1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you 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 <iostream>
#include <mutex>
#include <sstream>
#include <unordered_map>
#include "contrib/libs/apache/arrow_next/cpp/src/arrow/util/logger.h"
namespace arrow20 {
namespace util {
namespace {
class NoopLogger : public Logger {
public:
void Log(const LogDetails&) override {}
bool is_enabled() const override { return false; }
};
class SimpleLogger : public Logger {
public:
SimpleLogger(ArrowLogLevel severity_threshold, std::ostream* sink)
: severity_threshold_(severity_threshold), sink_(sink) {}
void Log(const LogDetails& details) override {
*sink_ << details.source_location.file << ":" << details.source_location.line << ": "
<< std::string(details.message) << std::endl;
}
bool Flush(std::chrono::microseconds) override {
sink_->flush();
return true;
}
bool is_enabled() const override { return true; }
ArrowLogLevel severity_threshold() const override { return severity_threshold_; }
private:
ArrowLogLevel severity_threshold_;
std::ostream* sink_;
};
using LoggerMap = std::unordered_map<std::string, std::shared_ptr<Logger>>;
struct RegistryImpl {
LoggerMap loggers;
std::shared_ptr<Logger> default_logger = MakeOStreamLogger(ArrowLogLevel::ARROW_INFO);
std::mutex mtx;
};
RegistryImpl* GetRegistry() {
static auto instance = std::make_unique<RegistryImpl>();
return instance.get();
}
} // namespace
std::shared_ptr<Logger> MakeOStreamLogger(ArrowLogLevel severity_threshold,
std::ostream& sink) {
return std::make_shared<SimpleLogger>(severity_threshold, &sink);
}
std::shared_ptr<Logger> MakeOStreamLogger(ArrowLogLevel severity_threshold) {
return MakeOStreamLogger(severity_threshold, std::cerr);
}
Status LoggerRegistry::RegisterLogger(std::string_view name,
std::shared_ptr<Logger> logger) {
DCHECK_NE(logger, nullptr);
auto registry = GetRegistry();
std::lock_guard<std::mutex> lk(registry->mtx);
auto ret = registry->loggers.emplace(name, std::move(logger));
ARROW_RETURN_IF(!ret.second, Status::Invalid("Logger with name \"", std::string(name),
"\" is already registered"));
return Status::OK();
}
void LoggerRegistry::UnregisterLogger(std::string_view name) {
auto registry = GetRegistry();
std::lock_guard<std::mutex> lk(registry->mtx);
registry->loggers.erase(std::string(name));
}
std::shared_ptr<Logger> LoggerRegistry::GetLogger(std::string_view name) {
if (name.empty()) {
return GetDefaultLogger();
}
auto registry = GetRegistry();
{
std::lock_guard<std::mutex> lk(registry->mtx);
const auto& loggers = registry->loggers;
if (auto it = loggers.find(std::string(name)); it != loggers.end()) {
return it->second;
}
}
return std::make_shared<NoopLogger>();
}
std::shared_ptr<Logger> LoggerRegistry::GetDefaultLogger() {
auto registry = GetRegistry();
std::lock_guard<std::mutex> lk(registry->mtx);
return registry->default_logger;
}
void LoggerRegistry::SetDefaultLogger(std::shared_ptr<Logger> logger) {
DCHECK_NE(logger, nullptr);
auto registry = GetRegistry();
std::lock_guard<std::mutex> lk(registry->mtx);
registry->default_logger = std::move(logger);
}
class LogMessage::Impl {
public:
Impl(ArrowLogLevel severity, SourceLocation source_location) {
details.severity = severity;
details.source_location = source_location;
}
Impl(ArrowLogLevel severity, std::shared_ptr<Logger> logger,
SourceLocation source_location)
: Impl(severity, source_location) {
logger_ = std::move(logger);
}
Impl(ArrowLogLevel severity, std::string logger_name, SourceLocation source_location)
: Impl(severity, source_location) {
this->logger_name = std::move(logger_name);
}
~Impl() {
auto* logger = GetResolvedLogger();
if (logger && logger->is_enabled() &&
details.severity >= logger->severity_threshold()) {
auto str = stream.str();
details.message = str;
logger->Log(details);
}
// It's debatable whether this should be the underlying logger's responsibility
if (details.severity == ArrowLogLevel::ARROW_FATAL) {
if (logger) {
logger->Flush();
}
std::abort();
}
}
Logger* GetResolvedLogger() {
if (!logger_) {
logger_ = LoggerRegistry::GetLogger(logger_name);
}
return logger_.get();
}
LogDetails details{};
std::string logger_name;
std::stringstream stream;
private:
std::shared_ptr<Logger> logger_;
};
LogMessage::LogMessage(ArrowLogLevel severity, std::shared_ptr<Logger> logger,
SourceLocation source_location)
: impl_(std::make_shared<Impl>(severity, std::move(logger), source_location)) {}
LogMessage::LogMessage(ArrowLogLevel severity, std::string_view logger_name,
SourceLocation source_location)
: impl_(std::make_shared<Impl>(severity, std::string(logger_name), source_location)) {
}
std::ostream& LogMessage::Stream() { return impl_->stream; }
bool LogMessage::CheckIsEnabled() {
auto* logger = impl_->GetResolvedLogger();
return (logger && logger->is_enabled() &&
impl_->details.severity >= logger->severity_threshold());
}
} // namespace util
} // namespace arrow20
|
