feat(trace): Add support for writing traces

This change adds a new API for writing traces in a trace format.
Currently, writing is only supported by the OpenDC VM format, but over
time the other formats will also have support for writing added.

1 files changed, 8 insertions, 0 deletions

diff --git a/opendc-trace/opendc-trace-gwf/src/main/kotlin/org/opendc/trace/gwf/GwfTraceFormat.kt b/opendc-trace/opendc-trace-gwf/src/main/kotlin/org/opendc/trace/gwf/GwfTraceFormat.kt
index 0f7b9d6e..d4287420 100644
--- a/opendc-trace/opendc-trace-gwf/src/main/kotlin/org/opendc/trace/gwf/GwfTraceFormat.kt
+++ b/opendc-trace/opendc-trace-gwf/src/main/kotlin/org/opendc/trace/gwf/GwfTraceFormat.kt
@@ -45,6 +45,10 @@ public class GwfTraceFormat : TraceFormat {
         .enable(CsvParser.Feature.ALLOW_COMMENTS)
         .enable(CsvParser.Feature.TRIM_SPACES)
 
+    override fun create(path: Path) {
+        throw UnsupportedOperationException("Writing not supported for this format")
+    }
+
     override fun getTables(path: Path): List<String> = listOf(TABLE_TASKS)
 
     override fun getDetails(path: Path, table: String): TableDetails {
@@ -71,4 +75,8 @@ public class GwfTraceFormat : TraceFormat {
             else -> throw IllegalArgumentException("Table $table not supported")
         }
     }
+
+    override fun newWriter(path: Path, table: String): TableWriter {
+        throw UnsupportedOperationException("Writing not supported for this format")
+    }
 }