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Hermes-ui/server/src/routes/logs.ts
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import Router from '@koa/router'
import * as hermesCli from '../services/hermes-cli'
export const logRoutes = new Router()
// List available log files
logRoutes.get('/api/logs', async (ctx) => {
const files = await hermesCli.listLogFiles()
ctx.body = { files }
})
interface LogEntry {
timestamp: string
level: string
logger: string
message: string
raw: string
}
// Parse a single log line into structured entry
function parseLine(line: string): LogEntry | null {
// Match: 2026-04-11 20:16:16,289 INFO aiohttp.access: message
const match = line.match(/^(\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2},\d{3})\s+(DEBUG|INFO|WARNING|ERROR|CRITICAL)\s+(\S+?):\s(.*)$/)
if (match) {
return {
timestamp: match[1],
level: match[2],
logger: match[3],
message: match[4],
raw: line,
}
}
// Unparseable line (e.g. traceback continuation)
return null
}
// Read log lines (parsed)
logRoutes.get('/api/logs/:name', async (ctx) => {
const logName = ctx.params.name
const lines = ctx.query.lines ? parseInt(ctx.query.lines as string, 10) : 100
const level = (ctx.query.level as string) || undefined
const session = (ctx.query.session as string) || undefined
const since = (ctx.query.since as string) || undefined
try {
const content = await hermesCli.readLogs(logName, lines, level, session, since)
const rawLines = content.split('\n')
const entries: (LogEntry | null)[] = []
for (const line of rawLines) {
// Skip header lines like "--- ~/.hermes/logs/agent.log (last 100) ---"
if (line.startsWith('---') || line.trim() === '') continue
entries.push(parseLine(line))
}
ctx.body = { entries }
} catch (err: any) {
ctx.status = 500
ctx.body = { error: err.message }
}
})