rework logging in gitrunner

src/main/kotlin/alfred/web/core/build/BuildContext.kt

@@ -5,4 +5,6 @@ data class BuildContext(
     val logFile: LogFile,
     val rev: String,
     val buildId: BuildId
-)
+) {
+    fun log(s: String) = logFile.append(s)
+}

src/main/kotlin/alfred/web/core/build/LogFile.kt

@@ -1,5 +1,7 @@
 package alfred.web.core.build
 
+import org.slf4j.Logger
+import org.slf4j.LoggerFactory
 import java.io.File
 import java.nio.file.Path
 import java.time.ZonedDateTime
@@ -13,6 +15,8 @@ class LogFile(
     val backingFile: File
 ) {
 
+    val logger: Logger = LoggerFactory.getLogger(this::class.java)
+
     fun header(buildId: BuildId, rev: String?, workspace: Path) {
         append("At your service.")
         append("Build $buildId, rev [${rev ?: "-none-"}] started at ${ZonedDateTime.now()}")
@@ -23,7 +27,9 @@ class LogFile(
         append("Build finished at ${ZonedDateTime.now()}")
     }
 
-    fun append(content: String) =
+    fun append(content: String) {
+        logger.debug("logging to file: $content")
+
         backingFile.appendText(
             content.lines().joinToString(separator = "\n") {
                 if (it.trim().isEmpty()) {
@@ -33,5 +39,6 @@ class LogFile(
                 }
             } + "\n"
         )
+    }
 
 }

src/main/kotlin/alfred/web/core/runner/GitRunner.kt

@@ -30,7 +30,7 @@ class GitRunner(
         val config = builds.buildConfig(buildId)
         val logFile = builds.createLogFile(buildId)
 
-        logger.info("preparing process for build $buildId with config $config")
+        logger.info("preparing process for build $buildId")
         logger.info("log file: $logFile")
 
         val ctx = BuildContext(
@@ -55,38 +55,43 @@ class GitRunner(
     }
 
     private fun clone(ctx: BuildContext, wsPath: Path) {
-        logger.info("build ${ctx.buildId}: cloning ${ctx.config.gitRepo} into $wsPath")
+        ctx.log("build ${ctx.buildId}: cloning ${ctx.config.gitRepo} into $wsPath")
 
-        val process = processes.builder(ctx.config, ctx.logFile, "")
+        val cloneProc = processes.builder(ctx.config, ctx.logFile, "")
             .command("git", "clone", ctx.config.gitRepo, ".")
             .directory(wsPath.toFile())
             .start()
-        handles.add(Handle(process.toHandle(), ctx.buildId))
-        val cloneSuccess = process.waitFor(ctx.config.gitCloneTimeout, TimeUnit.SECONDS)
+        handles.add(Handle(cloneProc.toHandle(), ctx.buildId))
 
-        logger.info("build ${ctx.buildId}: checkout rev ${ctx.rev}")
-        processes.builder(ctx.config, ctx.logFile, "")
+        val cloneSuccess = cloneProc.waitFor(ctx.config.gitCloneTimeout, TimeUnit.SECONDS)
+        if (!cloneSuccess) {
+            throw FailedToClone(ctx.buildId, ctx.config.gitRepo ?: "[no repo configured]")
+        }
+
+        ctx.log("build ${ctx.buildId}: checkout rev ${ctx.rev}")
+        val checkoutProc = processes.builder(ctx.config, ctx.logFile, "")
             .command("git", "checkout", ctx.rev)
             .directory(wsPath.toFile())
             .start()
-            .waitFor()
+        handles.add(Handle(checkoutProc.toHandle(), ctx.buildId))
 
-        if (!cloneSuccess) {
-            throw FailedToClone(ctx.buildId, ctx.config.gitRepo ?: "[no repo configured]")
+        val checkoutSuccess = checkoutProc.waitFor(ctx.config.gitCloneTimeout, TimeUnit.SECONDS)
+        if (!checkoutSuccess) {
+            throw FailedToCheckout(ctx.buildId, ctx.config.gitRepo!!, ctx.rev)
         }
     }
 
     private fun execScripts(ctx: BuildContext, wsPath: Path) {
         val scriptFiles = listOf("pre.sh", "job.sh", "post.sh")
 
-        logger.info("build ${ctx.buildId}: looking for scripts $scriptFiles in $scriptsDir/")
+        ctx.log("build ${ctx.buildId}: looking for scripts $scriptFiles in $scriptsDir/")
 
         scriptFiles.forEach { script ->
             val scriptFile = shFile(wsPath, script)
             if (scriptFile.exists()) {
-                logger.info("build ${ctx.buildId}: found script $script, running it")
+                ctx.log("build ${ctx.buildId}: found script $script, running it")
 
-                ctx.logFile.append("\nRunning build file: $script\n")
+                ctx.log("Running build file: $script")
 
                 val scriptProcess = processes.builder(ctx.config, ctx.logFile, ctx.rev)
                     .command(scriptFile.absolutePath)
@@ -95,11 +100,11 @@ class GitRunner(
                 handles.add(Handle(scriptProcess.toHandle(), ctx.buildId))
 
                 val ret = scriptProcess.waitFor()
-                logger.info("build ${ctx.buildId}: script $script returned $ret")
+                ctx.log("build ${ctx.buildId}: script $script returned $ret")
 
-                ctx.logFile.append("\n$script returned $ret\n")
+                ctx.log("$script returned $ret")
             } else {
-                ctx.logFile.append("\nBuild file $scriptsDir/$script not found\n")
+                ctx.log("Build file $scriptsDir/$script not found")
             }
         }
     }
@@ -113,9 +118,16 @@ class GitRunner(
 
 
 class FailedToClone(
-    private val buildId: BuildId,
-    private val gitRepo: String
-) : RuntimeException() {
-    override fun toString() =
-        "${this::class}: failed to clone $gitRepo for build id $buildId"
-}
+    buildId: BuildId,
+    gitRepo: String
+) : RuntimeException(
+    "${FailedToClone::class}: failed to clone $gitRepo for build id $buildId"
+)
+
+class FailedToCheckout(
+    buildId: BuildId,
+    gitRepo: String,
+    rev: String
+) : RuntimeException(
+    "failed to checkout revision $rev on repo $gitRepo for build id $buildId"
+)

src/main/resources/banner.txt

@@ -0,0 +1,5 @@
+ █████  ██      ███████ ██████  ███████ ██████                ██████   ██████ ███████      █████   █████  ███████
+██   ██ ██      ██      ██   ██ ██      ██   ██               ██   ██ ██      ██          ██   ██ ██   ██ ██
+███████ ██      █████   ██████  █████   ██   ██     █████     ██████  ██      █████       ███████ ███████ ███████
+██   ██ ██      ██      ██   ██ ██      ██   ██               ██   ██ ██      ██          ██   ██ ██   ██      ██
+██   ██ ███████ ██      ██   ██ ███████ ██████                ██   ██  ██████ ███████     ██   ██ ██   ██ ███████