removed decrement and added attributes

core/src/commonMain/kotlin/com/xebia/functional/xef/metrics/CounterMetric.kt

@@ -3,5 +3,5 @@ package com.xebia.functional.xef.metrics
 interface CounterMetric {
   fun increment(n: Long)
 
-  fun decrement(n: Long)
+  fun increment(n: Long, attributes: Map<String, String>)
 }

core/src/commonMain/kotlin/com/xebia/functional/xef/metrics/InMemoryCounterMetric.kt

@@ -11,8 +11,8 @@ class InMemoryCounterMetric(val name: String, val logger: KLogger) : CounterMetr
     logger.info { "Counter $name incremented to ${count.get()}" }
   }
 
-  override fun decrement(n: Long) {
-    count.decrementAndGet()
-    logger.info { "Counter $name decremented to ${count.get()}" }
+  override fun increment(n: Long, attributes: Map<String, String>) {
+    count.addAndGet(n)
+    logger.info { "Counter $name incremented to ${count.get()} with those attributes: ${attributes.entries.joinToString( ",")}" }
   }
 }

integrations/opentelemetry/src/main/kotlin/com/xebia/functional/xef/opentelemetry/OpenTelemetryCounter.kt

@@ -1,14 +1,17 @@
 package com.xebia.functional.xef.opentelemetry
 
 import com.xebia.functional.xef.metrics.CounterMetric
+import io.opentelemetry.api.common.Attributes
 
 class OpenTelemetryCounter(private val longCounter: io.opentelemetry.api.metrics.LongCounter) :
   CounterMetric {
   override fun increment(n: Long) {
     longCounter.add(n)
   }
 
-  override fun decrement(n: Long) {
-    longCounter.add(n)
+  override fun increment(n: Long, attributes: Map<String, String>) {
+    val attributesBuilder = Attributes.builder()
+    attributes.forEach { (k, v) -> attributesBuilder.put(k, v) }
+    longCounter.add(n, attributesBuilder.build())
   }
 }