Merge pull request #3365 from ingef/feature/smtp-apppender

Draft: SMTP Appender

backend/src/main/java/com/bakdata/conquery/util/SMTPAppenderFactory.java

@@ -0,0 +1,63 @@
+package com.bakdata.conquery.util;
+
+import java.net.URI;
+
+import ch.qos.logback.access.net.SMTPAppender;
+import ch.qos.logback.access.spi.IAccessEvent;
+import ch.qos.logback.classic.LoggerContext;
+import ch.qos.logback.core.Appender;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.google.common.base.Strings;
+import io.dropwizard.logging.common.AbstractAppenderFactory;
+import io.dropwizard.logging.common.async.AsyncAppenderFactory;
+import io.dropwizard.logging.common.filter.LevelFilterFactory;
+import io.dropwizard.logging.common.layout.LayoutFactory;
+import lombok.Data;
+import lombok.extern.slf4j.Slf4j;
+
+@Slf4j
+@JsonTypeName("SMTP")
+@Data
+public class SMTPAppenderFactory extends AbstractAppenderFactory<IAccessEvent> {
+
+	private String from;
+	private String[] to;
+	private URI server;
+	private String subject;
+
+
+	@Override
+	public Appender<IAccessEvent> build(LoggerContext context, String applicationName, LayoutFactory<IAccessEvent> layoutFactory, LevelFilterFactory<IAccessEvent> levelFilterFactory, AsyncAppenderFactory<IAccessEvent> asyncAppenderFactory) {
+		final SMTPAppender appender = new SMTPAppender();
+		appender.setName("smtp-appender");
+
+		appender.setFrom(getFrom());
+		appender.setSmtpHost(server.getHost());
+		appender.setSMTPPort(server.getPort());
+
+		if (!Strings.isNullOrEmpty(getServer().getUserInfo())) {
+			final String[] userInfo = getServer().getUserInfo().split(":");
+			final String userName = userInfo[0];
+			final String password = userInfo.length > 1 ? userInfo[1] : null;
+
+			appender.setPassword(password);
+			appender.setUsername(userName);
+		}
+
+		appender.setSubject(getSubject());
+
+		for (String target : getTo()) {
+			appender.addTo(target);
+		}
+
+		appender.setContext(context);
+		appender.setAsynchronousSending(true);
+
+		appender.setLayout(buildLayout(context, layoutFactory));
+		appender.addFilter(levelFilterFactory.build(threshold));
+		getFilterFactories().forEach(f -> appender.addFilter(f.build()));
+
+		appender.start();
+		return wrapAsync(appender, asyncAppenderFactory);
+	}
+}