/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.skywalking.apm.agent.core.conf;

import org.apache.skywalking.apm.agent.core.context.trace.TraceSegment;
import org.apache.skywalking.apm.agent.core.logging.core.LogLevel;
import org.apache.skywalking.apm.agent.core.logging.core.WriterFactory;

/**
 * This is the core config in sniffer agent.
 *
 * @author wusheng
 */
public class Config {

    public static class Agent {
        /**
         * Namespace isolates headers in cross process propagation. The HEADER name will be `HeaderName:Namespace`.
         */
        public static String NAMESPACE = "";

        /**
         * Application code is showed in sky-walking-ui. Suggestion: set an unique name for each application, one
         * application's nodes share the same code.
         */
        public static String APPLICATION_CODE = "";

        /**
         * Authentication active is based on backend setting, see application.yml for more details.
         * For most scenarios, this needs backend extensions, only basic match auth provided in default implementation.
         */
        public static String AUTHENTICATION = "";

        /**
         * Negative or zero means off, by default. {@link #SAMPLE_N_PER_3_SECS} means sampling N {@link TraceSegment} in
         * 10 seconds tops.
         */
        public static int SAMPLE_N_PER_3_SECS = -1;

        /**
         * If the operation name of the first span is included in this set, this segment should be ignored.
         */
        public static String IGNORE_SUFFIX = ".jpg,.jpeg,.js,.css,.png,.bmp,.gif,.ico,.mp3,.mp4,.html,.svg";

        /**
         * The max number of spans in a single segment. Through this config item, skywalking keep your application
         * memory cost estimated.
         */
        public static int SPAN_LIMIT_PER_SEGMENT = 300;

        /**
         * If true, skywalking agent will save all instrumented classes files in `/debugging` folder.
         * Skywalking team may ask for these files in order to resolve compatible problem.
         */
        public static boolean IS_OPEN_DEBUGGING_CLASS = false;

        /**
         * Specify register.status dir ,This is an option, the default is AGENT_HOME/option/reset.status.
         */
        public static String REGISTER_STATUS_DIR = "skywalking-agent/option";

        /**
         * Specify instance_uuid to ensure that the whole show is unique, for example: applicationName_ip_12
         */
        public static String INSTANCE_UUID = "";
        /**
         * enabled means that the reset function is enabled, and disabled means that the reset function is not enabled. A reset can be triggered by modifying the configuration file only if the reset feature is enabled.
         */
        public static String RESETER_LISTENER = "disabled";

    }

    public static class Collector {
        /**
         * grpc channel status check interval
         */
        public static long GRPC_CHANNEL_CHECK_INTERVAL = 30;
        /**
         * application and service registry check interval
         */
        public static long SERVICE_AND_ENDPOINT_REGISTER_CHECK_INTERVAL = 3;
        /**
         * Collector skywalking trace receiver service addresses.
         */
        public static String BACKEND_SERVICE = "";
    }

    public static class Jvm {
        /**
         * The buffer size of collected JVM info.
         */
        public static int BUFFER_SIZE = 60 * 10;
    }

    public static class Buffer {
        public static int CHANNEL_SIZE = 5;

        public static int BUFFER_SIZE = 300;
    }

    public static class Dictionary {
        /**
         * The buffer size of application codes and peer
         */
        public static int APPLICATION_CODE_BUFFER_SIZE = 10 * 10000;

        public static int OPERATION_NAME_BUFFER_SIZE = 1000 * 10000;
    }

    public static class Logging {
        /**
         * Log file name.
         */
        public static String FILE_NAME = "skywalking-api.log";

        /**
         * Log files directory. Default is blank string, means, use "system.out" to output logs.
         *
         * Ref to {@link WriterFactory#getLogWriter()}
         */
        public static String DIR = "";

        /**
         * The max size of log file. If the size is bigger than this, archive the current file, and write into a new
         * file.
         */
        public static int MAX_FILE_SIZE = 300 * 1024 * 1024;

        /**
         * The log level. Default is debug.
         */
        public static LogLevel LEVEL = LogLevel.DEBUG;
    }

    public static class Plugin {
        public static class MongoDB {
            /**
             * If true, trace all the parameters, default is false. Only trace the operation, not include parameters.
             */
            public static boolean TRACE_PARAM = false;
        }

        public static class Elasticsearch {

            public static boolean TRACE_DSL = false;
        }
    }
}