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MilanGarnierclaude
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test: add phpt tests for DD_TRACE_PROPAGATION_BEHAVIOR_EXTRACT
Covers the three behaviors (continue, restart, ignore) and config parsing (case-insensitive values, invalid value falls back to default). Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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‎tests/ext/distributed_tracing/propagation_behavior_extract_config.phpt‎

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--TEST--
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DD_TRACE_PROPAGATION_BEHAVIOR_EXTRACT config parsing: case-insensitive, invalid falls back to continue
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--ENV--
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DD_TRACE_GENERATE_ROOT_SPAN=0
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--FILE--
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<?php
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// Helper: return trace_id after consuming upstream context with a given config value
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function check_behavior(string $config_value): string {
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ini_set('datadog.trace.propagation_behavior_extract', $config_value);
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DDTrace\consume_distributed_tracing_headers([
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"x-datadog-trace-id" => 42,
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"x-datadog-parent-id" => 10,
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]);
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$span = DDTrace\start_span();
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$result = DDTrace\root_span()->traceId === "0000000000000000000000000000002a" ? "continue" : "restart_or_ignore";
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DDTrace\close_span();
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return $result;
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}
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// Lowercase values
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echo "continue: " . check_behavior("continue") . "\n";
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echo "restart: " . check_behavior("restart") . "\n";
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echo "ignore: " . check_behavior("ignore") . "\n";
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// Case-insensitive
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echo "CONTINUE: " . check_behavior("CONTINUE") . "\n";
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echo "RESTART: " . check_behavior("RESTART") . "\n";
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echo "Ignore: " . check_behavior("Ignore") . "\n";
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// Invalid value falls back to default (continue)
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echo "invalid: " . check_behavior("invalid_value") . "\n";
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?>
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--EXPECT--
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continue: continue
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restart: restart_or_ignore
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ignore: restart_or_ignore
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CONTINUE: continue
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RESTART: restart_or_ignore
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Ignore: restart_or_ignore
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invalid: continue

‎tests/ext/distributed_tracing/propagation_behavior_extract_continue.phpt‎

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--TEST--
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DD_TRACE_PROPAGATION_BEHAVIOR_EXTRACT=continue inherits upstream context
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--ENV--
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DD_TRACE_GENERATE_ROOT_SPAN=0
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DD_TRACE_PROPAGATION_BEHAVIOR_EXTRACT=continue
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--FILE--
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<?php
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DDTrace\consume_distributed_tracing_headers([
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"x-datadog-trace-id" => 42,
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"x-datadog-parent-id" => 10,
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"x-datadog-sampling-priority" => 1,
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"baggage" => "user.id=123",
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]);
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$span = DDTrace\start_span();
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$root = DDTrace\root_span();
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echo "trace_id: " . $root->traceId . "\n";
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echo "parent_id: " . $root->parentId . "\n";
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echo "links_count: " . count($root->links) . "\n";
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$headers = DDTrace\generate_distributed_tracing_headers(['baggage']);
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echo "baggage: " . ($headers['baggage'] ?? 'none') . "\n";
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DDTrace\close_span();
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?>
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--EXPECT--
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trace_id: 0000000000000000000000000000002a
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parent_id: 10
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links_count: 0
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baggage: user.id=123

‎tests/ext/distributed_tracing/propagation_behavior_extract_ignore.phpt‎

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--TEST--
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DD_TRACE_PROPAGATION_BEHAVIOR_EXTRACT=ignore drops all incoming context including baggage
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--ENV--
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DD_TRACE_GENERATE_ROOT_SPAN=0
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DD_TRACE_PROPAGATION_BEHAVIOR_EXTRACT=ignore
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--FILE--
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<?php
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DDTrace\consume_distributed_tracing_headers([
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"x-datadog-trace-id" => 42,
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"x-datadog-parent-id" => 10,
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"x-datadog-sampling-priority" => 2,
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"x-datadog-tags" => "_dd.p.dm=-4",
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"baggage" => "user.id=123",
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]);
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$span = DDTrace\start_span();
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$root = DDTrace\root_span();
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// fresh trace: not from upstream
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echo "same_as_upstream: " . ($root->traceId === "0000000000000000000000000000002a" ? "yes" : "no") . "\n";
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echo "parent_id: " . $root->parentId . "\n";
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// no span link (context discarded entirely)
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echo "links_count: " . count($root->links) . "\n";
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// baggage dropped
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$headers = DDTrace\generate_distributed_tracing_headers(['baggage']);
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echo "baggage: " . ($headers['baggage'] ?? 'none') . "\n";
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// upstream sampling priority not carried over
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$dd_headers = DDTrace\generate_distributed_tracing_headers(['datadog']);
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echo "sampling_priority: " . ($dd_headers['x-datadog-sampling-priority'] ?? 'none') . "\n";
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DDTrace\close_span();
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?>
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--EXPECT--
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same_as_upstream: no
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parent_id: 0
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links_count: 0
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baggage: none
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sampling_priority: none

‎tests/ext/distributed_tracing/propagation_behavior_extract_restart.phpt‎

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--TEST--
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DD_TRACE_PROPAGATION_BEHAVIOR_EXTRACT=restart starts fresh trace with span link
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--ENV--
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DD_TRACE_GENERATE_ROOT_SPAN=0
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DD_TRACE_PROPAGATION_BEHAVIOR_EXTRACT=restart
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DD_TRACE_128_BIT_TRACEID_GENERATION_ENABLED=0
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DD_TRACE_DEBUG_PRNG_SEED=42
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--FILE--
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<?php
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DDTrace\consume_distributed_tracing_headers([
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"x-datadog-trace-id" => 42,
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"x-datadog-parent-id" => 10,
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"x-datadog-sampling-priority" => 1,
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"x-datadog-tags" => "_dd.p.foo=bar",
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"baggage" => "user.id=123",
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]);
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$span = DDTrace\start_span();
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$root = DDTrace\root_span();
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// fresh trace: different from upstream trace_id 42
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echo "same_as_upstream: " . ($root->traceId === "0000000000000000000000000000002a" ? "yes" : "no") . "\n";
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// span link attached to root span
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echo "links_count: " . count($root->links) . "\n";
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$link = $root->links[0] ?? null;
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if ($link !== null) {
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// link captures upstream trace/span ids
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echo "link_trace_id: " . $link->traceId . "\n";
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echo "link_span_id: " . $link->spanId . "\n";
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echo "link_reason: " . ($link->attributes['reason'] ?? 'missing') . "\n";
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// _dd.p.foo not included (was in upstream _dd.p.* tags, now dropped)
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echo "link_has_foo: " . (isset($link->attributes['_dd.p.foo']) ? "yes" : "no") . "\n";
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}
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// baggage preserved
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$headers = DDTrace\generate_distributed_tracing_headers(['baggage']);
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echo "baggage: " . ($headers['baggage'] ?? 'none') . "\n";
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// upstream _dd.p.foo not in outbound tags
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$dd_headers = DDTrace\generate_distributed_tracing_headers(['datadog']);
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$tags = $dd_headers['x-datadog-tags'] ?? '';
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echo "foo_in_tags: " . (str_contains($tags, '_dd.p.foo') ? "yes" : "no") . "\n";
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DDTrace\close_span();
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?>
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--EXPECT--
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same_as_upstream: no
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links_count: 1
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link_trace_id: 0000000000000000000000000000002a
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link_span_id: 000000000000000a
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link_reason: propagation_behavior_extract
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link_has_foo: no
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baggage: user.id=123
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foo_in_tags: no

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