Merge RC1 into planner

.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-    ".": "0.9.0"
+    ".": "1.0.0-rc.1"
 }

CHANGELOG.md

@@ -1,5 +1,48 @@
 # Changelog
 
+## [1.0.0-rc.1](https://github.com/google/adk-java/compare/v0.9.0...v1.0.0-rc.1) (2026-03-20)
+
+
+### ⚠ BREAKING CHANGES
+
+* remove McpToolset constructors taking Optional parameters
+* remove deprecated Example processor
+
+### Features
+
+* add handling the a2a metadata in the RemoteA2AAgent; Add the enum type for the metadata keys ([e51f911](https://github.com/google/adk-java/commit/e51f9112050955657da0dfc3aedc00f90ad739ec))
+* add type-safe runAsync methods to BaseTool ([b8cb7e2](https://github.com/google/adk-java/commit/b8cb7e2db6d5ce20f4d7a1b237bdc155563cf4bd))
+* Enhance LangChain4j to support MCP tools with parametersJsonSchema ([2c71ba1](https://github.com/google/adk-java/commit/2c71ba1332e052189115cd4644b7a473c31ed414))
+* fixing context propagation for agent transfers ([9a08076](https://github.com/google/adk-java/commit/9a080763d83c319f539d1bacac4595d13b299e7e))
+* Implement basic version of BigQuery Agent Analytics Plugin ([c8ab0f9](https://github.com/google/adk-java/commit/c8ab0f96b09a6c9636728d634c62695fcd622246))
+* init AGENTS.md file ([7ebeb07](https://github.com/google/adk-java/commit/7ebeb07bf2ee72475484d8a31ccf7b4c601dda96))
+* Propagating the otel context ([8556d4a](https://github.com/google/adk-java/commit/8556d4af16ff04c6e3b678dcfc3d4bb232abc550))
+* remove McpToolset constructors taking Optional parameters ([dbb1394](https://github.com/google/adk-java/commit/dbb139439d38157b4b9af38c52824b1e8405a495))
+* Return List instead of ImmutableList in CallbackUtil methods ([8af5e03](https://github.com/google/adk-java/commit/8af5e03811dfd548830df43103c81a592c8bf361))
+* update requestedAuthConfigs and its builder to be of general Map types ([f145c74](https://github.com/google/adk-java/commit/f145c744482b6b25f29a0b718bd452065e39d930))
+* Update return type of App.plugins() from ImmutableList to List ([8ba4bfe](https://github.com/google/adk-java/commit/8ba4bfed3fa7045f3344329de7a39acddc64ee30))
+* Update return type of toolsets() from ImmutableList to List ([cd56902](https://github.com/google/adk-java/commit/cd56902b803d4f7a1f3c718529842823d9e4370a))
+* update Session.state() and its builder to be of general Map types ([4b9b99a](https://github.com/google/adk-java/commit/4b9b99ae7149a465ba2ae9b7496e01f669786553))
+* update stateDelta builder input to Map from ConcurrentMap ([0d1e5c7](https://github.com/google/adk-java/commit/0d1e5c7b0c42cea66b178cf8fedf08a8c20f7fd0))
+
+
+### Bug Fixes
+
+* fix null handling in runAsyncImpl ([567fdf0](https://github.com/google/adk-java/commit/567fdf048fee49afc86ca5d7d35f55424a6016ba))
+* improve processRequest_concurrentReadAndWrite_noException test case ([4eb3613](https://github.com/google/adk-java/commit/4eb3613b65cb1334e9432960d0f864ef09829c23))
+* include saveArtifact invocations in event chain ([551c31f](https://github.com/google/adk-java/commit/551c31f495aafde8568461cc0aa0973d7df7e5ac))
+* prevent ConcurrentModificationException when session events are modified by another thread during iteration ([fca43fb](https://github.com/google/adk-java/commit/fca43fbb9684ec8d080e437761f6bb4e38adf255))
+* Relaxing constraints for output schema ([d7e03ee](https://github.com/google/adk-java/commit/d7e03eeb067b83abd2afa3ea9bb5fc1c16143245))
+* Removing deprecated methods in Runner ([0af82e6](https://github.com/google/adk-java/commit/0af82e61a3c0dbbd95166a10b450cb507115ab60))
+* Use ConcurrentHashMap in InvocationReplayState ([94de7f1](https://github.com/google/adk-java/commit/94de7f199f86b39bdb7cce6e9800eb05008a8953)), closes [#1009](https://github.com/google/adk-java/issues/1009)
+* workaround for the client config streaming settings are not respected ([#983](https://github.com/google/adk-java/issues/983)) ([3ba04d3](https://github.com/google/adk-java/commit/3ba04d33dc8f2ef8b151abe1be4d1c8b7afcc25a))
+
+
+### Miscellaneous Chores
+
+* remove deprecated Example processor ([28a8cd0](https://github.com/google/adk-java/commit/28a8cd04ca9348dbe51a15d2be3a2b5307394174))
+* set version to 1.0.0-rc.1 ([dc5d794](https://github.com/google/adk-java/commit/dc5d794c066571c7d87f006767bd32298e2a3ba8))
+
 ## [0.9.0](https://github.com/google/adk-java/compare/v0.8.0...v0.9.0) (2026-03-13)
 
 

README.md

@@ -50,13 +50,13 @@ If you're using Maven, add the following to your dependencies:
 <dependency>
   <groupId>com.google.adk</groupId>
   <artifactId>google-adk</artifactId>
-  <version>0.9.0</version>
+  <version>1.0.0-rc.1</version>
 </dependency>
 <!-- Dev UI -->
 <dependency>
     <groupId>com.google.adk</groupId>
     <artifactId>google-adk-dev</artifactId>
-    <version>0.9.0</version>
+    <version>1.0.0-rc.1</version>
 </dependency>
 ```
 

a2a/pom.xml

@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.google.adk</groupId>
     <artifactId>google-adk-parent</artifactId>
-    <version>0.9.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+    <version>1.0.1-rc.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
   </parent>
 
   <artifactId>google-adk-a2a</artifactId>

contrib/firestore-session-service/pom.xml

@@ -20,7 +20,7 @@
     <parent>
         <groupId>com.google.adk</groupId>
         <artifactId>google-adk-parent</artifactId>
-        <version>0.9.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+        <version>1.0.1-rc.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
         <relativePath>../../pom.xml</relativePath>
     </parent>
 

contrib/langchain4j/pom.xml

@@ -20,7 +20,7 @@
     <parent>
         <groupId>com.google.adk</groupId>
         <artifactId>google-adk-parent</artifactId>
-        <version>0.9.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+        <version>1.0.1-rc.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
         <relativePath>../../pom.xml</relativePath>
     </parent>
 

contrib/samples/a2a_basic/pom.xml

@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.google.adk</groupId>
     <artifactId>google-adk-samples</artifactId>
-    <version>0.9.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+    <version>1.0.1-rc.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
     <relativePath>..</relativePath>
   </parent>
 

contrib/samples/a2a_server/pom.xml

@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.google.adk</groupId>
     <artifactId>google-adk-samples</artifactId>
-    <version>0.9.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+    <version>1.0.1-rc.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
     <relativePath>..</relativePath>
   </parent>
 

contrib/samples/configagent/pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <groupId>com.google.adk</groupId>
         <artifactId>google-adk-samples</artifactId>
-        <version>0.9.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+        <version>1.0.1-rc.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
         <relativePath>..</relativePath>
     </parent>
 

contrib/samples/helloworld/pom.xml

@@ -20,7 +20,7 @@
     <parent>
         <groupId>com.google.adk</groupId>
         <artifactId>google-adk-samples</artifactId>
-        <version>0.9.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+        <version>1.0.1-rc.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
         <relativePath>..</relativePath>
     </parent>
 

contrib/samples/mcpfilesystem/pom.xml

@@ -20,7 +20,7 @@
     <parent>
         <groupId>com.google.adk</groupId>
         <artifactId>google-adk-parent</artifactId>
-        <version>0.9.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+        <version>1.0.1-rc.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
         <relativePath>../../..</relativePath>
     </parent>
 

contrib/samples/pom.xml

@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.google.adk</groupId>
     <artifactId>google-adk-parent</artifactId>
-    <version>0.9.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+    <version>1.0.1-rc.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
     <relativePath>../..</relativePath>
   </parent>
 

contrib/spring-ai/pom.xml

@@ -20,7 +20,7 @@
     <parent>
         <groupId>com.google.adk</groupId>
         <artifactId>google-adk-parent</artifactId>
-        <version>0.9.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+        <version>1.0.1-rc.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
         <relativePath>../../pom.xml</relativePath>
     </parent>
 

core/pom.xml

@@ -20,7 +20,7 @@
   <parent>
     <groupId>com.google.adk</groupId>
     <artifactId>google-adk-parent</artifactId>
-    <version>0.9.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
+    <version>1.0.1-rc.1-SNAPSHOT</version><!-- {x-version-update:google-adk:current} -->
   </parent>
 
   <artifactId>google-adk</artifactId>

core/src/main/java/com/google/adk/Version.java

@@ -22,7 +22,7 @@
  */
 public final class Version {
   // Don't touch this, release-please should keep it up to date.
-  public static final String JAVA_ADK_VERSION = "0.9.0"; // x-release-please-released-version
+  public static final String JAVA_ADK_VERSION = "1.0.0-rc.1"; // x-release-please-released-version
 
   private Version() {}
 }

core/src/main/java/com/google/adk/agents/BaseAgent.java

@@ -529,7 +529,8 @@ public B beforeAgentCallback(BeforeAgentCallback beforeAgentCallback) {
 
     @CanIgnoreReturnValue
     public B beforeAgentCallback(List<Callbacks.BeforeAgentCallbackBase> beforeAgentCallback) {
-      this.beforeAgentCallback = CallbackUtil.getBeforeAgentCallbacks(beforeAgentCallback);
+      this.beforeAgentCallback =
+          ImmutableList.copyOf(CallbackUtil.getBeforeAgentCallbacks(beforeAgentCallback));
       return self();
     }
 
@@ -541,7 +542,8 @@ public B afterAgentCallback(AfterAgentCallback afterAgentCallback) {
 
     @CanIgnoreReturnValue
     public B afterAgentCallback(List<Callbacks.AfterAgentCallbackBase> afterAgentCallback) {
-      this.afterAgentCallback = CallbackUtil.getAfterAgentCallbacks(afterAgentCallback);
+      this.afterAgentCallback =
+          ImmutableList.copyOf(CallbackUtil.getAfterAgentCallbacks(afterAgentCallback));
       return self();
     }
 

core/src/main/java/com/google/adk/agents/CallbackUtil.java

@@ -42,7 +42,7 @@ public final class CallbackUtil {
    * @return normalized async callbacks, or empty list if input is null.
    */
   @CanIgnoreReturnValue
-  public static ImmutableList<BeforeAgentCallback> getBeforeAgentCallbacks(
+  public static List<BeforeAgentCallback> getBeforeAgentCallbacks(
       List<BeforeAgentCallbackBase> beforeAgentCallbacks) {
     return getCallbacks(
         beforeAgentCallbacks,
@@ -59,7 +59,7 @@ public static ImmutableList<BeforeAgentCallback> getBeforeAgentCallbacks(
    * @return normalized async callbacks, or empty list if input is null.
    */
   @CanIgnoreReturnValue
-  public static ImmutableList<AfterAgentCallback> getAfterAgentCallbacks(
+  public static List<AfterAgentCallback> getAfterAgentCallbacks(
       List<AfterAgentCallbackBase> afterAgentCallback) {
     return getCallbacks(
         afterAgentCallback,

core/src/main/java/com/google/adk/apps/App.java

@@ -64,7 +64,7 @@ public BaseAgent rootAgent() {
     return rootAgent;
   }
 
-  public ImmutableList<? extends Plugin> plugins() {
+  public List<? extends Plugin> plugins() {
     return plugins;
   }
 

core/src/main/java/com/google/adk/events/EventActions.java

@@ -41,7 +41,7 @@ public class EventActions extends JsonBaseModel {
   private Set<String> deletedArtifactIds;
   private @Nullable String transferToAgent;
   private @Nullable Boolean escalate;
-  private ConcurrentMap<String, ConcurrentMap<String, Object>> requestedAuthConfigs;
+  private ConcurrentMap<String, Map<String, Object>> requestedAuthConfigs;
   private ConcurrentMap<String, ToolConfirmation> requestedToolConfirmations;
   private boolean endOfAgent;
   private @Nullable EventCompaction compaction;
@@ -139,13 +139,17 @@ public void setEscalate(@Nullable Boolean escalate) {
   }
 
   @JsonProperty("requestedAuthConfigs")
-  public ConcurrentMap<String, ConcurrentMap<String, Object>> requestedAuthConfigs() {
+  public Map<String, Map<String, Object>> requestedAuthConfigs() {
     return requestedAuthConfigs;
   }
 
   public void setRequestedAuthConfigs(
-      ConcurrentMap<String, ConcurrentMap<String, Object>> requestedAuthConfigs) {
-    this.requestedAuthConfigs = requestedAuthConfigs;
+      Map<String, ? extends Map<String, Object>> requestedAuthConfigs) {
+    if (requestedAuthConfigs == null) {
+      this.requestedAuthConfigs = new ConcurrentHashMap<>();
+    } else {
+      this.requestedAuthConfigs = new ConcurrentHashMap<>(requestedAuthConfigs);
+    }
   }
 
   @JsonProperty("requestedToolConfirmations")
@@ -248,7 +252,7 @@ public static class Builder {
     private Set<String> deletedArtifactIds;
     private @Nullable String transferToAgent;
     private @Nullable Boolean escalate;
-    private ConcurrentMap<String, ConcurrentMap<String, Object>> requestedAuthConfigs;
+    private ConcurrentMap<String, Map<String, Object>> requestedAuthConfigs;
     private ConcurrentMap<String, ToolConfirmation> requestedToolConfirmations;
     private boolean endOfAgent = false;
     private @Nullable EventCompaction compaction;
@@ -328,8 +332,12 @@ public Builder escalate(boolean escalate) {
     @CanIgnoreReturnValue
     @JsonProperty("requestedAuthConfigs")
     public Builder requestedAuthConfigs(
-        ConcurrentMap<String, ConcurrentMap<String, Object>> value) {
-      this.requestedAuthConfigs = value;
+        @Nullable Map<String, ? extends Map<String, Object>> value) {
+      if (value == null) {
+        this.requestedAuthConfigs = new ConcurrentHashMap<>();
+      } else {
+        this.requestedAuthConfigs = new ConcurrentHashMap<>(value);
+      }
       return this;
     }
 

core/src/main/java/com/google/adk/flows/llmflows/BaseLlmFlow.java

@@ -692,9 +692,14 @@ private Flowable<Event> buildPostprocessingEvents(
                 Optional<Event> toolConfirmationEvent =
                     Functions.generateRequestConfirmationEvent(
                         context, modelResponseEvent, functionResponseEvent);
-                return toolConfirmationEvent.isPresent()
-                    ? Flowable.just(toolConfirmationEvent.get(), functionResponseEvent)
-                    : Flowable.just(functionResponseEvent);
+                List<Event> events = new ArrayList<>();
+                toolConfirmationEvent.ifPresent(events::add);
+                events.add(functionResponseEvent);
+                OutputSchema.getStructuredModelResponse(functionResponseEvent)
+                    .ifPresent(
+                        json ->
+                            events.add(OutputSchema.createFinalModelResponseEvent(context, json)));
+                return Flowable.fromIterable(events);
               });
     }
 

core/src/main/java/com/google/adk/flows/llmflows/Basic.java

@@ -19,6 +19,7 @@
 import com.google.adk.agents.InvocationContext;
 import com.google.adk.agents.LlmAgent;
 import com.google.adk.models.LlmRequest;
+import com.google.adk.utils.ModelNameUtils;
 import com.google.common.collect.ImmutableList;
 import com.google.genai.types.GenerateContentConfig;
 import com.google.genai.types.LiveConnectConfig;
@@ -60,7 +61,15 @@ public Single<RequestProcessor.RequestProcessingResult> processRequest(
                     .orElseGet(() -> GenerateContentConfig.builder().build()))
             .liveConnectConfig(liveConnectConfigBuilder.build());
 
-    agent.outputSchema().ifPresent(builder::outputSchema);
+    agent
+        .outputSchema()
+        .ifPresent(
+            outputSchema -> {
+              if (agent.toolsUnion().isEmpty()
+                  || ModelNameUtils.canUseOutputSchemaWithTools(modelName)) {
+                builder.outputSchema(outputSchema);
+              }
+            });
     return Single.just(
         RequestProcessor.RequestProcessingResult.create(builder.build(), ImmutableList.of()));
   }