Add MOE equivalence for 2018-09-14 sync

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=212996616

java/google/registry/proxy/GcpJsonFormatter.java

@@ -1,138 +0,0 @@
-// Copyright 2017 The Nomulus Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package google.registry.proxy;
-
-import com.fasterxml.jackson.annotation.JsonProperty;
-import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.google.auto.value.AutoValue;
-import java.io.PrintWriter;
-import java.io.StringWriter;
-import java.util.logging.Formatter;
-import java.util.logging.Level;
-import java.util.logging.LogRecord;
-
-/**
- * JUL formatter that formats log messages in a single-line JSON that Stackdriver logging can parse.
- *
- * <p>There is no clear documentation on how to achieve this or on the format of the JSON. This is
- * much a trial and error process, plus a lot of searching. To summarize, if the logs are printed to
- * {@code STDOUT} or {@code STDERR} in a single-line JSON, with the content in the {@code message}
- * field and the log level in the {@code severity} field, it will be picked up by Stackdriver
- * logging agent running in GKE containers and logged at correct level..
- *
- * @see <a
- *     href="https://medium.com/retailmenot-engineering/formatting-python-logs-for-stackdriver-5a5ddd80761c">
- *     Formatting Python Logs from Stackdriver</a> <a
- *     href="https://stackoverflow.com/questions/44164730/gke-stackdriver-java-logback-logging-format">
- *     GKE & Stackdriver: Java logback logging format?</a>
- */
-class GcpJsonFormatter extends Formatter {
-
-  private static final ObjectMapper MAPPER = new ObjectMapper();
-
-  @Override
-  public String format(LogRecord record) {
-    try {
-      return MAPPER.writeValueAsString(LogEvent.create(record)) + "\n";
-    } catch (JsonProcessingException e) {
-      throw new RuntimeException(e);
-    }
-  }
-
-  @AutoValue
-  abstract static class LogEvent {
-
-    /** Field that determines the log level. */
-    @JsonProperty("severity")
-    abstract String severity();
-
-    /**
-     * Field that stores the calling class and function when the log occurs.
-     *
-     * <p>This field is not used by Stackdriver, but it is useful and can be found when the log
-     * entries are expanded
-     */
-    @JsonProperty("source")
-    abstract String source();
-
-    /** Field that contains the content, this will show up as the main entry in a log. */
-    @JsonProperty("message")
-    abstract String message();
-
-    static LogEvent create(LogRecord record) {
-      // Add an extra newline before the message. Stackdriver does not show newlines correctly, and
-      // treats them as whitespace. If you want to see correctly formatted log message, expand the
-      // log and look for the jsonPayload.message field. This newline makes sure that the entire
-      // message starts on its own line, so that indentation within the message is correct.
-
-      String message = "\n" + record.getMessage();
-      Level level = record.getLevel();
-      // See
-      // https://github.com/GoogleCloudPlatform/google-cloud-java/blob/master/google-cloud-logging/src/main/java/com/google/cloud/logging/Severity.java
-      // on how {@code Level} is mapped to severity.
-      String severity;
-      switch (level.intValue()) {
-          // FINEST
-        case 300:
-          // FINER
-        case 400:
-          // FINE
-        case 500:
-          severity = "DEBUG";
-          break;
-          // CONFIG
-        case 700:
-          // INFO
-        case 800:
-          severity = "INFO";
-          break;
-          // WARNING
-        case 900:
-          severity = "WARNING";
-          break;
-          // SEVERE
-        case 1000:
-          severity = "ERROR";
-          break;
-        default:
-          severity = "DEFAULT";
-      }
-
-      // The rest is mostly lifted from java.util.logging.SimpleFormatter.
-      String stacktrace = "";
-      if (record.getThrown() != null) {
-        StringWriter sw = new StringWriter();
-        try (PrintWriter pw = new PrintWriter(sw)) {
-          pw.println();
-          record.getThrown().printStackTrace(pw);
-        }
-        stacktrace = sw.toString();
-      }
-
-      String source;
-      if (record.getSourceClassName() != null) {
-        source = record.getSourceClassName();
-        if (record.getSourceMethodName() != null) {
-          source += " " + record.getSourceMethodName();
-        }
-      } else {
-        source = record.getLoggerName();
-      }
-
-      return new AutoValue_GcpJsonFormatter_LogEvent(severity, source, message + stacktrace);
-    }
-  }
-}