feat: add OpenAI Runner protocol implementation (AIC-2388)#1337
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Adds OpenAIModelRunner, OpenAIAgentRunner, and OpenAIRunnerFactory that implement the Runner protocol introduced in JS PR 6. The runners take an LDAICompletionConfig / LDAIAgentConfig at construction and expose run(prompt: string) returning RunnerResult. OpenAIModelRunner.run(prompt) prepends the config's messages before the user prompt. OpenAIAgentRunner runs a tool-calling loop using the OpenAI Chat Completions API, populating LDAIMetrics.toolCalls with the names of tools the model invoked. Tool implementations are supplied via a ToolRegistry passed to OpenAIRunnerFactory.createAgent. The deprecated OpenAIProvider class is preserved so AIProviderFactory continues to work during the migration. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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Summary
Adds Runner-protocol classes for the OpenAI provider, replacing the deprecated
AIProviderextension model introduced in earlier work. New classes:OpenAIModelRunner—Runnerfor chat completions;run(messages, outputType?)returnsRunnerResult { content, metrics, raw, parsed? }. Structured output is parsed automatically via OpenAI'sjson_schemaresponse format.OpenAIAgentRunner—Runnerfor a single agent. Runs a tool-calling loop using the OpenAI Chat Completions API. Tool definitions come fromconfig.model.parameters.tools; tool callables come from a caller-suppliedToolRegistry. PopulatesLDAIMetrics.toolCallswith the names of tools the model invoked.OpenAIRunnerFactory— exposescreateModel(config)andcreateAgent(config, tools?). Shares oneOpenAIclient across all runners produced by the factory.convertMessagesToOpenAI,getAIMetricsFromResponse,getAIUsageFromResponse— helper functions usable from a tracker'strackMetricsOf.The legacy
OpenAIProviderclass is preserved soAIProviderFactory(also@deprecated) keeps working until the managed layer fully migrates toRunner.run().Stacked on
jb/aic-2388/js-runner-protocol(JS PR 6).Test plan
yarn workspace @launchdarkly/server-sdk-ai-openai test— 33 tests pass (existing 13 + 20 new for the Runner classes / helpers)yarn workspace @launchdarkly/server-sdk-ai-openai lint— cleanyarn workspace @launchdarkly/server-sdk-ai-openai run build— clean🤖 Generated with Claude Code