Examples with DependencyLink zipkin.DependencyLink used on opensource projects

Example 1 with DependencyLink

use of zipkin.DependencyLink in project zipkin by openzipkin.

the class DependencyLinker method merge.

/** links are merged by mapping to parent/child and summing corresponding links */
public static List<DependencyLink> merge(Iterable<DependencyLink> in) {
    Map<Pair<String>, Long> links = new LinkedHashMap<>();
    for (DependencyLink link : in) {
        Pair<String> parentChild = Pair.create(link.parent, link.child);
        long callCount = links.containsKey(parentChild) ? links.get(parentChild) : 0L;
        callCount += link.callCount;
        links.put(parentChild, callCount);
    }
    List<DependencyLink> result = new ArrayList<>(links.size());
    for (Map.Entry<Pair<String>, Long> link : links.entrySet()) {
        result.add(DependencyLink.create(link.getKey()._1, link.getKey()._2, link.getValue()));
    }
    return result;
}

Example 2 with DependencyLink

use of zipkin.DependencyLink in project zipkin by openzipkin.

the class CassandraDependenciesTest method processDependencies.

/**
   * The current implementation does not include dependency aggregation. It includes retrieval of
   * pre-aggregated links.
   *
   * <p>This uses {@link InMemorySpanStore} to prepare links and {@link CassandraDependenciesWriter}
   * to store them.
   *
   * <p>Note: The zipkin-dependencies-spark doesn't use any of these classes: it reads and writes to
   * the keyspace directly.
   */
@Override
public void processDependencies(List<Span> spans) {
    InMemoryStorage mem = new InMemoryStorage();
    mem.spanConsumer().accept(spans);
    List<DependencyLink> links = mem.spanStore().getDependencies(TODAY + DAY, null);
    // This gets or derives a timestamp from the spans
    long midnight = midnightUTC(MergeById.apply(spans).get(0).timestamp / 1000);
    new CassandraDependenciesWriter(storage.session.get()).write(links, midnight);
}

Example 3 with DependencyLink

use of zipkin.DependencyLink in project zipkin by openzipkin.

the class MySQLSpanStore method getDependencies.

@Override
public List<DependencyLink> getDependencies(long endTs, @Nullable Long lookback) {
    try (Connection conn = datasource.getConnection()) {
        if (schema.hasPreAggregatedDependencies) {
            List<Date> days = getDays(endTs, lookback);
            List<DependencyLink> unmerged = context.get(conn).selectFrom(ZIPKIN_DEPENDENCIES).where(ZIPKIN_DEPENDENCIES.DAY.in(days)).fetch((Record l) -> DependencyLink.create(l.get(ZIPKIN_DEPENDENCIES.PARENT), l.get(ZIPKIN_DEPENDENCIES.CHILD), l.get(ZIPKIN_DEPENDENCIES.CALL_COUNT)));
            return DependencyLinker.merge(unmerged);
        } else {
            return aggregateDependencies(endTs, lookback, conn);
        }
    } catch (SQLException e) {
        throw new RuntimeException("Error querying dependencies for endTs " + endTs + " and lookback " + lookback + ": " + e.getMessage());
    }
}

Example 4 with DependencyLink

use of zipkin.DependencyLink in project zipkin by openzipkin.

the class JsonAdaptersTest method dependencyLinkRoundTrip.

@Test
public void dependencyLinkRoundTrip() throws IOException {
    DependencyLink link = DependencyLink.create("foo", "bar", 2);
    Buffer bytes = new Buffer();
    bytes.write(Codec.JSON.writeDependencyLink(link));
    assertThat(JsonAdapters.DEPENDENCY_LINK_ADAPTER.fromJson(bytes)).isEqualTo(link);
}

Example 5 with DependencyLink

use of zipkin.DependencyLink in project zipkin by openzipkin.

the class ElasticsearchHttpDependenciesTest method processDependencies.

/**
   * The current implementation does not include dependency aggregation. It includes retrieval of
   * pre-aggregated links.
   */
@Override
public void processDependencies(List<Span> spans) {
    InMemoryStorage mem = new InMemoryStorage();
    mem.spanConsumer().accept(spans);
    List<DependencyLink> links = mem.spanStore().getDependencies(TODAY + DAY, null);
    // This gets or derives a timestamp from the spans
    long midnightUTC = midnightUTC(guessTimestamp(MergeById.apply(spans).get(0)) / 1000);
    InternalForTests.writeDependencyLinks(storage(), links, midnightUTC);
}