Add basic replay policy

2 files changed, 88 insertions, 0 deletions

diff --git a/opendc/opendc-format/src/main/kotlin/com/atlarge/opendc/format/trace/VmPlacementReader.kt b/opendc/opendc-format/src/main/kotlin/com/atlarge/opendc/format/trace/VmPlacementReader.kt
new file mode 100644
index 00000000..7caebb76
--- /dev/null
+++ b/opendc/opendc-format/src/main/kotlin/com/atlarge/opendc/format/trace/VmPlacementReader.kt
@@ -0,0 +1,37 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2019 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 com.atlarge.opendc.format.trace
+
+import java.io.Closeable
+
+/**
+ * An interface for reading VM placement data into memory.
+ */
+interface VmPlacementReader : Closeable {
+    /**
+     * Construct a map of VMs to clusters.
+     */
+    fun construct(): Map<String, String>
+}
diff --git a/opendc/opendc-format/src/main/kotlin/com/atlarge/opendc/format/trace/sc20/Sc20VmPlacementReader.kt b/opendc/opendc-format/src/main/kotlin/com/atlarge/opendc/format/trace/sc20/Sc20VmPlacementReader.kt
new file mode 100644
index 00000000..f8ce4380
--- /dev/null
+++ b/opendc/opendc-format/src/main/kotlin/com/atlarge/opendc/format/trace/sc20/Sc20VmPlacementReader.kt
@@ -0,0 +1,51 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2019 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 com.atlarge.opendc.format.trace.sc20
+
+import com.atlarge.opendc.format.trace.VmPlacementReader
+import com.fasterxml.jackson.databind.ObjectMapper
+import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
+import com.fasterxml.jackson.module.kotlin.readValue
+import java.io.InputStream
+
+/**
+ * A parser for the JSON VM placement data files used for the SC20 paper.
+ *
+ * @param input The input stream to read from.
+ * @param mapper The Jackson object mapper to use.
+ */
+class Sc20VmPlacementReader(input: InputStream, mapper: ObjectMapper = jacksonObjectMapper()) :
+    VmPlacementReader {
+    /**
+     * The environment that was read from the file.
+     */
+    private val placements = mapper.readValue<Map<String, String>>(input)
+
+    override fun construct(): Map<String, String> {
+        return placements.mapKeys { "vm__workload__${it.key}.txt" }
+    }
+
+    override fun close() {}
+}