add toString for the baggage processor

Author: SylvainJuge

baggage-processor/src/main/java/io/opentelemetry/contrib/baggage/processor/BaggageLogRecordProcessor.java

@@ -46,4 +46,9 @@ public void onEmit(Context context, ReadWriteLogRecord logRecord) {
               }
             });
   }
+
+  @Override
+  public String toString() {
+    return "BaggageLogRecordProcessor{" + "baggageKeyPredicate=" + baggageKeyPredicate + '}';
+  }
 }

baggage-processor/src/main/java/io/opentelemetry/contrib/baggage/processor/BaggageSpanProcessor.java

@@ -58,4 +58,9 @@ public void onEnd(ReadableSpan span) {}
   public boolean isEndRequired() {
     return false;
   }
+
+  @Override
+  public String toString() {
+    return "BaggageSpanProcessor{" + "baggageKeyPredicate=" + baggageKeyPredicate + '}';
+  }
 }

baggage-processor/src/test/java/io/opentelemetry/contrib/baggage/processor/BaggageLogRecordComponentProviderTest.java

@@ -30,6 +30,9 @@ void declarativeConfig() {
                 new ByteArrayInputStream(yaml.getBytes(StandardCharsets.UTF_8)))
             .getSdk();
 
-    assertThat(sdk).asString().contains("BaggageLogRecordProcessor");
+    assertThat(sdk)
+        .asString()
+        .contains("BaggageLogRecordProcessor")
+        .containsPattern("IncludeExcludePredicate.*, included=\\[foo], excluded=\\[bar]");
   }
 }

baggage-processor/src/test/java/io/opentelemetry/contrib/baggage/processor/BaggageSpanComponentProviderTest.java

@@ -30,6 +30,9 @@ void declarativeConfig() {
                 new ByteArrayInputStream(yaml.getBytes(StandardCharsets.UTF_8)))
             .getSdk();
 
-    assertThat(sdk).asString().contains("BaggageSpanProcessor");
+    assertThat(sdk)
+        .asString()
+        .contains("BaggageSpanProcessor")
+        .containsPattern("IncludeExcludePredicate.*, included=\\[foo], excluded=\\[bar]");
   }
 }