#!/usr/bin/env bash set -ue CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd) . "$CURDIR"/../shell_config.sh function check_log { ${CLICKHOUSE_CLIENT} --format=JSONEachRow -nq " system flush logs; -- Check the number of query spans with given trace id, to verify it was -- propagated. select count(*) "'"'"total spans"'"'", uniqExact(span_id) "'"'"unique spans"'"'", uniqExactIf(parent_span_id, parent_span_id != 0) "'"'"unique non-zero parent spans"'"'" from system.opentelemetry_span_log where trace_id = reinterpretAsUUID(reverse(unhex('$trace_id'))) and operation_name = 'query' ; -- Also check that the initial query span in ClickHouse has proper parent span. select count(*) "'"'"initial query spans with proper parent"'"'" from (select *, attribute_name, attribute_value from system.opentelemetry_span_log array join attribute.names as attribute_name, attribute.values as attribute_value) o join system.query_log on query_id = o.attribute_value where trace_id = reinterpretAsUUID(reverse(unhex('$trace_id'))) and operation_name = 'query' and parent_span_id = reinterpretAsUInt64(unhex('73')) and o.attribute_name = 'clickhouse.query_id' and is_initial_query and type = 'QueryFinish' ; -- Check that the tracestate header was propagated. It must have exactly the -- same non-empty value for all 'query' spans in this trace. select uniqExact(value) "'"'"unique non-empty tracestate values"'"'" from system.opentelemetry_span_log array join attribute.names as name, attribute.values as value where trace_id = reinterpretAsUUID(reverse(unhex('$trace_id'))) and operation_name = 'query' and name = 'clickhouse.tracestate' and length(value) > 0 ; " } # Generate some random trace id so that the prevous runs of the test do not interfere. echo "===http===" trace_id=$(${CLICKHOUSE_CLIENT} -q "select lower(hex(reverse(reinterpretAsString(generateUUIDv4()))))") # Check that the HTTP traceparent is read, and then passed through `remote` # table function. We expect 4 queries -- one initial, one SELECT and two # DESC TABLE. Two DESC TABLE instead of one looks like a bug, see the issue: # https://github.com/ClickHouse/ClickHouse/issues/14228 ${CLICKHOUSE_CURL} \ --header "traceparent: 00-$trace_id-0000000000000073-01" \ --header "tracestate: some custom state" "http://localhost:8123/" \ --get \ --data-urlencode "query=select 1 from remote('127.0.0.2', system, one) format Null" check_log # With another trace id, check that clickhouse-client accepts traceparent, and # that it is passed through URL table function. We expect two query spans, one # for the initial query, and one for the HTTP query. echo "===native===" trace_id=$(${CLICKHOUSE_CLIENT} -q "select lower(hex(reverse(reinterpretAsString(generateUUIDv4()))))") ${CLICKHOUSE_CLIENT} \ --opentelemetry-traceparent "00-$trace_id-0000000000000073-01" \ --opentelemetry-tracestate "another custom state" \ --query "select * from url('http://127.0.0.2:8123/?query=select%201%20format%20Null', CSV, 'a int')" check_log # Test sampled tracing. The traces should be started with the specified # probability, only for initial queries. echo "===sampled===" query_id=$(${CLICKHOUSE_CLIENT} -q "select lower(hex(reverse(reinterpretAsString(generateUUIDv4()))))") for i in {1..200} do ${CLICKHOUSE_CLIENT} \ --opentelemetry_start_trace_probability=0.1 \ --query_id "$query_id-$i" \ --query "select 1 from remote('127.0.0.2', system, one) format Null" \ & # clickhouse-client is slow to start (initialization of DateLUT), so run # several clients in parallel, but not too many. if [[ $((i % 10)) -eq 0 ]] then wait fi done wait ${CLICKHOUSE_CLIENT} -q "system flush logs" ${CLICKHOUSE_CLIENT} -q " with count(*) as c -- expect 200 * 0.1 = 20 sampled events on average select if(c > 1 and c < 50, 'OK', 'fail: ' || toString(c)) from system.opentelemetry_span_log array join attribute.names as name, attribute.values as value where name = 'clickhouse.query_id' and operation_name = 'query' and parent_span_id = 0 -- only account for the initial queries and value like '$query_id-%' ; "