Add Google ADK agent samples

.github/CODEOWNERS

@@ -4,4 +4,5 @@
 # someone opens a pull request.
 * @temporalio/sdk
 
+/googleadk/       @temporalio/sdk @temporalio/ai-sdk
 /workflowstreams/ @temporalio/sdk @temporalio/ai-sdk

Makefile

@@ -42,7 +42,7 @@ errcheck:
 workflowcheck:
 	@printf $(COLOR) "Run workflow check..."
 	@go install go.temporal.io/sdk/contrib/tools/workflowcheck@latest
-	@workflowcheck -show-pos ./...
+	@workflowcheck -show-pos -config workflowcheck.config.yaml ./...
 
 update-sdk:
 	$(foreach MOD_FILES_DIR,$(MOD_FILES_DIR),\

README.md

@@ -165,6 +165,13 @@ with an external configuration file, like TOML, decoupling connection settings f
   reconnecting subscriber, an external publisher, a truncating ticker, and LLM token
   streaming.
 
+- [**Google ADK agent**](./googleadk): Demonstrates running Google ADK (`adk-go`) agents
+  durably using the `googleadk` contrib integration: the agent loop runs in a Workflow, the
+  model call runs as an Activity, and a tool is exposed as a durable Activity via
+  `ActivityAsTool`. Includes scenario subdirectories for a [multi-agent](./googleadk/multiagent)
+  system, [human-in-the-loop](./googleadk/humanintheloop) tool approval (durable wait on a
+  signal), and a [continue-as-new chat](./googleadk/chat).
+
 ### Dynamic Workflow logic examples
 
 These samples demonstrate some common control flow patterns using Temporal's Go SDK API.

go.mod

@@ -17,12 +17,12 @@ require (
 	github.com/openai/openai-go v1.12.0
 	github.com/opentracing/opentracing-go v1.2.0
 	github.com/pborman/uuid v1.2.1
-	github.com/prometheus/client_golang v1.23.2
+	github.com/prometheus/client_golang v1.23.0
 	github.com/stretchr/testify v1.11.1
 	github.com/uber-go/tally/v4 v4.1.7
 	github.com/uber/jaeger-client-go v2.30.0+incompatible
 	go.opentelemetry.io/otel v1.43.0
-	go.opentelemetry.io/otel/exporters/stdout/stdouttrace v1.39.0
+	go.opentelemetry.io/otel/exporters/stdout/stdouttrace v1.16.0
 	go.opentelemetry.io/otel/sdk v1.43.0
 	go.opentelemetry.io/otel/trace v1.43.0
 	go.temporal.io/api v1.63.0
@@ -38,40 +38,41 @@ require (
 	go.temporal.io/sdk/contrib/tally v0.2.0
 	go.temporal.io/sdk/contrib/workflowstreams v0.1.1
 	go.uber.org/multierr v1.11.0
-	go.uber.org/zap v1.27.1
-	google.golang.org/grpc v1.79.3
+	go.uber.org/zap v1.27.0
+	google.golang.org/adk/v2 v2.0.1-0.20260707195420-2a04f92f1776
+	google.golang.org/genai v1.62.0
+	google.golang.org/grpc v1.81.0
 	google.golang.org/protobuf v1.36.11
 	gopkg.in/DataDog/dd-trace-go.v1 v1.59.0
 	gopkg.in/square/go-jose.v2 v2.6.0
 	gopkg.in/yaml.v3 v3.0.1
 )
 
 require (
+	cloud.google.com/go v0.123.0 // indirect
+	cloud.google.com/go/auth v0.20.0 // indirect
+	cloud.google.com/go/compute/metadata v0.9.0 // indirect
 	github.com/BurntSushi/toml v1.4.0 // indirect
 	github.com/DataDog/appsec-internal-go v1.4.0 // indirect
-	github.com/DataDog/datadog-agent/comp/core/tagger/origindetection v0.77.0 // indirect
-	github.com/DataDog/datadog-agent/pkg/obfuscate v0.77.0 // indirect
-	github.com/DataDog/datadog-agent/pkg/opentelemetry-mapping-go/otlp/attributes v0.77.0 // indirect
-	github.com/DataDog/datadog-agent/pkg/proto v0.77.0 // indirect
-	github.com/DataDog/datadog-agent/pkg/remoteconfig/state v0.77.0 // indirect
-	github.com/DataDog/datadog-agent/pkg/template v0.77.0 // indirect
-	github.com/DataDog/datadog-agent/pkg/trace v0.77.0 // indirect
-	github.com/DataDog/datadog-agent/pkg/trace/log v0.77.0 // indirect
-	github.com/DataDog/datadog-agent/pkg/trace/otel v0.77.0 // indirect
-	github.com/DataDog/datadog-agent/pkg/trace/stats v0.77.0 // indirect
-	github.com/DataDog/datadog-agent/pkg/trace/traceutil v0.77.0 // indirect
-	github.com/DataDog/datadog-agent/pkg/util/log v0.77.0 // indirect
-	github.com/DataDog/datadog-agent/pkg/util/scrubber v0.77.0 // indirect
-	github.com/DataDog/datadog-agent/pkg/version v0.77.0 // indirect
-	github.com/DataDog/datadog-go/v5 v5.8.3 // indirect
-	github.com/DataDog/dd-trace-go/v2 v2.8.1 // indirect
+	github.com/DataDog/datadog-agent/comp/core/tagger/origindetection v0.71.0 // indirect
+	github.com/DataDog/datadog-agent/pkg/obfuscate v0.71.0 // indirect
+	github.com/DataDog/datadog-agent/pkg/opentelemetry-mapping-go/otlp/attributes v0.71.0 // indirect
+	github.com/DataDog/datadog-agent/pkg/proto v0.71.0 // indirect
+	github.com/DataDog/datadog-agent/pkg/remoteconfig/state v0.73.0-rc.1 // indirect
+	github.com/DataDog/datadog-agent/pkg/trace v0.71.0 // indirect
+	github.com/DataDog/datadog-agent/pkg/util/log v0.71.0 // indirect
+	github.com/DataDog/datadog-agent/pkg/util/scrubber v0.71.0 // indirect
+	github.com/DataDog/datadog-agent/pkg/version v0.71.0 // indirect
+	github.com/DataDog/datadog-go/v5 v5.6.0 // indirect
+	github.com/DataDog/dd-trace-go/v2 v2.4.0 // indirect
 	github.com/DataDog/go-libddwaf/v2 v2.2.3 // indirect
-	github.com/DataDog/go-libddwaf/v4 v4.9.0 // indirect
-	github.com/DataDog/go-runtime-metrics-internal v0.0.4-0.20260217080614-b0f4edc38a6d // indirect
-	github.com/DataDog/go-sqllexer v0.1.13 // indirect
+	github.com/DataDog/go-libddwaf/v4 v4.6.1 // indirect
+	github.com/DataDog/go-runtime-metrics-internal v0.0.4-0.20250721125240-fdf1ef85b633 // indirect
+	github.com/DataDog/go-sqllexer v0.1.8 // indirect
 	github.com/DataDog/go-tuf v1.1.1-0.5.2 // indirect
-	github.com/DataDog/sketches-go v1.4.8 // indirect
+	github.com/DataDog/sketches-go v1.4.7 // indirect
 	github.com/HdrHistogram/hdrhistogram-go v1.1.2 // indirect
+	github.com/Masterminds/semver/v3 v3.3.1 // indirect
 	github.com/Microsoft/go-winio v0.6.2 // indirect
 	github.com/aws/aws-lambda-go v1.47.0 // indirect
 	github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.10 // indirect
@@ -94,75 +95,85 @@ require (
 	github.com/cihub/seelog v0.0.0-20170130134532-f561c5e57575 // indirect
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/dustin/go-humanize v1.0.1 // indirect
-	github.com/ebitengine/purego v0.10.0 // indirect
+	github.com/ebitengine/purego v0.8.4 // indirect
 	github.com/facebookgo/clock v0.0.0-20150410010913-600d898af40a // indirect
+	github.com/felixge/httpsnoop v1.0.4 // indirect
 	github.com/go-logr/logr v1.4.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-ole/go-ole v1.3.0 // indirect
+	github.com/go-viper/mapstructure/v2 v2.4.0 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang/protobuf v1.5.4 // indirect
+	github.com/google/go-cmp v0.7.0 // indirect
+	github.com/google/jsonschema-go v0.4.2 // indirect
+	github.com/google/s2a-go v0.1.9 // indirect
+	github.com/google/safehtml v0.1.0 // indirect
+	github.com/googleapis/enterprise-certificate-proxy v0.3.15 // indirect
+	github.com/googleapis/gax-go/v2 v2.22.0 // indirect
+	github.com/gorilla/websocket v1.5.3 // indirect
 	github.com/grpc-ecosystem/go-grpc-middleware/v2 v2.3.2 // indirect
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.28.0 // indirect
 	github.com/hashicorp/errwrap v1.1.0 // indirect
 	github.com/hashicorp/go-multierror v1.1.1 // indirect
-	github.com/hashicorp/go-version v1.8.0 // indirect
+	github.com/hashicorp/go-version v1.7.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
-	github.com/klauspost/compress v1.18.4 // indirect
-	github.com/klauspost/cpuid/v2 v2.3.0 // indirect
-	github.com/linkdata/deadlock v0.5.5 // indirect
-	github.com/lufia/plan9stats v0.0.0-20260216142805-b3301c5f2a88 // indirect
+	github.com/klauspost/compress v1.18.0 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.5 // indirect
+	github.com/lufia/plan9stats v0.0.0-20250317134145-8bc96cf8fc35 // indirect
 	github.com/minio/simdjson-go v0.4.5 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.3-0.20250322232337-35a7c28c31ee // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
 	github.com/nexus-rpc/nexus-proto-annotations v0.1.0 // indirect
 	github.com/outcaste-io/ristretto v0.2.3 // indirect
-	github.com/petermattis/goid v0.0.0-20260226131333-17d1149c6ac6 // indirect
 	github.com/philhofer/fwd v1.2.0 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/planetscale/vtprotobuf v0.6.1-0.20240319094008-0393e58bdf10 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
 	github.com/power-devops/perfstat v0.0.0-20240221224432-82ca36839d55 // indirect
 	github.com/prometheus/client_model v0.6.2 // indirect
-	github.com/prometheus/common v0.67.5 // indirect
-	github.com/prometheus/procfs v0.19.2 // indirect
+	github.com/prometheus/common v0.65.0 // indirect
+	github.com/prometheus/procfs v0.16.1 // indirect
 	github.com/puzpuzpuz/xsync/v3 v3.5.1 // indirect
 	github.com/robfig/cron v1.2.0 // indirect
 	github.com/ryszard/goskiplist v0.0.0-20150312221310-2dfbae5fcf46 // indirect
-	github.com/secure-systems-lab/go-securesystemslib v0.10.0 // indirect
-	github.com/shirou/gopsutil/v4 v4.26.2 // indirect
+	github.com/secure-systems-lab/go-securesystemslib v0.9.0 // indirect
+	github.com/shirou/gopsutil/v4 v4.25.8-0.20250809033336-ffcdc2b7662f // indirect
 	github.com/stretchr/objx v0.5.2 // indirect
+	github.com/theckman/httpforwarded v0.4.0 // indirect
 	github.com/tidwall/gjson v1.16.0 // indirect
 	github.com/tidwall/match v1.1.1 // indirect
 	github.com/tidwall/pretty v1.2.1 // indirect
 	github.com/tidwall/sjson v1.2.5 // indirect
-	github.com/tinylib/msgp v1.6.3 // indirect
-	github.com/tklauser/go-sysconf v0.3.16 // indirect
-	github.com/tklauser/numcpus v0.11.0 // indirect
-	github.com/trailofbits/go-mutexasserts v0.0.0-20250514102930-c1f3d2e37561 // indirect
+	github.com/tinylib/msgp v1.3.0 // indirect
+	github.com/tklauser/go-sysconf v0.3.15 // indirect
+	github.com/tklauser/numcpus v0.10.0 // indirect
 	github.com/twmb/murmur3 v1.1.8 // indirect
 	github.com/uber/jaeger-lib v2.4.1+incompatible // indirect
 	github.com/yusufpapurcu/wmi v1.2.4 // indirect
 	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
-	go.opentelemetry.io/collector/component v1.51.1-0.20260205185216-81bc641f26c0 // indirect
-	go.opentelemetry.io/collector/featuregate v1.51.1-0.20260205185216-81bc641f26c0 // indirect
-	go.opentelemetry.io/collector/pdata v1.51.1-0.20260205185216-81bc641f26c0 // indirect
-	go.opentelemetry.io/collector/pdata/pprofile v0.145.1-0.20260205185216-81bc641f26c0 // indirect
+	go.opentelemetry.io/collector/component v1.39.0 // indirect
+	go.opentelemetry.io/collector/featuregate v1.39.0 // indirect
+	go.opentelemetry.io/collector/internal/telemetry v0.133.0 // indirect
+	go.opentelemetry.io/collector/pdata v1.39.0 // indirect
+	go.opentelemetry.io/contrib/bridges/otelzap v0.12.0 // indirect
+	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.68.0 // indirect
 	go.opentelemetry.io/contrib/propagators/aws v1.42.0 // indirect
 	go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.42.0 // indirect
-	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.42.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.43.0 // indirect
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.42.0 // indirect
+	go.opentelemetry.io/otel/log v0.19.0 // indirect
 	go.opentelemetry.io/otel/metric v1.43.0 // indirect
 	go.opentelemetry.io/otel/sdk/metric v1.43.0 // indirect
-	go.opentelemetry.io/proto/otlp v1.9.0 // indirect
+	go.opentelemetry.io/proto/otlp v1.10.0 // indirect
 	go.shabbyrobe.org/gocovmerge v0.0.0-20230507111327-fa4f82cfbf4d // indirect
+	go.temporal.io/sdk/contrib/googleadk v0.1.0
 	go.uber.org/atomic v1.11.0 // indirect
-	go.yaml.in/yaml/v2 v2.4.3 // indirect
 	go.yaml.in/yaml/v3 v3.0.4 // indirect
 	go4.org/intern v0.0.0-20230525184215-6c62f75575cb // indirect
 	go4.org/unsafe/assume-no-moving-gc v0.0.0-20231121144256-b99613f794b6 // indirect
 	golang.org/x/crypto v0.52.0 // indirect
-	golang.org/x/exp v0.0.0-20260209203927-2842357ff358 // indirect
+	golang.org/x/exp v0.0.0-20250408133849-7e4ce0ab07d0 // indirect
 	golang.org/x/mod v0.35.0 // indirect
 	golang.org/x/net v0.55.0 // indirect
 	golang.org/x/sync v0.20.0 // indirect
@@ -171,8 +182,11 @@ require (
 	golang.org/x/time v0.15.0 // indirect
 	golang.org/x/tools v0.44.0 // indirect
 	golang.org/x/xerrors v0.0.0-20240903120638-7835f813f4da // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20260209200024-4cfbd4190f57 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20260209200024-4cfbd4190f57 // indirect
-	gopkg.in/ini.v1 v1.67.1 // indirect
+	google.golang.org/api v0.279.0 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20260427160629-7cedc36a6bc4 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20260511170946-3700d4141b60 // indirect
+	gopkg.in/ini.v1 v1.67.0 // indirect
 	inet.af/netaddr v0.0.0-20230525184311-b8eac61e914a // indirect
+	rsc.io/omap v1.2.0 // indirect
+	rsc.io/ordered v1.1.1 // indirect
 )