Cleanup readmes (#5263)

api/all/README.md

@@ -1,22 +1,7 @@
 # OpenTelemetry API
 
-[![Javadocs][javadoc-image]][javadoc-url]
+#### API Misuse Logging
 
-* The code in this module is the implementation of stable OpenTelemetry signals.
-* Semantic Conventions for OpenTelemetry are in the `opentelemetry-semconv` module.
-* The default implementation of the interfaces in this module is in the OpenTelemetry SDK module.
-* The interfaces in this directory can be implemented to create alternative
-  implementations of the OpenTelemetry library.
+API misuse information is logged under logger named `io.opentelemetry.ApiUsageLogging`.
 
-[javadoc-image]: https://www.javadoc.io/badge/io.opentelemetry/opentelemetry-api.svg
-[javadoc-url]: https://www.javadoc.io/doc/io.opentelemetry/opentelemetry-api
-
----
-#### Running micro-benchmarks
-From the root of the repo run `./gradlew clean :api:jmh` to run all the benchmarks
-or run `./gradlew clean :api:jmh -PjmhIncludeSingleClass=<ClassNameHere>`
-to run a specific benchmark class.
-
----
-#### Logging API mis-use
-Define `logging.level.io.opentelemetry.ApiUsageLogging=TRACE` to enable TRACE logging for invalid API calls.
+To access, enable `FINEST` level logs.

exporters/jaeger-proto/README.md

@@ -1,8 +1,3 @@
 # OpenTelemetry - Jaeger Proto (DEPRECATED)
 
-> **NOTICE**: External use of this artifact is deprecated. It will not have any changes in the future but will continue to be published as is until 2.0.0.
-
-[![Javadocs][javadoc-image]][javadoc-url]
-
-[javadoc-image]: https://www.javadoc.io/badge/io.opentelemetry/opentelemetry-exporter-jaeger-proto.svg
-[javadoc-url]: https://www.javadoc.io/doc/io.opentelemetry/opentelemetry-exporter-jaeger-proto
+> **NOTICE**: External use of this artifact is deprecated.

exporters/zipkin/README.md

@@ -1,33 +1,7 @@
 # OpenTelemetry - Zipkin Span Exporter
 
-[![Javadocs][javadoc-image]][javadoc-url]
-
-This is an OpenTelemetry exporter that sends span data using the [io.zipkin.reporter2:zipkin-reporter](https://github.com/openzipkin/zipkin-reporter-java) library.
-
-By default, this POSTs json in [Zipkin format](https://zipkin.io/zipkin-api/#/default/post_spans) to
-a specified HTTP URL. This could be to a [Zipkin](https://zipkin.io) service, or anything that
-consumes the same format.
-
-You can alternatively use other formats, such as protobuf, or override the `Sender` to use a non-HTTP transport, such as Kafka.
-
-## Configuration
-
-The Zipkin span exporter can be configured programmatically.
-
-An example of simple Zipkin exporter initialization. In this case
-spans will be sent to a Zipkin endpoint running on `localhost`:
-
-```java
-ZipkinSpanExporter exporter =
-        ZipkinSpanExporter.builder()
-            .setEndpoint("http://localhost/api/v2/spans")
-            .build();
-```
-
 ## Attribution
 
 The code in this module is based on the [OpenCensus Zipkin exporter][oc-origin] code.
 
-[javadoc-image]: https://www.javadoc.io/badge/io.opentelemetry/opentelemetry-exporter-zipkin.svg
-[javadoc-url]: https://www.javadoc.io/doc/io.opentelemetry/opentelemetry-exporter-zipkin
 [oc-origin]: https://github.com/census-instrumentation/opencensus-java/

opencensus-shim/README.md

@@ -1,7 +1,5 @@
 # OpenTelemetry OpenCensus Shim
 
-[![Javadocs][javadoc-image]][javadoc-url]
-
 The OpenCensus shim allows applications and libraries that are instrumented
 with OpenTelemetry, but depend on other libraries instrumented with OpenCensus,
 to export trace spans from both OpenTelemetry and OpenCensus with the correct
@@ -24,33 +22,24 @@ To allow the shim to work for metrics, add the shim as a dependency.
 
 Applications also need to attach OpenCensus metrics to their metric readers on registration.
 
-```
+```java
+PeriodicMetricReader reader = ...
 SdkMeterProvider.builder()
-            .registerMetricReader(
-                OpenCensusMetrics.attachTo(readerFactory)
-            )
-        .buildAndRegisterGlobal();
+    .registerMetricReader(OpenCensusMetrics.attachTo(reader))
+    .buildAndRegisterGlobal();
 ```
 
 For example, if a logging exporter were configured, the following would be
 added:
 
-```
-LoggingMetricExporter metricExporter = new LoggingMetricExporter();
+```java
+LoggingMetricExporter metricExporter = LoggingMetricExporter.create();
 SdkMeterProvider.builder()
-            .registerMetricReader(
-                OpenCensusMetrics.attachTo(
-                  PeriodicMetricReader.builder(metricExporter)
-                  .newMetricReaderFactory()
-                )
-            )
-        .buildAndRegisterGlobal();
+    .registerMetricReader(OpenCensusMetrics.attachTo(PeriodicMetricReader.create(metricExporter)))
+    .build();
 ```
 
 ## Known Problems
 
 * OpenCensus links added after an OpenCensus span is created will not be
 exported, as OpenTelemetry only supports links added when a span is created.
-
-[javadoc-image]: https://www.javadoc.io/badge/io.opentelemetry/opentelemetry-opencensus-shim.svg
-[javadoc-url]: https://www.javadoc.io/doc/io.opentelemetry/opentelemetry-opencensus-shim

opentracing-shim/README.md

@@ -1,7 +1,5 @@
 # OpenTelemetry - OpenTracing Shim
 
-[![Javadocs][javadoc-image]][javadoc-url]
-
 The OpenTracing shim is a bridge layer from OpenTelemetry to the OpenTracing API.
 It takes OpenTelemetry Tracer and exposes it as an implementation of an OpenTracing Tracer.
 
@@ -21,6 +19,3 @@ Optionally register the tracer as the OpenTracing GlobalTracer:
 ```java
 GlobalTracer.registerIfAbsent(tracer);
 ```
-
-[javadoc-image]: https://www.javadoc.io/badge/io.opentelemetry/opentelemetry-opentracing-shim.svg
-[javadoc-url]: https://www.javadoc.io/doc/io.opentelemetry/opentelemetry-opentracing-shim

sdk-extensions/autoconfigure/README.md

@@ -1,7 +1,5 @@
 # OpenTelemetry SDK Autoconfigure
 
-[![Javadocs][javadoc-image]][javadoc-url]
-
 This artifact implements environment-based autoconfiguration of the OpenTelemetry SDK. This can be
 an alternative to programmatic configuration using the normal SDK builders.
 
@@ -314,6 +312,3 @@ These properties can be used to control the maximum size of spans by placing lim
 Autoconfiguration exposes SPI [hooks](../autoconfigure-spi/src/main/java/io/opentelemetry/sdk/autoconfigure/spi) for customizing behavior programmatically as needed.
 It's recommended to use the above configuration properties where possible, only implementing the SPI to add functionality not found in the
 SDK by default.
-
-[javadoc-image]: https://www.javadoc.io/badge/io.opentelemetry/opentelemetry-sdk-extension-autoconfigure.svg
-[javadoc-url]: https://www.javadoc.io/doc/io.opentelemetry/opentelemetry-sdk-extension-autoconfigure

sdk-extensions/incubator/README.md

@@ -1,7 +1,5 @@
 # OpenTelemetry Incubator
 
-[![Javadocs][javadoc-image]][javadoc-url]
-
 This artifact contains experimental code related to the trace and metric SDKs.
 
 ## View File Configuration
@@ -180,17 +178,3 @@ The /traceconfigz zPage displays information about the currently active tracing
 provides an interface for users to modify relevant parameters. Here is what the web page looks like:
 
 ![traceconfigz](img/traceconfigz.png)
-
-### Benchmark Testing
-
-This module contains two sets of benchmark tests: one for adding spans to an instance of
-TracezSpanBuckets and another for retrieving counts and spans with TracezDataAggregator. You can run
-the tests yourself with the following commands:
-
-```
-./gradlew -PjmhIncludeSingleClass=TracezSpanBucketsBenchmark clean :opentelemetry-sdk-extension-zpages:jmh
-./gradlew -PjmhIncludeSingleClass=TracezDataAggregatorBenchmark clean :opentelemetry-sdk-extension-zpages:jmh
-```
-
-[javadoc-image]: https://www.javadoc.io/badge/io.opentelemetry/opentelemetry-sdk-extension-tracing-incubator.svg
-[javadoc-url]: https://www.javadoc.io/doc/io.opentelemetry/opentelemetry-sdk-extension-tracing-incubator

sdk-extensions/jaeger-remote-sampler/README.md

@@ -1,7 +1,5 @@
 # Jaeger Remote Sampler
 
-[![Javadocs][javadoc-image]][javadoc-url]
-
 This module implements [Jaeger remote sampler](https://www.jaegertracing.io/docs/latest/sampling/#collector-sampling-configuration).
 The sampler configuration is received from collector's gRPC endpoint.
 
@@ -18,6 +16,3 @@ return SdkTracerProvider.builder()
     .setSampler(sampler)
     .build();
 ```
-
-[javadoc-image]: https://www.javadoc.io/badge/io.opentelemetry/opentelemetry-sdk-extension-jaeger-remote-sampler.svg
-[javadoc-url]: https://www.javadoc.io/doc/io.opentelemetry/opentelemetry-sdk-extension-jaeger-remote-sampler