[docs] fill missing c++ logs documentation

content/en/docs/languages/cpp/instrumentation.md

@@ -233,9 +233,54 @@ p->AddView(std::move(observable_instrument_selector), std::move(observable_meter
 
 ## Logs
 
-The documentation for the logs API & SDK is missing, you can help make it
-available by
-[editing this page](https://github.com/open-telemetry/opentelemetry.io/edit/main/content/en/docs/languages/cpp/instrumentation.md).
+### Initialize exporter and processor
+
+Initialize an exporter and processor. In this case, you initialize an OStream
+Exporter that prints log records to stdout by default. The processor is
+responsible for conversion of LogRecords to exportable representation before
+they reach the exporter.
+
+```cpp
+auto exporter = std::unique_ptr<opentelemetry::sdk::logs::LogRecordExporter>(
+    new opentelemetry::exporters::logs::OStreamLogRecordExporter());
+auto processor = std::unique_ptr<opentelemetry::sdk::logs::LogRecordProcessor>(
+    new opentelemetry::sdk::logs::SimpleLogRecordExportProcessor(
+        std::move(exporter)));
+```
+
+### Register a logger provider
+
+Create a `LoggerProvider` and register it as the global provider. Use it to
+obtain `Logger` objects. Loggers can be named to identify the emitting
+components.
+
+```cpp
+auto provider = std::shared_ptr<opentelemetry::logs::LoggerProvider>(
+    new opentelemetry::sdk::logs::LoggerProvider(std::move(processor)));
+opentelemetry::logs::Provider::SetLoggerProvider(provider);
+auto logger = provider->GetLogger(name, "1.0.0");
+```
+
+### Emit a log record
+
+Use the acquired logger to emit structured log records. Optionally, enrich the
+log records with trace context by passing the trace ID, span ID, and flags, or
+other attributes explicitly. The supported severity values include: `kTrace`,
+`kDebug`, `kInfo`, `kWarn`, `kError`, `kFatal`.
+
+```cpp
+logger->Info("Handling request");
+auto span = get_tracer()->StartSpan("HandleRequest");
+auto ctx = span->GetContext();
+// enrich log with the trace context
+logger->Info("Request failed", ctx.trace_id(), ctx.span_id(), ctx.trace_flags());
+```
+
+### Further reading
+
+- [Logs API](https://opentelemetry.io/docs/specs/otel/logs/api/)
+- [Logs SDK](https://opentelemetry.io/docs/specs/otel/logs/sdk/)
+- [Sample Logs Example](https://github.com/open-telemetry/opentelemetry-cpp/tree/main/examples/logs_simple)
 
 ## Next steps
 

static/refcache.json

@@ -10783,6 +10783,10 @@
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@@ -19995,6 +19999,14 @@
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   },
+  "https://opentelemetry.io/docs/specs/otel/logs/api/": {
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