Add MarkdownLogWriter

jpos/src/main/java/org/jpos/util/MarkdownLogWriter.java

@@ -0,0 +1,59 @@
+/*
+ * jPOS Project [http://jpos.org]
+ * Copyright (C) 2000-2022 jPOS Software SRL
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.jpos.util;
+
+import org.jpos.iso.ISODate;
+import org.jpos.log.LogRenderer;
+import org.jpos.log.LogRendererRegistry;
+
+import java.io.PrintStream;
+import java.time.Duration;
+import java.time.Instant;
+import java.time.LocalDateTime;
+import java.time.ZoneId;
+
+public class MarkdownLogWriter implements LogEventWriter {
+    private PrintStream ps;
+    private final LogRenderer<LogEvent> renderer = LogRendererRegistry.getRenderer(LogEvent.class, LogRenderer.Type.MARKDOWN);
+    private Instant start;
+
+    @Override
+    public void write(LogEvent ev) {
+        renderer.render(ev, ps, "");
+    }
+
+    @Override
+    public void setPrintStream(PrintStream ps) {
+        this.ps = ps;
+        start = Instant.now();
+        ps.printf ("# Log Start %s (%d)%n", LocalDateTime.ofInstant(start, ZoneId.systemDefault()), ps.hashCode());
+    }
+
+    @Override
+    public void close() {
+        Instant now = Instant.now();
+        ps.printf ("# Log End %s (%s)%n",
+            LocalDateTime.ofInstant(now, ZoneId.systemDefault()),
+            ISODate.formatDuration(Duration.between(start,now))
+        );
+        if (ps != System.out && ps != System.err) {
+            ps.close();
+        }
+    }
+}