zipkin.storage.cassandra.InsertTraceIdBySpanName.java Source code

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Here is the source code for zipkin.storage.cassandra.InsertTraceIdBySpanName.java

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/**
 * Copyright 2015-2016 The OpenZipkin Authors
 *
 * 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 zipkin.storage.cassandra;

import com.datastax.driver.core.BoundStatement;
import com.datastax.driver.core.querybuilder.Insert;
import com.datastax.driver.core.querybuilder.QueryBuilder;
import com.google.common.collect.ImmutableSet;
import java.util.Collections;
import java.util.Set;
import zipkin.Span;

// QueryRequest.spanName
final class InsertTraceIdBySpanName implements Indexer.IndexSupport {

    @Override
    public String table() {
        return Tables.SERVICE_SPAN_NAME_INDEX;
    }

    @Override
    public Insert declarePartitionKey(Insert insert) {
        return insert.value("service_span_name", QueryBuilder.bindMarker("service_span_name"));
    }

    @Override
    public BoundStatement bindPartitionKey(BoundStatement bound, String partitionKey) {
        return bound.setString("service_span_name", partitionKey);
    }

    @Override
    public Set<String> partitionKeys(Span span) {
        if (span.name.isEmpty())
            return Collections.emptySet();

        ImmutableSet.Builder<String> result = ImmutableSet.builder();
        for (String serviceName : span.serviceNames()) {
            result.add(serviceName + "." + span.name);
        }
        return result.build();
    }
}