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feat: add runtime environment variable configuration support #6
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,115 @@ | ||
| import { AdapterConfig, ModelConfig } from '../types/config'; | ||
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||
| type ConfigSource = 'env' | 'file' | 'prompt' | 'fallback'; | ||
|
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| export interface RuntimeConfigSources { | ||
| baseUrl: ConfigSource; | ||
| apiKey: string; | ||
| models: { | ||
| opus: ConfigSource; | ||
| sonnet: ConfigSource; | ||
| haiku: ConfigSource; | ||
| }; | ||
| } | ||
|
|
||
| export interface RuntimeConfigResult { | ||
| config: Partial<AdapterConfig>; | ||
| sources: RuntimeConfigSources; | ||
| warnings: string[]; | ||
| } | ||
|
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| function readNonEmptyEnv(env: NodeJS.ProcessEnv, key: string): string | undefined { | ||
| const value = env[key]?.trim(); | ||
| return value ? value : undefined; | ||
| } | ||
|
|
||
| function resolveModelTier( | ||
| envValue: string | undefined, | ||
| defaultModel: string | undefined, | ||
| fileValue: string | undefined, | ||
| fallbackValue?: string | ||
| ): { value: string | undefined; source: ConfigSource } { | ||
| if (envValue) { | ||
| return { value: envValue, source: 'env' }; | ||
| } | ||
| if (defaultModel) { | ||
| return { value: defaultModel, source: 'fallback' }; | ||
| } | ||
| if (fileValue) { | ||
| return { value: fileValue, source: 'file' }; | ||
| } | ||
| if (fallbackValue) { | ||
| return { value: fallbackValue, source: 'fallback' }; | ||
| } | ||
| return { value: undefined, source: 'prompt' }; | ||
| } | ||
|
|
||
| export function resolveRuntimeConfig( | ||
| fileConfig: AdapterConfig | null, | ||
| env: NodeJS.ProcessEnv = process.env | ||
| ): RuntimeConfigResult { | ||
| const warnings: string[] = []; | ||
|
|
||
| const envBaseUrl = readNonEmptyEnv(env, 'ANTHROPIC_BASE_URL'); | ||
| const envApiKey = readNonEmptyEnv(env, 'ANTHROPIC_API_KEY'); | ||
| const envAuthToken = readNonEmptyEnv(env, 'ANTHROPIC_AUTH_TOKEN'); | ||
| const envDefaultModel = readNonEmptyEnv(env, 'ANTHROPIC_DEFAULT_MODEL'); | ||
|
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||
| if (envApiKey && envAuthToken) { | ||
| warnings.push('ANTHROPIC_AUTH_TOKEN ignored because ANTHROPIC_API_KEY is set'); | ||
| } | ||
|
|
||
| const opus = resolveModelTier( | ||
| readNonEmptyEnv(env, 'ANTHROPIC_DEFAULT_OPUS_MODEL'), | ||
| envDefaultModel, | ||
| fileConfig?.models?.opus | ||
| ); | ||
| const sonnet = resolveModelTier( | ||
| readNonEmptyEnv(env, 'ANTHROPIC_DEFAULT_SONNET_MODEL'), | ||
| envDefaultModel, | ||
| fileConfig?.models?.sonnet, | ||
| opus.value | ||
| ); | ||
| const haiku = resolveModelTier( | ||
| readNonEmptyEnv(env, 'ANTHROPIC_DEFAULT_HAIKU_MODEL'), | ||
| envDefaultModel, | ||
| fileConfig?.models?.haiku, | ||
| sonnet.value | ||
| ); | ||
|
|
||
| const resolvedModels: ModelConfig | undefined = opus.value | ||
| ? { | ||
| opus: opus.value, | ||
| sonnet: sonnet.value || opus.value, | ||
| haiku: haiku.value || sonnet.value || opus.value, | ||
| } | ||
| : undefined; | ||
|
|
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| const resolvedApiKey = envApiKey ?? envAuthToken ?? fileConfig?.apiKey; | ||
|
|
||
| return { | ||
| config: { | ||
| baseUrl: envBaseUrl ?? fileConfig?.baseUrl, | ||
| apiKey: resolvedApiKey, | ||
| models: resolvedModels, | ||
| toolFormat: fileConfig?.toolFormat, | ||
| port: fileConfig?.port, | ||
| }, | ||
| sources: { | ||
| baseUrl: envBaseUrl ? 'env' : fileConfig?.baseUrl ? 'file' : 'prompt', | ||
| apiKey: envApiKey | ||
| ? 'env(ANTHROPIC_API_KEY)' | ||
| : envAuthToken | ||
| ? 'env(ANTHROPIC_AUTH_TOKEN)' | ||
| : fileConfig?.apiKey | ||
| ? 'file' | ||
| : 'prompt', | ||
| models: { | ||
| opus: opus.source, | ||
| sonnet: sonnet.source, | ||
| haiku: haiku.source, | ||
| }, | ||
| }, | ||
| warnings, | ||
| }; | ||
| } |
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When runtime env vars provide a complete config but
~/.claude-adapter/config.jsonis absent, this branch still prompts fortoolFormatbecauseconfig.toolFormatisundefined. That makes the new env-driven startup path interactive-only, so headless runs (CI/scripts/non-TTY) will block or fail despite havingANTHROPIC_BASE_URL,ANTHROPIC_API_KEY, and model env vars set. Since server code already defaults missingtoolFormatto'native', this prompt should be skipped (or defaulted) when no file-backed config exists.Useful? React with 👍 / 👎.