public ContextData beforeInvoke(Identification id) {
try {
Span spanData = ContextGenerator.generateSpanFromThreadLocal(id);
// 设置SpanType的类型
spanData.setTag(Tag.SPAN_TYPE, SpanType.RPC_CLIENT);
if (Config.BuriedPoint.PRINTF) {
logger.debug(
"TraceId:"
+ spanData.getTraceId()
+ "\tParentLevelId:"
+ spanData.getParentLevel()
+ "\tLevelId:"
+ spanData.getLevelId()
+ "\tbusinessKey:"
+ spanData.getBusinessKey());
}
CurrentThreadSpanStack.push(spanData);
sendRequestSpan(spanData, id);
return new ContextData(
spanData.getTraceId(), generateSubParentLevelId(spanData), spanData.getRouteKey());
} catch (Throwable t) {
logger.error(t.getMessage(), t);
return new EmptyContextData();
}
}
protected ContextData beforeInvoke(Span spanData, Identification id) {
if (Config.BuriedPoint.PRINTF) {
easyLogger.debug(
"TraceId:"
+ spanData.getTraceId()
+ "\tParentLevelId:"
+ spanData.getParentLevel()
+ "\tLevelId:"
+ spanData.getLevelId()
+ "\tbusinessKey:"
+ spanData.getBusinessKey());
}
// 将新创建的Context存放到ThreadLocal栈中。
CurrentThreadSpanStack.push(spanData);
// 根据SpanData生成RequestSpan，并保存
CurrentThreadSpanStack.push(spanData);
sendRequestSpan(spanData, id);
// 并将当前的Context返回回去
return new ContextData(spanData);
}
public DynamicType.Builder<?> define(String transformClassName, DynamicType.Builder<?> builder)
throws PluginException {
String interceptorDefineClassName = this.getClass().getName();
if (StringUtil.isEmpty(transformClassName)) {
logger.warn(
"classname of being intercepted is not defined by {}.", interceptorDefineClassName);
return builder;
}
logger.debug(
"prepare to enhance class {} by {}.", transformClassName, interceptorDefineClassName);
/** find witness classes for enhance class */
String[] witnessClasses = witnessClasses();
if (witnessClasses != null) {
for (String witnessClass : witnessClasses) {
Resolution witnessClassResolution = PluginBootstrap.CLASS_TYPE_POOL.describe(witnessClass);
if (!witnessClassResolution.isResolved()) {
logger.warn(
"enhance class {} by plugin {} is not working. Because witness class {} is not existed.",
transformClassName,
interceptorDefineClassName,
witnessClass);
return builder;
}
}
}
/** find origin class source code for interceptor */
DynamicType.Builder<?> newClassBuilder = this.enhance(transformClassName, builder);
logger.debug(
"enhance class {} by {} completely.", transformClassName, interceptorDefineClassName);
return newClassBuilder;
}
protected void afterInvoke() {
try {
// 弹出上下文的栈顶中的元素
Span spanData = CurrentThreadSpanStack.pop();
if (Config.BuriedPoint.PRINTF) {
easyLogger.debug(
"TraceId-ACK:"
+ spanData.getTraceId()
+ "\tParentLevelId:"
+ spanData.getParentLevel()
+ "\tLevelId:"
+ spanData.getLevelId()
+ "\tbusinessKey:"
+ spanData.getBusinessKey());
}
sendAckSpan(spanData);
} catch (Throwable t) {
easyLogger.error(t.getMessage(), t);
}
}