标签：tin event protoc starting span top 详细 opened listener
Tomcat-NIO启动源码分析，关于Tomcat响应一次HTTP请求进行详细的分析。Tomcat版本：9.0.6
启动Tomcat方式这里采取编程的方式，maven引入坐标
<dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-core</artifactId> <version>9.0.6</version> </dependency>
Tomcat tomcat = new Tomcat(); Connector connector = new Connector(); connector.setPort(8080); tomcat.setConnector(connector); tomcat.start(); tomcat.getServer().await();
@Override public final synchronized void start() throws LifecycleException { //state默认是 LifecycleState.NEW，首次执行时，先通过init（）方法实现初始化 if (state.equals(LifecycleState.NEW)) { init(); } try { setStateInternal(LifecycleState.STARTING_PREP, null, false); //初始化之后，开始启动tomcat服务器 startInternal();
........... }
LifecycleBase 是 Tomcat中初始化的server的父类，当Tomcat的StandardServer调用start()方法时，会去执行LifecycleBase的 start 方法
public enum LifecycleState { NEW(false, null), INITIALIZING(false, Lifecycle.BEFORE_INIT_EVENT), INITIALIZED(false, Lifecycle.AFTER_INIT_EVENT), STARTING_PREP(false, Lifecycle.BEFORE_START_EVENT), STARTING(true, Lifecycle.START_EVENT), STARTED(true, Lifecycle.AFTER_START_EVENT), STOPPING_PREP(true, Lifecycle.BEFORE_STOP_EVENT), STOPPING(false, Lifecycle.STOP_EVENT), STOPPED(false, Lifecycle.AFTER_STOP_EVENT), DESTROYING(false, Lifecycle.BEFORE_DESTROY_EVENT), DESTROYED(false, Lifecycle.AFTER_DESTROY_EVENT), FAILED(false, null); private final boolean available; private final String lifecycleEvent;
对应事件名
1 /** 2 * The LifecycleEvent type for the "component before init" event. 3 */ 4 public static final String BEFORE_INIT_EVENT = "before_init"; 5 6 7 /** 8 * The LifecycleEvent type for the "component after init" event. 9 */ 10 public static final String AFTER_INIT_EVENT = "after_init"; 11 12 13 /** 14 * The LifecycleEvent type for the "component start" event. 15 */ 16 public static final String START_EVENT = "start"; 17 18 19 /** 20 * The LifecycleEvent type for the "component before start" event. 21 */ 22 public static final String BEFORE_START_EVENT = "before_start"; 23 24 25 /** 26 * The LifecycleEvent type for the "component after start" event. 27 */ 28 public static final String AFTER_START_EVENT = "after_start"; 29 30 31 /** 32 * The LifecycleEvent type for the "component stop" event. 33 */ 34 public static final String STOP_EVENT = "stop"; 35 36 37 /** 38 * The LifecycleEvent type for the "component before stop" event. 39 */ 40 public static final String BEFORE_STOP_EVENT = "before_stop"; 41 42 43 /** 44 * The LifecycleEvent type for the "component after stop" event. 45 */ 46 public static final String AFTER_STOP_EVENT = "after_stop"; 47 48 49 /** 50 * The LifecycleEvent type for the "component after destroy" event. 51 */ 52 public static final String AFTER_DESTROY_EVENT = "after_destroy"; 53 54 55 /** 56 * The LifecycleEvent type for the "component before destroy" event. 57 */ 58 public static final String BEFORE_DESTROY_EVENT = "before_destroy"; 59 60 61 /** 62 * The LifecycleEvent type for the "periodic" event. 63 */ 64 public static final String PERIODIC_EVENT = "periodic"; 65 66 67 /** 68 * The LifecycleEvent type for the "configure_start" event. Used by those 69 * components that use a separate component to perform configuration and 70 * need to signal when configuration should be performed - usually after 71 * {@link #BEFORE_START_EVENT} and before {@link #START_EVENT}. 72 */ 73 public static final String CONFIGURE_START_EVENT = "configure_start"; 74 75 76 /** 77 * The LifecycleEvent type for the "configure_stop" event. Used by those 78 * components that use a separate component to perform configuration and 79 * need to signal when de-configuration should be performed - usually after 80 * {@link #STOP_EVENT} and before {@link #AFTER_STOP_EVENT}. 81 */ 82 public static final String CONFIGURE_STOP_EVENT = "configure_stop";
public enum LifecycleState {
NEW(false, null),
INITIALIZING(false, Lifecycle.BEFORE_INIT_EVENT),
INITIALIZED(false, Lifecycle.AFTER_INIT_EVENT),
STARTING_PREP(false, Lifecycle.BEFORE_START_EVENT),
STARTING(true, Lifecycle.START_EVENT),
STARTED(true, Lifecycle.AFTER_START_EVENT),
STOPPING_PREP(true, Lifecycle.BEFORE_STOP_EVENT),
STOPPING(false, Lifecycle.STOP_EVENT),
STOPPED(false, Lifecycle.AFTER_STOP_EVENT),
DESTROYING(false, Lifecycle.BEFORE_DESTROY_EVENT),
DESTROYED(false, Lifecycle.AFTER_DESTROY_EVENT),
FAILED(false, null);
private final boolean available;
private final String lifecycleEvent;
标签：tin event protoc starting span top 详细 opened listener
原文地址：https://www.cnblogs.com/coding400/p/10526993.html
