fix: Update Vertex AI endpoint to use HTTP restriction config

[pskiran1]

What does the PR do?

This PR fixes the Vertex AI endpoint so that it properly respects the HTTP restriction configuration (--http-restricted-api and --http-max-input-size). Previously, Vertex AI was constructing its HTTPAPIServer base class with hardcoded defaults for these values; now the values are passed through from the user-configured HTTP settings.

Changes:

• Updated VertexAiAPIServer::Create() and VertexAiAPIServer constructor to accept max_input_size and restricted_apis parameters.
• Updated StartVertexAiService() in main.cc to read http_max_input_size_ and http_restricted_apis_ from global params (when HTTP is enabled) and pass them to VertexAiAPIServer::Create().
• Added a new test section in qa/L0_vertex_ai/test.sh that verifies restriction enforcement on the Vertex AI redirect mechanism.

Checklist

• PR title reflects the change and is of format <commit_type>: <Title>
• Changes are described in the pull request.
• Related issues are referenced.
• Populated github labels field
• Added test plan and verified test passes.
• Verified that the PR passes existing CI.
• Verified copyright is correct on all changed files.
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• build
• ci
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• fix
• perf
• refactor
• revert
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Test plan:

• CI Pipeline ID: 45087013, 45512026

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Background

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• closes GitHub issue: #xxx

[Copilot]

Pull request overview

This PR fixes the Vertex AI endpoint so that it properly respects the HTTP restriction configuration (--http-restricted-api and --http-max-input-size). Previously, Vertex AI was constructing its HTTPAPIServer base class with hardcoded defaults for these values; now the values are passed through from the user-configured HTTP settings.

Changes:

• Updated VertexAiAPIServer::Create() and VertexAiAPIServer constructor to accept max_input_size and restricted_apis parameters.
• Updated StartVertexAiService() in main.cc to read http_max_input_size_ and http_restricted_apis_ from global params (when HTTP is enabled) and pass them to VertexAiAPIServer::Create().
• Added a new test section in qa/L0_vertex_ai/test.sh that verifies restriction enforcement on the Vertex AI redirect mechanism.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
src/vertex_ai_server.h	Added max_input_size and restricted_apis parameters to Create() and the private constructor. Updated copyright to 2026.
src/vertex_ai_server.cc	Updated constructor and Create() implementation to accept and forward the new parameters to the base class. Updated copyright to 2026.
src/main.cc	Added code to read HTTP config for max_input_size and restricted_apis (guarded by TRITON_ENABLE_HTTP) before calling VertexAiAPIServer::Create(). Updated copyright to 2026.
qa/L0_vertex_ai/test.sh	Added setup for a restricted_single_model Python model repository and a comprehensive test section verifying that restricted APIs are correctly blocked/allowed on the Vertex AI redirect mechanism. Updated copyright to 2026.

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[mattwittwer]

LGTM

[yinggeh]

LGTM. Left comment