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Fix GlobalLogHandler singleton creation order #1767

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merged 3 commits into from
Nov 14, 2022
+13 −7
Merged

Fix GlobalLogHandler singleton creation order #1767

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266f639
fix log handler creation order
lalitb Nov 13, 2022
a210c7a
include header
lalitb Nov 14, 2022
ad0415c
fix comment on the initialization order
lalitb Nov 14, 2022
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2 changes: 2 additions & 0 deletions sdk/src/logs/logger_provider.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@
#ifdef ENABLE_LOGS_PREVIEW

# include "opentelemetry/sdk/logs/logger_provider.h"
# include "opentelemetry/sdk/common/global_log_handler.h"

# include <memory>
# include <mutex>
Expand All @@ -26,6 +27,7 @@ LoggerProvider::LoggerProvider(std::unique_ptr<LogRecordProcessor> &&processor,
std::vector<std::unique_ptr<LogRecordProcessor>> processors;
processors.emplace_back(std::move(processor));
context_ = std::make_shared<sdk::logs::LoggerContext>(std::move(processors), std::move(resource));
OTEL_INTERNAL_LOG_DEBUG("[LoggerProvider] LoggerProvider created.");
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How about other ctors? Didn't add the log there because they are not used by lazy singleton pattern? Probably add the log for consistency as the log message is provider instance created.

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@lalitb lalitb Nov 14, 2022 •
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You mean to enhance our debug logging in general by adding logs in all the constructors? That's good feedback, will create a separate issue for it, as it is not directly related to this fix.

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How about other ctors? Didn't add the log there because they are not used by lazy singleton pattern? Probably add the log for consistency as the log message is provider instance created.

The per signal singletons are the entry points to the SDK. No other code in the SDK can be executed before building these per signal singletons.

So, by definition, once these singletons are executed, it is guaranteed that every other class used in the SDK implementation will see an already initialized global log handler.

There is not need, to fix this bug, to add log statements in every classes, even if another class uses a lazy singleton pattern.

}

LoggerProvider::LoggerProvider(std::vector<std::unique_ptr<LogRecordProcessor>> &&processors,
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4 changes: 3 additions & 1 deletion sdk/src/metrics/meter_provider.cc
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Expand Up @@ -24,7 +24,9 @@ MeterProvider::MeterProvider(std::shared_ptr<MeterContext> context) noexcept : c
MeterProvider::MeterProvider(std::unique_ptr<ViewRegistry> views,
sdk::resource::Resource resource) noexcept
: context_(std::make_shared<MeterContext>(std::move(views), resource))
{}
{
OTEL_INTERNAL_LOG_DEBUG("[MeterProvider] MeterProvider created.");
}

nostd::shared_ptr<metrics_api::Meter> MeterProvider::GetMeter(
nostd::string_view name,
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5 changes: 4 additions & 1 deletion sdk/src/trace/tracer_provider.cc
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Expand Up @@ -2,6 +2,7 @@
// SPDX-License-Identifier: Apache-2.0

#include "opentelemetry/sdk/trace/tracer_provider.h"
#include "opentelemetry/sdk/common/global_log_handler.h"
#include "opentelemetry/sdk_config.h"

OPENTELEMETRY_BEGIN_NAMESPACE
Expand All @@ -14,7 +15,9 @@ namespace trace_api = opentelemetry::trace;

TracerProvider::TracerProvider(std::shared_ptr<sdk::trace::TracerContext> context) noexcept
: context_{context}
{}
{
OTEL_INTERNAL_LOG_DEBUG("[TracerProvider] TracerProvider created.");
}

TracerProvider::TracerProvider(std::unique_ptr<SpanProcessor> processor,
resource::Resource resource,
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