chrome tracing is pretty cool

java_console/models/src/com/rusefi/tracing/Entry.java

@@ -0,0 +1,56 @@
+package com.rusefi.tracing;
+
+public class Entry {
+    private final String name;
+    private final Phase phase;
+    private final double timestampSeconds;
+
+    public Entry(String name, Phase phase, double timestampSeconds) {
+        this.name = name;
+        this.phase = phase;
+        this.timestampSeconds = timestampSeconds;
+    }
+
+    private static void AppendKeyValuePair(StringBuilder sb, String x, String y) {
+        sb.append('"');
+        sb.append(x);
+        sb.append("\":\"");
+        sb.append(y);
+        sb.append('"');
+    }
+
+    private static void AppendKeyValuePair(StringBuilder sb, String x, int y) {
+        sb.append('"');
+        sb.append(x);
+        sb.append("\":");
+        sb.append(y);
+    }
+
+    private static void AppendKeyValuePair(StringBuilder sb, String x, double y) {
+        sb.append('"');
+        sb.append(x);
+        sb.append("\":");
+        sb.append(y);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+
+        sb.append("{");
+        AppendKeyValuePair(sb, "name", name);
+
+        sb.append(",");
+        AppendKeyValuePair(sb, "ph", phase.toString());
+        sb.append(",");
+        AppendKeyValuePair(sb, "tid", 0);
+        sb.append(",");
+
+        AppendKeyValuePair(sb, "pid", 0);
+        sb.append(",");
+        AppendKeyValuePair(sb, "ts", timestampSeconds);
+        sb.append("}");
+
+        return sb.toString();
+    }
+}

java_console/models/src/com/rusefi/tracing/Phase.java

@@ -0,0 +1,7 @@
+package com.rusefi.tracing;
+
+public enum Phase {
+    B,
+    E,
+    i,
+}

java_console/models/src/com/rusefi/tracing/test/EntryTest.java

@@ -0,0 +1,17 @@
+package com.rusefi.tracing.test;
+
+import com.rusefi.tracing.Entry;
+import com.rusefi.tracing.Phase;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class EntryTest {
+    @Test
+    public void testToString() {
+        Entry e = new Entry("hello", Phase.E, 0.1);
+
+        assertEquals("{\"name\":\"hello\",\"ph\":\"E\",\"tid\":0,\"pid\":0,\"ts\":0.1}", e.toString());
+
+    }
+}