com.appland.appmap.util.tinylog.AppMapConfigurationLoader Maven / Gradle / Ivy

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package com.appland.appmap.util.tinylog;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import java.util.Map;
import java.util.Properties;

import org.tinylog.Level;
import org.tinylog.configuration.ConfigurationLoader;
import org.tinylog.provider.InternalLogger;
import org.tinylog.runtime.RuntimeProvider;

public class AppMapConfigurationLoader implements ConfigurationLoader {

  @Override
  public Properties load() throws IOException {
    Properties properties = new Properties();
    final File localConfigFile = new File("appmap-log.local.properties");
    final String[] configFiles = {"appmap-log.properties", localConfigFile.getName()};

    for (String configFile : configFiles) {
      List classLoaders = RuntimeProvider.getClassLoaders();
      for (ClassLoader cl : classLoaders) {
        try (InputStream stream = cl.getResourceAsStream(configFile)) {
          if (stream != null) {
            properties.load(stream);
          }
        }
      }
    }

    // Set the level and writer after loading the default config, but allow a
    // local config to override them.
    if (com.appland.appmap.config.Properties.DisableLogFile == Boolean.TRUE) {
      properties.put("level", "WARN");
      properties.put("writer", "console");
    }

    try {
      if (localConfigFile.exists()) {
        properties.load(new FileInputStream(localConfigFile));
      }
    } catch (IOException e) {
      InternalLogger.log(Level.ERROR, e, "Failed to load " + localConfigFile.getAbsolutePath());
    }

    // Update with any appmap.log System properties.
    for (Map.Entry p : System.getProperties().entrySet()) {
      String prefix = "appmap.log.";
      String key = (String)p.getKey();
      if (!key.startsWith(prefix)) {
        continue;
      }

      properties.put(key.substring(prefix.length()), p.getValue());
    }

    return properties;
  }

}