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Add support for Agent Engine Sessions #249

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Add support for Agent Engine Sessions #249

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e0b221e
Implement VertexAiSessionService and add tests
Apr 8, 2026
110ea0e
Merge upstream/main and resolve conflicts
Apr 8, 2026
120581f
fix(deps): use npm version of @google-cloud/vertexai to fix CI
Apr 9, 2026
d8f9eda
Merge branch 'main' into feat/vertex-ai-session-service
AmaadMartin Apr 9, 2026
be63db6
fix(deps): force public registry and clean lockfile
Apr 9, 2026
6ef596e
add coverage tests for VertexAISessionService
Apr 9, 2026
adffd71
export VertexAiSessionServiceOptions for docs
Apr 9, 2026
52c59b4
fix lint errors in service and tests
Apr 9, 2026
9b85428
fix lint and TS errors in service and tests
Apr 9, 2026
308525c
fix formatting and resolve lint/TS errors
Apr 9, 2026
9afe6b2
Move Vertex AI Session Service tests to new files
Apr 10, 2026
4a2a6ed
Resolve package-lock.json merge conflict
Apr 10, 2026
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21 changes: 11 additions & 10 deletions core/package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -41,19 +41,14 @@
},
"dependencies": {
"@a2a-js/sdk": "^0.3.10",
"@google-cloud/opentelemetry-cloud-monitoring-exporter": "^0.21.0",
"@google-cloud/opentelemetry-cloud-trace-exporter": "^3.0.0",
"@google-cloud/storage": "^7.17.1",
"@google-cloud/vertexai": "^1.11.0",
"@google/genai": "^1.37.0",
"@mikro-orm/core": "^6.6.10",
"@mikro-orm/reflection": "^6.6.6",
"@modelcontextprotocol/sdk": "^1.26.0",
"express": "^4.22.1",
"google-auth-library": "^10.3.0",
"lodash-es": "^4.18.1",
"winston": "^3.19.0",
"zod": "^4.2.1",
"zod-to-json-schema": "^3.25.1",
"@google-cloud/opentelemetry-cloud-monitoring-exporter": "^0.21.0",
"@google-cloud/opentelemetry-cloud-trace-exporter": "^3.0.0",
"@google-cloud/storage": "^7.17.1",
"@opentelemetry/api": "1.9.0",
"@opentelemetry/api-logs": "^0.205.0",
"@opentelemetry/exporter-logs-otlp-http": "^0.205.0",
Expand All @@ -64,7 +59,13 @@
"@opentelemetry/sdk-logs": "^0.205.0",
"@opentelemetry/sdk-metrics": "^2.1.0",
"@opentelemetry/sdk-trace-base": "^2.1.0",
"@opentelemetry/sdk-trace-node": "^2.1.0"
"@opentelemetry/sdk-trace-node": "^2.1.0",
"express": "^4.22.1",
"google-auth-library": "^10.3.0",
"lodash-es": "^4.18.1",
"winston": "^3.19.0",
"zod": "^4.2.1",
"zod-to-json-schema": "^3.25.1"
},
"devDependencies": {
"@mikro-orm/sqlite": "^6.6.6",
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2 changes: 2 additions & 0 deletions core/src/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,8 @@ export {getArtifactServiceFromUri} from './artifacts/registry.js';
export * from './common.js';
export {DatabaseSessionService} from './sessions/database_session_service.js';
export {getSessionServiceFromUri} from './sessions/registry.js';
export {VertexAiSessionService} from './sessions/vertex_ai_session_service.js';
export type {VertexAiSessionServiceOptions} from './sessions/vertex_ai_session_service.js';
export * from './telemetry/google_cloud.js';
export * from './telemetry/setup.js';
export * from './tools/mcp/mcp_session_manager.js';
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9 changes: 9 additions & 0 deletions core/src/sessions/registry.ts
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Expand Up @@ -13,6 +13,10 @@ import {
InMemorySessionService,
isInMemoryConnectionString,
} from './in_memory_session_service.js';
import {
VertexAiSessionService,
isVertexAiSessionServiceConnectionString,
} from './vertex_ai_session_service.js';

export function getSessionServiceFromUri(uri: string): BaseSessionService {
if (isInMemoryConnectionString(uri)) {
Expand All @@ -23,5 +27,10 @@ export function getSessionServiceFromUri(uri: string): BaseSessionService {
return new DatabaseSessionService(uri);
}

if (isVertexAiSessionServiceConnectionString(uri)) {
// uri is something like vertexai://projects/abc/locations/us-central1
return new VertexAiSessionService();
}

throw new Error(`Unsupported session service URI: ${uri}`);
}
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