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Added response timings to trace logs and response headers

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Amos Ng 2020-06-14 19:06:10 +08:00
parent 41d06a2646
commit f4fa882381
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4 changed files with 30 additions and 6 deletions

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@ -6,6 +6,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
## [Unreleased] ## [Unreleased]
### Added ### Added
- [2020-06-14] Added response timings to trace logs and response headers by [@lflare].
### Changed ### Changed

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@ -18,7 +18,8 @@ import java.util.concurrent.atomic.AtomicReference
fun getServer(cache: DiskLruCache, serverSettings: ServerSettings, clientSettings: ClientSettings, statistics: AtomicReference<Statistics>): Http4kServer { fun getServer(cache: DiskLruCache, serverSettings: ServerSettings, clientSettings: ClientSettings, statistics: AtomicReference<Statistics>): Http4kServer {
val imageServer = ImageServer(cache, statistics, serverSettings.imageServer) val imageServer = ImageServer(cache, statistics, serverSettings.imageServer)
return catchAllHideDetails() return Timer
.then(catchAllHideDetails())
.then(ServerFilters.CatchLensFailure) .then(ServerFilters.CatchLensFailure)
.then(addCommonHeaders()) .then(addCommonHeaders())
.then( .then(

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@ -68,8 +68,10 @@ class ImageServer(private val cache: DiskLruCache, private val statistics: Atomi
val snapshot = cache.get(cacheId) val snapshot = cache.get(cacheId)
if (snapshot != null) { if (snapshot != null) {
request.handleCacheHit(sanitizedUri, getRc4(rc4Bytes), snapshot) request.handleCacheHit(sanitizedUri, getRc4(rc4Bytes), snapshot)
.header("X-Uri", sanitizedUri)
} else { } else {
request.handleCacheMiss(sanitizedUri, getRc4(rc4Bytes), cacheId) request.handleCacheMiss(sanitizedUri, getRc4(rc4Bytes), cacheId)
.header("X-Uri", sanitizedUri)
} }
} }

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@ -1,6 +1,10 @@
/* ktlint-disable no-wildcard-imports */ /* ktlint-disable no-wildcard-imports */
package mdnet.base.server package mdnet.base.server
import java.time.ZoneOffset
import java.time.ZonedDateTime
import java.time.format.DateTimeFormatter
import java.util.*
import mdnet.base.Constants import mdnet.base.Constants
import org.http4k.core.Filter import org.http4k.core.Filter
import org.http4k.core.HttpHandler import org.http4k.core.HttpHandler
@ -8,13 +12,8 @@ import org.http4k.core.Request
import org.http4k.core.Response import org.http4k.core.Response
import org.http4k.core.Status import org.http4k.core.Status
import org.slf4j.LoggerFactory import org.slf4j.LoggerFactory
import java.time.ZoneOffset
import java.time.ZonedDateTime
import java.time.format.DateTimeFormatter
import java.util.*
private val HTTP_TIME_FORMATTER = DateTimeFormatter.ofPattern("EEE, dd MMM yyyy HH:mm:ss O", Locale.ENGLISH) private val HTTP_TIME_FORMATTER = DateTimeFormatter.ofPattern("EEE, dd MMM yyyy HH:mm:ss O", Locale.ENGLISH)
private val LOGGER = LoggerFactory.getLogger("Application") private val LOGGER = LoggerFactory.getLogger("Application")
fun addCommonHeaders(): Filter { fun addCommonHeaders(): Filter {
@ -41,3 +40,24 @@ fun catchAllHideDetails(): Filter {
} }
} }
} }
val Timer = Filter {
next: HttpHandler -> {
request: Request ->
val start = System.currentTimeMillis()
val response = next(request)
val latency = System.currentTimeMillis() - start
if (LOGGER.isTraceEnabled && response.header("X-Uri") != null) {
// Dirty hack to get sanitizedUri from ImageServer
val sanitizedUri = response.header("X-Uri")
// Log in TRACE
LOGGER.trace("Request for $sanitizedUri completed in ${latency}ms")
// Delete response header entirely
response.header("X-Uri", null)
}
// Set response header with processing times
response.header("X-Time-Taken", latency.toString())
}
}