From 235c448c8f28626e4af445e9955b0a9abe87ff82 Mon Sep 17 00:00:00 2001
From: Janus Varmarken <varmarken@gmail.com>
Date: Wed, 15 Aug 2018 13:59:37 -0700
Subject: [PATCH] Stashing preliminary work on sequence extraction

---
 .../uci/iotproject/SequenceExtraction.java    | 57 +++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 Code/Projects/SmartPlugDetector/src/main/java/edu/uci/iotproject/SequenceExtraction.java

diff --git a/Code/Projects/SmartPlugDetector/src/main/java/edu/uci/iotproject/SequenceExtraction.java b/Code/Projects/SmartPlugDetector/src/main/java/edu/uci/iotproject/SequenceExtraction.java
new file mode 100644
index 0000000..ddf8010
--- /dev/null
+++ b/Code/Projects/SmartPlugDetector/src/main/java/edu/uci/iotproject/SequenceExtraction.java
@@ -0,0 +1,57 @@
+package edu.uci.iotproject;
+
+import edu.uci.iotproject.comparison.seqalignment.AlignmentPricer;
+import edu.uci.iotproject.comparison.seqalignment.SequenceAlignment;
+import org.pcap4j.core.PcapPacket;
+
+import java.util.List;
+
+/**
+ * TODO add class documentation.
+ *
+ * @author Janus Varmarken
+ */
+public class SequenceExtraction {
+
+
+    private final SequenceAlignment<Integer> mAlignmentAlg;
+
+
+    public SequenceExtraction() {
+        mAlignmentAlg = new SequenceAlignment<>(new AlignmentPricer<>((i1,i2) -> Math.abs(i1-i2), i -> 10));
+    }
+
+
+    public SequenceExtraction(SequenceAlignment<Integer> alignmentAlgorithm) {
+        mAlignmentAlg = alignmentAlgorithm;
+    }
+
+    /**
+     *
+     * @param convsForAction A set of {@link Conversation}s known to be associated with a single type of user action.
+     */
+    public void extract(List<Conversation> convsForAction) {
+        int maxDifference = 0;
+
+        for (int i = 0; i < convsForAction.size(); i++) {
+            for (int j = i+1; j < convsForAction.size(); i++) {
+                Integer[] sequence1 = getPacketLengthSequence(convsForAction.get(i));
+                Integer[] sequence2 = getPacketLengthSequence(convsForAction.get(j));
+                int alignmentCost = mAlignmentAlg.calculateAlignment(sequence1, sequence2);
+                if (alignmentCost > maxDifference) {
+                    maxDifference = alignmentCost;
+                }
+            }
+        }
+
+    }
+
+    private Integer[] getPacketLengthSequence(Conversation c) {
+        List<PcapPacket> packets = c.getPackets();
+        Integer[] packetLengthSequence = new Integer[packets.size()];
+        for (int i = 0; i < packetLengthSequence.length; i++) {
+            packetLengthSequence[i] = packets.get(i).length();
+        }
+        return packetLengthSequence;
+    }
+}
-- 
2.34.1