merge: Introduce schema for trace API (#88)

This pull request updates the OpenDC trace API to support proper specification 
of a schema of the tables exposed by the traces. This functionality makes it easier 
for the API consumer to understand the types exposed by the API.

## Implementation Notes :hammer_and_pick:

* Introduce type system for trace API
* Add benchmarks for odcvm trace format 
* Add benchmarks for Azure trace format
* Add conformance suite for OpenDC trace API 

## External Dependencies :four_leaf_clover:

* N/A

## Breaking API Changes :warning:

* Removal of typed `TableColumn`. Instead, `TableColumn` instances are now 
   used to describe the columns belonging to some table.
* `TableReader` and `TableWriter` do not support accessing arbitrary objects 
   anymore. Instead, only the types supported by the type system are exposed.

1 files changed, 29 insertions, 10 deletions

diff --git a/opendc-trace/opendc-trace-gwf/src/test/kotlin/org/opendc/trace/gwf/GwfTraceFormatTest.kt b/opendc-trace/opendc-trace-gwf/src/test/kotlin/org/opendc/trace/gwf/GwfTraceFormatTest.kt
index 411d45d0..a8c3a715 100644
--- a/opendc-trace/opendc-trace-gwf/src/test/kotlin/org/opendc/trace/gwf/GwfTraceFormatTest.kt
+++ b/opendc-trace/opendc-trace-gwf/src/test/kotlin/org/opendc/trace/gwf/GwfTraceFormatTest.kt
@@ -24,7 +24,10 @@ package org.opendc.trace.gwf
 
 import org.junit.jupiter.api.*
 import org.junit.jupiter.api.Assertions.*
+import org.opendc.trace.TableColumn
+import org.opendc.trace.TableReader
 import org.opendc.trace.conv.*
+import org.opendc.trace.testkit.TableReaderTestKit
 import java.nio.file.Paths
 import java.time.Duration
 import java.time.Instant
@@ -32,6 +35,7 @@ import java.time.Instant
 /**
  * Test suite for the [GwfTraceFormat] class.
  */
+@DisplayName("GWF TraceFormat")
 internal class GwfTraceFormatTest {
     private val format = GwfTraceFormat()
 
@@ -62,11 +66,11 @@ internal class GwfTraceFormatTest {
 
         assertAll(
             { assertTrue(reader.nextRow()) },
-            { assertEquals("0", reader.get(TASK_WORKFLOW_ID)) },
-            { assertEquals("1", reader.get(TASK_ID)) },
-            { assertEquals(Instant.ofEpochSecond(16), reader.get(TASK_SUBMIT_TIME)) },
-            { assertEquals(Duration.ofSeconds(11), reader.get(TASK_RUNTIME)) },
-            { assertEquals(emptySet<String>(), reader.get(TASK_PARENTS)) },
+            { assertEquals("0", reader.getString(TASK_WORKFLOW_ID)) },
+            { assertEquals("1", reader.getString(TASK_ID)) },
+            { assertEquals(Instant.ofEpochSecond(16), reader.getInstant(TASK_SUBMIT_TIME)) },
+            { assertEquals(Duration.ofSeconds(11), reader.getDuration(TASK_RUNTIME)) },
+            { assertEquals(emptySet<String>(), reader.getSet(TASK_PARENTS, String::class.java)) },
         )
     }
 
@@ -81,11 +85,26 @@ internal class GwfTraceFormatTest {
 
         assertAll(
             { assertTrue(reader.nextRow()) },
-            { assertEquals("0", reader.get(TASK_WORKFLOW_ID)) },
-            { assertEquals("7", reader.get(TASK_ID)) },
-            { assertEquals(Instant.ofEpochSecond(87), reader.get(TASK_SUBMIT_TIME)) },
-            { assertEquals(Duration.ofSeconds(11), reader.get(TASK_RUNTIME)) },
-            { assertEquals(setOf("4", "5", "6"), reader.get(TASK_PARENTS)) },
+            { assertEquals("0", reader.getString(TASK_WORKFLOW_ID)) },
+            { assertEquals("7", reader.getString(TASK_ID)) },
+            { assertEquals(Instant.ofEpochSecond(87), reader.getInstant(TASK_SUBMIT_TIME)) },
+            { assertEquals(Duration.ofSeconds(11), reader.getDuration(TASK_RUNTIME)) },
+            { assertEquals(setOf("4", "5", "6"), reader.getSet(TASK_PARENTS, String::class.java)) },
         )
     }
+
+    @DisplayName("TableReader for Tasks")
+    @Nested
+    inner class TasksTableReaderTest : TableReaderTestKit() {
+        override lateinit var reader: TableReader
+        override lateinit var columns: List<TableColumn>
+
+        @BeforeEach
+        fun setUp() {
+            val path = Paths.get(checkNotNull(GwfTraceFormatTest::class.java.getResource("/trace.gwf")).toURI())
+
+            columns = format.getDetails(path, TABLE_TASKS).columns
+            reader = format.newReader(path, TABLE_TASKS, null)
+        }
+    }
 }