From 8f7d7eac95cc606b5c5716612d0b08c41f951167 Mon Sep 17 00:00:00 2001
From: Google Team Member <genai-sdk-bot@google.com>
Date: Wed, 28 Jan 2026 13:18:35 -0800
Subject: [PATCH] feat: Add event compaction config to InvocationContext

This CL integrates event compaction configuration into the InvocationContext, allowing agent to access the configs during execution.

PiperOrigin-RevId: 862366865
---
 .../google/adk/agents/InvocationContext.java  | 24 +++++++++++++++++++
 .../java/com/google/adk/runner/Runner.java    |  1 +
 2 files changed, 25 insertions(+)

diff --git a/core/src/main/java/com/google/adk/agents/InvocationContext.java b/core/src/main/java/com/google/adk/agents/InvocationContext.java
index ace00db4c..ed9b21062 100644
--- a/core/src/main/java/com/google/adk/agents/InvocationContext.java
+++ b/core/src/main/java/com/google/adk/agents/InvocationContext.java
@@ -25,6 +25,7 @@
 import com.google.adk.plugins.PluginManager;
 import com.google.adk.sessions.BaseSessionService;
 import com.google.adk.sessions.Session;
+import com.google.adk.summarizer.EventsCompactionConfig;
 import com.google.common.collect.ImmutableSet;
 import com.google.errorprone.annotations.CanIgnoreReturnValue;
 import com.google.errorprone.annotations.InlineMe;
@@ -53,6 +54,7 @@ public class InvocationContext {
   private final Map<String, BaseAgentState> agentStates;
   private final Map<String, Boolean> endOfAgents;
   private final ResumabilityConfig resumabilityConfig;
+  @Nullable private final EventsCompactionConfig eventsCompactionConfig;
   private final InvocationCostManager invocationCostManager;
 
   private Optional<String> branch;
@@ -76,6 +78,7 @@ protected InvocationContext(Builder builder) {
     this.agentStates = builder.agentStates;
     this.endOfAgents = builder.endOfAgents;
     this.resumabilityConfig = builder.resumabilityConfig;
+    this.eventsCompactionConfig = builder.eventsCompactionConfig;
     this.invocationCostManager = builder.invocationCostManager;
   }
 
@@ -356,6 +359,11 @@ public boolean isResumable() {
     return resumabilityConfig.isResumable();
   }
 
+  /** Returns the events compaction configuration for the current agent run. */
+  public Optional<EventsCompactionConfig> eventsCompactionConfig() {
+    return Optional.ofNullable(eventsCompactionConfig);
+  }
+
   /** Returns whether to pause the invocation right after this [event]. */
   public boolean shouldPauseInvocation(Event event) {
     if (!isResumable()) {
@@ -427,6 +435,7 @@ private Builder(InvocationContext context) {
       this.agentStates = new ConcurrentHashMap<>(context.agentStates);
       this.endOfAgents = new ConcurrentHashMap<>(context.endOfAgents);
       this.resumabilityConfig = context.resumabilityConfig;
+      this.eventsCompactionConfig = context.eventsCompactionConfig;
       this.invocationCostManager = context.invocationCostManager;
     }
 
@@ -446,6 +455,7 @@ private Builder(InvocationContext context) {
     private Map<String, BaseAgentState> agentStates = new ConcurrentHashMap<>();
     private Map<String, Boolean> endOfAgents = new ConcurrentHashMap<>();
     private ResumabilityConfig resumabilityConfig = new ResumabilityConfig();
+    @Nullable private EventsCompactionConfig eventsCompactionConfig;
     private InvocationCostManager invocationCostManager = new InvocationCostManager();
 
     /**
@@ -670,6 +680,18 @@ public Builder resumabilityConfig(ResumabilityConfig resumabilityConfig) {
       return this;
     }
 
+    /**
+     * Sets the events compaction configuration for the current agent run.
+     *
+     * @param eventsCompactionConfig the events compaction configuration.
+     * @return this builder instance for chaining.
+     */
+    @CanIgnoreReturnValue
+    public Builder eventsCompactionConfig(@Nullable EventsCompactionConfig eventsCompactionConfig) {
+      this.eventsCompactionConfig = eventsCompactionConfig;
+      return this;
+    }
+
     /**
      * Builds the {@link InvocationContext} instance.
      *
@@ -705,6 +727,7 @@ public boolean equals(Object o) {
         && Objects.equals(agentStates, that.agentStates)
         && Objects.equals(endOfAgents, that.endOfAgents)
         && Objects.equals(resumabilityConfig, that.resumabilityConfig)
+        && Objects.equals(eventsCompactionConfig, that.eventsCompactionConfig)
         && Objects.equals(invocationCostManager, that.invocationCostManager);
   }
 
@@ -727,6 +750,7 @@ public int hashCode() {
         agentStates,
         endOfAgents,
         resumabilityConfig,
+        eventsCompactionConfig,
         invocationCostManager);
   }
 }
diff --git a/core/src/main/java/com/google/adk/runner/Runner.java b/core/src/main/java/com/google/adk/runner/Runner.java
index 574c3dcf0..66bb58606 100644
--- a/core/src/main/java/com/google/adk/runner/Runner.java
+++ b/core/src/main/java/com/google/adk/runner/Runner.java
@@ -634,6 +634,7 @@ private InvocationContext.Builder newInvocationContextBuilder(Session session) {
         .agent(rootAgent)
         .session(session)
         .resumabilityConfig(this.resumabilityConfig)
+        .eventsCompactionConfig(this.eventsCompactionConfig)
         .agent(this.findAgentToRun(session, rootAgent));
   }