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| // Prevents conflict with other SLF4J instances. Important for premain. | ||
| relocate("org.slf4j", "io.opentelemetry.javaagent.slf4j") |
| // suppress repeated logging of "No metric data to export - skipping export." | ||
| // since PeriodicMetricReader is configured with a short interval | ||
| "-Dio.opentelemetry.javaagent.slf4j.simpleLogger.log.io.opentelemetry.sdk.metrics.export.PeriodicMetricReader=INFO", | ||
| "-Dio.opentelemetry.javaagent.logging.simple.slf4j.simpleLogger.log.io.opentelemetry.sdk.metrics.export.PeriodicMetricReader=INFO", |
javaagent-tooling/src/main/java/io/opentelemetry/javaagent/tooling/AgentStarterImpl.java
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| @AutoService(LoggingCustomizer.class) | ||
| public final class Slf4jSimpleLoggingCustomizer implements LoggingCustomizer { | ||
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| // org.slf4j package name in the constants will be shaded too |
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| // trigger loading the provider from the agent CL | ||
| LoggerFactory.getILoggerFactory(); |
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do we still need to trigger loading?
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Yes, probably - the first usage of any slf4j API method causes it to load the actual implementation using SPI; and since it uses the context CL, it might not find the actual implementation. It's safer to just pre-load it here.
...ogging-simple/src/main/java/io/opentelemetry/javaagent/logging/simple/Slf4jSimpleLogger.java
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Co-authored-by: Trask Stalnaker <trask.stalnaker@gmail.com>
laurit
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Sep 9, 2022
| mergeServiceFiles() | ||
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| // Prevents configuration naming conflict with other SLF4J instances | ||
| relocate("org.slf4j", "io.opentelemetry.javaagent.logging.simple.slf4j") |
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it might be better to continue using io.opentelemetry.javaagent.slf4j as there are people who are using stuff like -Dio.opentelemetry.javaagent.slf4j.simpleLogger.defaultLogLevel=off and -Dio.opentelemetry.javaagent.slf4j.simpleLogger.logFile=...
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Hm, you're right. I dislike the fact that we're exposing the javaagent internals this way, but since we don't have a better logging story I suppose it is a necessity for now. I'll revert to the previous package name.
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* Encapsulate actual logging implementation better * Apply suggestions from code review Co-authored-by: Trask Stalnaker <trask.stalnaker@gmail.com> * code review comments * revert to the old slf4j package name * spotless Co-authored-by: Trask Stalnaker <trask.stalnaker@gmail.com>
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* Encapsulate actual logging implementation better * Apply suggestions from code review Co-authored-by: Trask Stalnaker <trask.stalnaker@gmail.com> * code review comments * revert to the old slf4j package name * spotless Co-authored-by: Trask Stalnaker <trask.stalnaker@gmail.com>
LironKS
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* Encapsulate actual logging implementation better * Apply suggestions from code review Co-authored-by: Trask Stalnaker <trask.stalnaker@gmail.com> * code review comments * revert to the old slf4j package name * spotless Co-authored-by: Trask Stalnaker <trask.stalnaker@gmail.com>
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Depends on #6499
This PR introduces a new
javaagent-internal-logging-simplemodule that encapsulates the logging implementation completely (well, almost, except for a couple of tests). Slf4j is removed from bootstrap dependencies, shading relocation lists, and from the agent's "public" (as in, publicly accessible) space.