feat(FR-1448): allow user to select multi agents when creating multi-node session

[nowgnuesLee]

resolves #4256 (FR-1448)

This PR adds support for selecting multiple agents when launching a session, available for Backend.AI manager version 25.15.0 and above.

Key changes:

• Modified AgentSelect component to handle multiple agent selection
• Updated agent selection logic in ResourceAllocationFormItems to support multi-agent mode
• Added special handling for the "auto" option in multi-select mode
• Implemented proper agent_list generation in session creation payload
• Added 'multi-agents' feature detection for manager version 25.16.0+
• Changed agent default value from string to array format ['auto']
• Removed restrictions that previously disabled cluster settings when a specific agent was selected

for testing, using test server which supports multi node session(like dogbowl)
Prior to version 25.16.0, it must behave identically to the existing version.

how to test:

• single mode
  • Please verify that the agent_list is sent as a string[] when using multi-agents.
• multi mode
  • Please verify that the agent_list is being passed as a string array when using multi-agents.

Checklist:

• Documentation
• Minium required manager version: 25.16.0
• Specific setting for review
• Minimum requirements to check during review
• Test case(s) to demonstrate the difference of before/after

[nowgnuesLee]

• feat(FR-1448): allow user to select multi agents when creating multi-node session #4309 👈 (View in Graphite)
• main

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[Copilot]

Pull Request Overview

This PR enables multi-agent selection when creating multi-node sessions for Backend.AI manager version 25.15.0 and above. It transforms the agent selection from a single dropdown to a multi-select component while maintaining backward compatibility.

• Added 'multi-agents' feature detection for manager version 25.15.0+
• Modified AgentSelect component to support multiple agent selection with special "auto" handling
• Updated session creation payload logic to properly handle agent arrays and cluster size requirements

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
src/lib/backend.ai-client-esm.ts	Added feature flag detection for multi-agents support
react/src/pages/SessionLauncherPage.tsx	Updated session creation payload logic and default agent value format
react/src/components/ResourceAllocationFormItems.tsx	Modified form to support multi-agent selection and removed cluster restrictions
react/src/components/AgentSelect.tsx	Enhanced component to handle multiple selection with auto option logic

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[github-actions]

Coverage report for ./react

St.❔	Category	Percentage	Covered / Total
🔴	Statements	4.64% (-0.15% 🔻)	530/11414
🔴	Branches	3.73% (-0.16% 🔻)	302/8088
🔴	Functions	2.88% (-0.06% 🔻)	102/3539
🔴	Lines	4.59% (-0.15% 🔻)	512/11158

Show files with reduced coverage 🔻

St.❔	File	Statements	Branches	Functions	Lines
🟢	... / graphql-transformer.ts	82.26% (-4.92% 🔻)	79.41% (-5.2% 🔻)	71.43% (-3.57% 🔻)	83.61% (-4.71% 🔻)
🔴	... / AgentSelect.tsx	3.7% (-1.3% 🔻)	0%	0%	3.7% (-1.3% 🔻)
🔴	... / ResourceAllocationFormItems.tsx	13.81% (-0.06% 🔻)	9.46% (-0.34% 🔻)	12% (-0.16% 🔻)	13.56% (-0.06% 🔻)

Test suite run success

121 tests passing in 14 suites.

Report generated by 🧪jest coverage report action from 5313409

[ironAiken2]

please resolve the conflicts :)

[yomybaby]

Code improvements

1. ResourceAllocationFormItems.tsx

• Improved code readability by removing spread operator and passing props directly
• mode and labelRender props are now more explicitly defined

2. SessionLauncherPage.tsx

• Simplified array handling by replacing Array.isArray() check with _.castArray()
• Better utilization of lodash utility function for cleaner code

[agatha197]

please resolve the conflicts. and is there any test node? you can reply it in jira comment or teams.

[agatha197]

How about dealing with only array of agents for reducing redundant checking? I think most of default values are already array.

[Copilot]

Pull Request Overview

Copilot reviewed 5 out of 5 changed files in this pull request and generated 5 comments.

[agatha197]

It needs to handle resource allocation also when user set multiple agent.