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core/src/main/kotlin/io/github/llmagentbuilder/core/observation/InstrumentedChatClient.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,98 @@ | ||
| package io.github.llmagentbuilder.core.observation | ||
|
|
||
| import com.fasterxml.jackson.databind.ObjectMapper | ||
| import com.fasterxml.jackson.databind.SerializationFeature | ||
| import io.micrometer.core.instrument.Counter | ||
| import io.micrometer.core.instrument.MeterRegistry | ||
| import io.micrometer.observation.ObservationRegistry | ||
| import org.slf4j.LoggerFactory | ||
| import org.springframework.ai.chat.ChatClient | ||
| import org.springframework.ai.chat.ChatResponse | ||
| import org.springframework.ai.chat.prompt.Prompt | ||
|
|
||
| class InstrumentedChatClient( | ||
| private val chatClient: ChatClient, | ||
| private val observationRegistry: ObservationRegistry? = null, | ||
| private val meterRegistry: MeterRegistry? = null, | ||
| ) : ChatClient { | ||
| private val objectMapper = | ||
| ObjectMapper().configure(SerializationFeature.INDENT_OUTPUT, true) | ||
| private val logger = LoggerFactory.getLogger("chatClient.debugger") | ||
|
|
||
| override fun call(prompt: Prompt): ChatResponse { | ||
| val action = { chatClient.call(prompt) } | ||
| val response = observationRegistry?.let { registry -> | ||
| instrumentedCall(prompt, action, registry) | ||
| } ?: action.invoke() | ||
| meterRegistry?.run { | ||
| updateMetrics(response, this) | ||
| } | ||
| return response | ||
| } | ||
|
|
||
| private fun instrumentedCall( | ||
| prompt: Prompt, | ||
| action: () -> ChatResponse, | ||
| registry: ObservationRegistry | ||
| ): ChatResponse { | ||
| val observationContext = | ||
| ChatClientRequestObservationContext(prompt) | ||
| val observation = | ||
| ChatClientObservationDocumentation.CHAT_CLIENT_CALL.observation( | ||
| null, | ||
| DefaultChatClientObservationConvention(), | ||
| { observationContext }, | ||
| registry | ||
| ).start() | ||
| return try { | ||
| observation.openScope().use { | ||
| debugJson("Prompt", prompt) | ||
| val response = action.invoke() | ||
| debugJson("Response", response) | ||
| observationContext.setResponse(response) | ||
| response | ||
| } | ||
| } catch (e: Exception) { | ||
| observation.error(e) | ||
| throw e | ||
| } finally { | ||
| observation.stop() | ||
| } | ||
| } | ||
|
|
||
| private fun updateMetrics( | ||
| chatResponse: ChatResponse, | ||
| registry: MeterRegistry, | ||
| ) { | ||
| chatResponse.metadata?.usage?.run { | ||
| listOf( | ||
| "prompt" to { this.promptTokens ?: 0 }, | ||
| "generation" to { this.generationTokens ?: 0 }, | ||
| "total" to { this.totalTokens ?: 0 }, | ||
| ).forEach { (name, provider) -> | ||
| val counter = Counter.builder("agent.$name.tokens.count") | ||
| .register(registry) | ||
| counter.increment(provider.invoke().toDouble()) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| private fun debugJson(type: String, input: Any) { | ||
| if (!logger.isDebugEnabled) { | ||
| return | ||
| } | ||
| val json = try { | ||
| objectMapper.writeValueAsString(input) | ||
| } catch (e: Exception) { | ||
| input.toString() | ||
| } | ||
| val message = | ||
| """ | ||
| ===== $type ===== | ||
| $json | ||
| ================= | ||
| """.trimIndent() | ||
| logger.debug(message) | ||
| } | ||
| } |