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zen: log ip prefix

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Frank 2026-05-29 19:06:15 -04:00
parent bcc345ff82
commit 51a9b0baad
1 changed files with 27 additions and 7 deletions
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34
packages/console/function/src/log-processor.ts
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@ -21,6 +21,7 @@ export default {
)
continue
const ip = event.event.request.headers["x-real-ip"]
let data: Record<string, unknown> = {
"cf.continent": event.event.request.cf?.continent,
"cf.country": event.event.request.cf?.country,
@ -32,7 +33,8 @@ export default {
duration: event.wallTime,
request_length: parseInt(event.event.request.headers["content-length"] ?? "0"),
status: event.event.response?.status ?? 0,
ip: event.event.request.headers["x-real-ip"],
ip,
"ip.prefix": ipPrefix(ip),
}
const time = new Date(event.eventTimestamp ?? Date.now()).toISOString()
const events = [
@ -110,6 +112,7 @@ function toLakeEvent(time: string, data: Record<string, unknown>) {
request_length: integer(data, "request_length"),
status: integer(data, "status"),
ip: string(data, "ip"),
ip_prefix: string(data, "ip.prefix"),
is_stream: boolean(data, "is_stream"),
session: string(data, "session"),
request: string(data, "request"),
@ -146,15 +149,32 @@ function toLakeEvent(time: string, data: Record<string, unknown>) {
cost_cache_read_microcents: integer(data, "cost.cache_read.microcents"),
cost_cache_write_microcents: integer(data, "cost.cache_write.microcents"),
cost_total_microcents: integer(data, "cost.total.microcents"),
cost_input: integer(data, "cost.input"),
cost_output: integer(data, "cost.output"),
cost_cache_read: integer(data, "cost.cache_read"),
cost_cache_write_5m: integer(data, "cost.cache_write_5m"),
cost_cache_write_1h: integer(data, "cost.cache_write_1h"),
cost_total: integer(data, "cost.total"),
}
}
// Returns a stable lookup key for an IP address.
// IPv4: full address as /32 (e.g. "203.0.113.45/32").
// IPv6: the /64 network prefix (e.g. "2001:db8:abcd:1234::/64"). ISPs commonly
// rotate the lower 64 host bits via SLAAC privacy extensions (RFC 8981), so
// grouping by /64 collapses those rotations into one key.
function ipPrefix(ip: string | undefined) {
if (!ip) return undefined
if (ip.includes(".") && !ip.includes(":")) return `${ip}/32`
if (!ip.includes(":")) return undefined
// Expand "::" to its full form, then keep the first 4 hextets.
const [head, tail] = ip.split("::") as [string, string | undefined]
const headParts = head ? head.split(":") : []
const tailParts = tail !== undefined ? tail.split(":") : []
const missing = 8 - headParts.length - tailParts.length
if (missing < 0) return undefined
const full = [...headParts, ...new Array(missing).fill("0"), ...tailParts]
if (full.length !== 8) return undefined
const prefix = full.slice(0, 4).map((part) => part.toLowerCase().replace(/^0+(?=.)/, "")).join(":")
return `${prefix}::/64`
}
function string(data: Record<string, unknown>, key: string) {
const value = data[key]
if (typeof value === "string") return value