Add yaml parser and docker executor

1 files changed, 44 insertions, 0 deletions

diff --git a/crashboxd/src/main/scala/io/crashbox/ci/Parser.scala b/crashboxd/src/main/scala/io/crashbox/ci/Parser.scala
new file mode 100644
index 0000000..5a58612
--- /dev/null
+++ b/crashboxd/src/main/scala/io/crashbox/ci/Parser.scala
@@ -0,0 +1,44 @@
+package io.crashbox.ci
+
+import io.crashbox.ci.yaml._
+import io.crashbox.ci.yaml.DefaultReaders._
+
+object Parser {
+  sealed trait Result
+  case class Success(buildDef: BuildDef) extends Result
+  case class Failure(error: String) extends Result
+
+  implicit object TaskDefReader extends YamlReader[TaskDef] {
+    def read(value: YamlValue) = {
+      val items = value.convertTo[Map[String, YamlValue]]
+      val image = items
+        .getOrElse("image",
+                   throw new YamlFormatException("no image specified"))
+        .convertTo[String]
+      val script = items
+        .getOrElse("script",
+                   throw new YamlFormatException("no script specified"))
+        .convertTo[String]
+      TaskDef(DockerEnvironment(image), script)
+    }
+  }
+
+  implicit object BuildDefReader extends YamlReader[BuildDef] {
+    def read(value: YamlValue) = {
+      val items = value.convertTo[Map[String, YamlValue]]
+      val tasks = items
+        .getOrElse("tasks",
+                   throw new YamlFormatException("no tasks specified"))
+        .convertTo[Map[String, TaskDef]]
+      BuildDef(tasks.values.toSeq)
+    }
+  }
+
+  def parse(build: String): Result =
+    try {
+      Success(Yaml.parse(build).convertTo[BuildDef])
+    } catch {
+      case ex: YamlFormatException => Failure(ex.toString)
+    }
+
+}