io.fabric8.kubernetes.log4j.lookup.Log4jConfig Maven / Gradle / Ivy

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Provides a lookup to use Kubernetes attributes in a Log4j Core configuration.
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/*
 * Copyright (C) 2015 Red Hat, Inc.
 *
 * 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 io.fabric8.kubernetes.log4j.lookup;

import io.fabric8.kubernetes.client.Config;
import org.apache.logging.log4j.util.PropertiesUtil;

import java.time.Duration;

/**
 * Obtains properties used to configure the Kubernetes client.
 */
final class Log4jConfig {

  // Prefixes used in Log4j properties
  private static final String[] PREFIXES = { "log4j2.kubernetes.client.", "spring.cloud.kubernetes.client." };
  // Recognized Log4j properties
  private static final String API_VERSION = "apiVersion";
  private static final String CA_CERT_FILE = "caCertFile";
  private static final String CA_CERT_DATA = "caCertData";
  private static final String CLIENT_CERT_FILE = "clientCertFile";
  private static final String CLIENT_CERT_DATA = "clientCertData";
  private static final String CLIENT_KEY_FILE = "clientKeyFile";
  private static final String CLIENT_KEY_DATA = "clientKeyData";
  private static final String CLIENT_KEY_ALGO = "clientKeyAlgo";
  private static final String CLIENT_KEY_PASSPHRASE = "clientKeyPassphrase";
  private static final String CONNECTION_TIMEOUT = "connectionTimeout";
  private static final String HTTP_PROXY = "httpProxy";
  private static final String HTTPS_PROXY = "httpsProxy";
  private static final String LOGGING_INTERVAL = "loggingInterval";
  private static final String MASTER_URL = "masterUrl";
  private static final String NAMESPACE = "namespace";
  private static final String NO_PROXY = "noProxy";
  private static final String PASSWORD = "password";
  private static final String PROXY_USERNAME = "proxyUsername";
  private static final String PROXY_PASSWORD = "proxyPassword";
  private static final String REQUEST_TIMEOUT = "requestTimeout";
  private static final String TRUST_CERTS = "trustCerts";
  private static final String USERNAME = "username";
  private static final String WATCH_RECONNECT_INTERVAL = "watchReconnectInterval";
  private static final String WATCH_RECONNECT_LIMIT = "watchReconnectLimit";

  private final PropertiesUtil props;
  private final Config base;

  public Log4jConfig(final PropertiesUtil props, final Config base) {
    this.props = props;
    this.base = base;
  }

  public String getApiVersion() {
    return props.getStringProperty(PREFIXES, API_VERSION, base::getApiVersion);
  }

  public String getCaCertFile() {
    return props.getStringProperty(PREFIXES, CA_CERT_FILE, base::getCaCertFile);
  }

  public String getCaCertData() {
    return props.getStringProperty(PREFIXES, CA_CERT_DATA, base::getCaCertData);
  }

  public String getClientCertFile() {
    return props.getStringProperty(PREFIXES, CLIENT_CERT_FILE, base::getClientCertFile);
  }

  public String getClientCertData() {
    return props.getStringProperty(PREFIXES, CLIENT_CERT_DATA, base::getClientCertData);
  }

  public String getClientKeyFile() {
    return props.getStringProperty(PREFIXES, CLIENT_KEY_FILE, base::getClientKeyFile);
  }

  public String getClientKeyData() {
    return props.getStringProperty(PREFIXES, CLIENT_KEY_DATA, base::getClientKeyData);
  }

  public String getClientKeyAlgo() {
    return props.getStringProperty(PREFIXES, CLIENT_KEY_ALGO, base::getClientKeyAlgo);
  }

  public String getClientKeyPassphrase() {
    return props.getStringProperty(PREFIXES, CLIENT_KEY_PASSPHRASE, base::getClientKeyPassphrase);
  }

  public int getConnectionTimeout() {
    final Duration timeout = props.getDurationProperty(PREFIXES, CONNECTION_TIMEOUT, null);
    return timeout != null ? (int) timeout.toMillis() : base.getConnectionTimeout();
  }

  public String getHttpProxy() {
    return props.getStringProperty(PREFIXES, HTTP_PROXY, base::getHttpProxy);
  }

  public String getHttpsProxy() {
    return props.getStringProperty(PREFIXES, HTTPS_PROXY, base::getHttpsProxy);
  }

  public int getLoggingInterval() {
    final Duration interval = props.getDurationProperty(PREFIXES, LOGGING_INTERVAL, null);
    return interval != null ? (int) interval.toMillis() : base.getLoggingInterval();
  }

  public String getMasterUrl() {
    return props.getStringProperty(PREFIXES, MASTER_URL, base::getMasterUrl);
  }

  public String getNamespace() {
    return props.getStringProperty(PREFIXES, NAMESPACE, base::getNamespace);
  }

  public String[] getNoProxy() {
    final String result = props.getStringProperty(PREFIXES, NO_PROXY, null);
    return result != null ? result.replace("\\s", "").split(",") : base.getNoProxy();
  }

  public String getPassword() {
    return props.getStringProperty(PREFIXES, PASSWORD, base::getPassword);
  }

  public String getProxyUsername() {
    return props.getStringProperty(PREFIXES, PROXY_USERNAME, base::getProxyUsername);
  }

  public String getProxyPassword() {
    return props.getStringProperty(PREFIXES, PROXY_PASSWORD, base::getProxyPassword);
  }

  public int getRequestTimeout() {
    final Duration interval = props.getDurationProperty(PREFIXES, REQUEST_TIMEOUT, null);
    return interval != null ? (int) interval.toMillis() : base.getRequestTimeout();
  }

  public Boolean isTrustCerts() {
    return props.getBooleanProperty(PREFIXES, TRUST_CERTS, base::isTrustCerts);
  }

  public String getUsername() {
    return props.getStringProperty(PREFIXES, USERNAME, base::getUsername);
  }

  public int getWatchReconnectInterval() {
    final Duration interval = props.getDurationProperty(PREFIXES, WATCH_RECONNECT_INTERVAL, null);
    return interval != null ? (int) interval.toMillis() : base.getWatchReconnectInterval();
  }

  public int getWatchReconnectLimit() {
    final Duration interval = props.getDurationProperty(PREFIXES, WATCH_RECONNECT_LIMIT, null);
    return interval != null ? (int) interval.toMillis() : base.getWatchReconnectLimit();
  }
}