Count hits by source file

Author: yawkat

server/src/main/kotlin/at/yawk/javabrowser/server/BaseHandler.kt

@@ -12,6 +12,9 @@ import io.undertow.server.HttpServerExchange
 import io.undertow.util.StatusCodes
 import org.skife.jdbi.v2.DBI
 import org.skife.jdbi.v2.Handle
+import java.time.ZoneOffset
+import java.time.ZonedDateTime
+import java.time.temporal.ChronoUnit
 
 /**
  * @author yawkat
@@ -92,6 +95,13 @@ class BaseHandler(private val dbi: DBI,
             throw HttpException(StatusCodes.NOT_FOUND, "No such source file")
         }
 
+        // increment hit counter for this time bin
+        val timestamp = ZonedDateTime.now(ZoneOffset.UTC).truncatedTo(ChronoUnit.HOURS)
+        conn.update("insert into hits (timestamp, sourceFile, artifactId, hits) values (?, ?, ?, 1) on conflict (timestamp, sourceFile, artifactId) do update set hits = hits.hits + 1",
+                timestamp.toLocalDateTime(),
+                sourceFilePath,
+                artifactPath.id)
+
         val alternatives = ArrayList<SourceFileView.Alternative>()
         fun tryExactMatch(path: String) {
             conn.createQuery("select artifactId, path from sourceFiles where path = ?")

shared/src/main/resources/db/migration/V5__Hit_Counting.sql

@@ -0,0 +1,10 @@
+create table hits
+(
+  -- UTC timestamp of this hit counter. Resolution is application-defined, and may be multiple hours.
+  timestamp  timestamp not null,
+  sourceFile varchar   not null,
+  artifactId varchar   not null,
+  hits       int8      not null,
+
+  primary key (timestamp, sourceFile, artifactId)
+);