Examples with WithPeerInfo org.apache.skywalking.apm.agent.core.context.trace.WithPeerInfo used on opensource projects

Example 1 with WithPeerInfo

use of org.apache.skywalking.apm.agent.core.context.trace.WithPeerInfo in project incubator-skywalking by apache.

the class TracingContext method inject.

/**
 * Inject the context into the given carrier, only when the active span is an exit one.
 *
 * @param carrier to carry the context for crossing process.
 * @throws IllegalStateException  if the active span isn't an exit one.
 * Ref to {@link AbstractTracerContext#inject(ContextCarrier)}
 */
@Override
public void inject(ContextCarrier carrier) {
    AbstractSpan span = this.activeSpan();
    if (!span.isExit()) {
        throw new IllegalStateException("Inject can be done only in Exit Span");
    }
    WithPeerInfo spanWithPeer = (WithPeerInfo) span;
    String peer = spanWithPeer.getPeer();
    int peerId = spanWithPeer.getPeerId();
    carrier.setTraceSegmentId(this.segment.getTraceSegmentId());
    carrier.setSpanId(span.getSpanId());
    carrier.setParentApplicationInstanceId(segment.getApplicationInstanceId());
    if (DictionaryUtil.isNull(peerId)) {
        carrier.setPeerHost(peer);
    } else {
        carrier.setPeerId(peerId);
    }
    List<TraceSegmentRef> refs = this.segment.getRefs();
    int operationId;
    String operationName;
    int entryApplicationInstanceId;
    if (refs != null && refs.size() > 0) {
        TraceSegmentRef ref = refs.get(0);
        operationId = ref.getEntryOperationId();
        operationName = ref.getEntryOperationName();
        entryApplicationInstanceId = ref.getEntryApplicationInstanceId();
    } else {
        AbstractSpan firstSpan = first();
        operationId = firstSpan.getOperationId();
        operationName = firstSpan.getOperationName();
        entryApplicationInstanceId = this.segment.getApplicationInstanceId();
    }
    carrier.setEntryApplicationInstanceId(entryApplicationInstanceId);
    if (operationId == DictionaryUtil.nullValue()) {
        carrier.setEntryOperationName(operationName);
    } else {
        carrier.setEntryOperationId(operationId);
    }
    int parentOperationId = first().getOperationId();
    if (parentOperationId == DictionaryUtil.nullValue()) {
        carrier.setParentOperationName(first().getOperationName());
    } else {
        carrier.setParentOperationId(parentOperationId);
    }
    carrier.setDistributedTraceIds(this.segment.getRelatedGlobalTraces());
}