refactor(trace): Implement trace API for WTF reader

This change updates the WTF trace reader to support the new streaming
trace API.

2 files changed, 121 insertions, 0 deletions

diff --git a/opendc-trace/opendc-trace-wtf/src/test/kotlin/org/opendc/trace/wtf/WtfTraceFormatTest.kt b/opendc-trace/opendc-trace-wtf/src/test/kotlin/org/opendc/trace/wtf/WtfTraceFormatTest.kt
new file mode 100644
index 00000000..a05a523e
--- /dev/null
+++ b/opendc-trace/opendc-trace-wtf/src/test/kotlin/org/opendc/trace/wtf/WtfTraceFormatTest.kt
@@ -0,0 +1,121 @@
+/*
+ * Copyright (c) 2021 AtLarge Research
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package org.opendc.trace.wtf
+
+import org.junit.jupiter.api.Assertions.*
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.assertThrows
+import org.opendc.trace.*
+import java.io.File
+import java.net.URL
+
+/**
+ * Test suite for the [WtfTraceFormat] class.
+ */
+class WtfTraceFormatTest {
+    @Test
+    fun testTraceExists() {
+        val input = File("src/test/resources/wtf-trace").toURI().toURL()
+        val format = WtfTraceFormat()
+        org.junit.jupiter.api.assertDoesNotThrow {
+            format.open(input)
+        }
+    }
+
+    @Test
+    fun testTraceDoesNotExists() {
+        val input = File("src/test/resources/wtf-trace").toURI().toURL()
+        val format = WtfTraceFormat()
+        assertThrows<IllegalArgumentException> {
+            format.open(URL(input.toString() + "help"))
+        }
+    }
+
+    @Test
+    fun testTables() {
+        val input = File("src/test/resources/wtf-trace").toURI().toURL()
+        val format = WtfTraceFormat()
+        val trace = format.open(input)
+
+        assertEquals(listOf(TABLE_TASKS), trace.tables)
+    }
+
+    @Test
+    fun testTableExists() {
+        val input = File("src/test/resources/wtf-trace").toURI().toURL()
+        val format = WtfTraceFormat()
+        val table = format.open(input).getTable(TABLE_TASKS)
+
+        assertNotNull(table)
+        org.junit.jupiter.api.assertDoesNotThrow { table!!.newReader() }
+    }
+
+    @Test
+    fun testTableDoesNotExist() {
+        val input = File("src/test/resources/wtf-trace").toURI().toURL()
+        val format = WtfTraceFormat()
+        val trace = format.open(input)
+
+        assertFalse(trace.containsTable("test"))
+        assertNull(trace.getTable("test"))
+    }
+
+    /**
+     * Smoke test for parsing WTF traces.
+     */
+    @Test
+    fun testTableReader() {
+        val input = File("src/test/resources/wtf-trace")
+        val trace = WtfTraceFormat().open(input.toURI().toURL())
+        val reader = trace.getTable(TABLE_TASKS)!!.newReader()
+
+        assertAll(
+            { assertTrue(reader.nextRow()) },
+            { assertEquals(362334516345962206, reader.getLong(TASK_ID)) },
+            { assertEquals(1078341553348591493, reader.getLong(TASK_WORKFLOW_ID)) },
+            { assertEquals(245604, reader.getLong(TASK_SUBMIT_TIME)) },
+            { assertEquals(8163, reader.getLong(TASK_RUNTIME)) },
+            { assertEquals(setOf(584055316413447529, 133113685133695608, 1008582348422865408), reader.get(TASK_PARENTS)) },
+        )
+
+        assertAll(
+            { assertTrue(reader.nextRow()) },
+            { assertEquals(502010169100446658, reader.getLong(TASK_ID)) },
+            { assertEquals(1078341553348591493, reader.getLong(TASK_WORKFLOW_ID)) },
+            { assertEquals(251325, reader.getLong(TASK_SUBMIT_TIME)) },
+            { assertEquals(8216, reader.getLong(TASK_RUNTIME)) },
+            { assertEquals(setOf(584055316413447529, 133113685133695608, 1008582348422865408), reader.get(TASK_PARENTS)) },
+        )
+
+        reader.close()
+    }
+
+    @Test
+    fun testTableReaderPartition() {
+        val input = File("src/test/resources/wtf-trace").toURI().toURL()
+        val format = WtfTraceFormat()
+        val table = format.open(input).getTable(TABLE_TASKS)!!
+
+        assertThrows<IllegalArgumentException> { table.newReader("test") }
+    }
+}
diff --git a/opendc-trace/opendc-trace-wtf/src/test/resources/wtf-trace/tasks/schema-1.0/part.0.parquet b/opendc-trace/opendc-trace-wtf/src/test/resources/wtf-trace/tasks/schema-1.0/part.0.parquet
new file mode 100644
index 00000000..d2044038
--- /dev/null
+++ b/opendc-trace/opendc-trace-wtf/src/test/resources/wtf-trace/tasks/schema-1.0/part.0.parquet