric->name()); |
| name.insert(0, kBooleansKeyName); |
| |
| (void)transaction_->Put(name, value); |
| } |
| |
| } // namespace stats_report |