/**
* LLM Bridge Health Check Implementation
* Monitors LLM service availability and basic operations
*/
import { HealthCheck, HealthCheckResult, HealthStatus, HealthUtils, HealthCheckSeverity } from './types.js';
import { LLMBridgeService } from '../services/llm-bridge.js';
export class LLMBridgeHealthCheck implements HealthCheck {
name = 'llm-bridge';
description = 'LLM Bridge service health check - AI model connectivity and responses';
tags = ['llm', 'ai', 'external-service', 'optional'];
timeout = 15000; // 15 seconds (LLM calls can be slow)
constructor(private llmBridge: LLMBridgeService | null) {}
async check(): Promise<HealthCheckResult> {
const startTime = Date.now();
try {
// Check if LLM is configured
if (!this.llmBridge) {
return HealthUtils.createResult(
this.name,
HealthStatus.UNKNOWN,
'LLM Bridge service is not configured (optional feature disabled)',
Date.now() - startTime,
{ configured: false },
undefined,
HealthCheckSeverity.LOW,
this.tags
);
}
// Test LLM service health using existing health check method
const healthStatus = await this.llmBridge.getHealthStatus();
const duration = Date.now() - startTime;
if (healthStatus.healthy) {
return HealthUtils.createResult(
this.name,
HealthStatus.HEALTHY,
`LLM service is healthy (${healthStatus.provider}/${healthStatus.model})`,
duration,
{
provider: healthStatus.provider,
model: healthStatus.model,
lastTest: healthStatus.lastTest?.toISOString(),
responseTime: duration
},
undefined,
HealthCheckSeverity.LOW,
this.tags
);
} else {
return HealthUtils.createResult(
this.name,
HealthStatus.UNHEALTHY,
`LLM service is unhealthy: ${healthStatus.error ?? 'Unknown error'}`,
duration,
{
provider: healthStatus.provider,
model: healthStatus.model,
error: healthStatus.error,
lastTest: healthStatus.lastTest?.toISOString()
},
new Error(healthStatus.error ?? 'LLM service unhealthy'),
HealthCheckSeverity.MEDIUM,
this.tags
);
}
} catch (error) {
const duration = Date.now() - startTime;
return HealthUtils.createResult(
this.name,
HealthStatus.UNHEALTHY,
`LLM Bridge health check failed: ${error instanceof Error ? error.message : 'Unknown error'}`,
duration,
{
error: error instanceof Error ? error.message : String(error),
configured: !!this.llmBridge
},
error instanceof Error ? error : new Error(String(error)),
HealthCheckSeverity.MEDIUM,
this.tags
);
}
}
isEnabled(): boolean {
// LLM Bridge is optional - only enabled if configured
return !!this.llmBridge;
}
}
