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