Support v1 trace format from libraries

[cbeauchesne]

Motivation

dd-trace-go uses by default v1 format

Changes

wrapper traces and spans into a class that hides the differences between those two formats

Workflow

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2. Work on you PR until the CI passes
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   • Test logic is modified? -> Get a review from RFC owner.
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Reviewer checklist

• Anything but tests/ or manifests/ is modified ? I have the approval from R&P team
• A docker base image is modified?
  • the relevant build-XXX-image label is present
• A scenario is added, removed or renamed?
  • Get a review from R&P team

[github-actions]

CODEOWNERS have been resolved as:

utils/dd_types/__init__.py                                              @DataDog/system-tests-core
utils/dd_types/_datadog_trace.py                                        @DataDog/system-tests-core
manifests/agent.yml                                                     @DataDog/system-tests-core
manifests/golang.yml                                                    @DataDog/dd-trace-go-guild
tests/ai_guard/test_ai_guard_sdk.py                                     @DataDog/k9-ai-guard @DataDog/system-tests-core
tests/appsec/rasp/test_api10.py                                         @DataDog/asm-libraries @DataDog/system-tests-core
tests/appsec/test_asm_standalone.py                                     @DataDog/asm-libraries @DataDog/system-tests-core
tests/appsec/test_automated_login_events.py                             @DataDog/asm-libraries @DataDog/system-tests-core
tests/appsec/test_automated_payment_events.py                           @DataDog/asm-libraries @DataDog/system-tests-core
tests/appsec/test_blocking_addresses.py                                 @DataDog/asm-libraries @DataDog/system-tests-core
tests/appsec/test_client_ip.py                                          @DataDog/asm-libraries @DataDog/system-tests-core
tests/appsec/test_conf.py                                               @DataDog/asm-libraries @DataDog/system-tests-core
tests/appsec/test_event_tracking.py                                     @DataDog/asm-libraries @DataDog/system-tests-core
tests/appsec/test_event_tracking_v2.py                                  @DataDog/asm-libraries @DataDog/system-tests-core
tests/appsec/test_identify.py                                           @DataDog/asm-libraries @DataDog/system-tests-core
tests/appsec/test_inferred_spans.py                                     @DataDog/asm-libraries @DataDog/system-tests-core
tests/appsec/test_remote_config_rule_changes.py                         @DataDog/asm-libraries @DataDog/system-tests-core
tests/appsec/test_reports.py                                            @DataDog/asm-libraries @DataDog/system-tests-core
tests/appsec/test_shell_execution.py                                    @DataDog/asm-libraries @DataDog/system-tests-core
tests/appsec/test_span_tags_headers.py                                  @DataDog/asm-libraries @DataDog/system-tests-core
tests/appsec/test_trace_tagging.py                                      @DataDog/asm-libraries @DataDog/system-tests-core
tests/appsec/test_traces.py                                             @DataDog/asm-libraries @DataDog/system-tests-core
tests/appsec/test_user_blocking_full_denylist.py                        @DataDog/asm-libraries @DataDog/system-tests-core
tests/appsec/waf/test_addresses.py                                      @DataDog/asm-libraries @DataDog/system-tests-core
tests/appsec/waf/test_blocking.py                                       @DataDog/asm-libraries @DataDog/system-tests-core
tests/appsec/waf/test_blocking_security_response_id.py                  @DataDog/asm-libraries @DataDog/system-tests-core
tests/appsec/waf/test_reports.py                                        @DataDog/asm-libraries @DataDog/system-tests-core
tests/integrations/crossed_integrations/test_kafka.py                   @DataDog/system-tests-core
tests/integrations/crossed_integrations/test_kinesis.py                 @DataDog/system-tests-core
tests/integrations/crossed_integrations/test_rabbitmq.py                @DataDog/system-tests-core
tests/integrations/crossed_integrations/test_sns_to_sqs.py              @DataDog/system-tests-core
tests/integrations/crossed_integrations/test_sqs.py                     @DataDog/system-tests-core
tests/integrations/test_dbm.py                                          @DataDog/system-tests-core
tests/integrations/test_inferred_proxy.py                               @DataDog/system-tests-core
tests/serverless/span_pointers/utils.py                                 @DataDog/serverless @DataDog/system-tests-core
tests/test_data_integrity.py                                            @DataDog/system-tests-core
tests/test_distributed.py                                               @DataDog/system-tests-core
tests/test_graphql.py                                                   @DataDog/system-tests-core
tests/test_identify.py                                                  @DataDog/system-tests-core
tests/test_protobuf.py                                                  @DataDog/system-tests-core
tests/test_sampling_rates.py                                            @DataDog/system-tests-core
tests/test_scrubbing.py                                                 @DataDog/system-tests-core
tests/test_semantic_conventions.py                                      @DataDog/system-tests-core
tests/test_the_test/test_deserializer.py                                @DataDog/system-tests-core
tests/test_v1_payloads.py                                               @DataDog/system-tests-core
utils/_context/_scenarios/endtoend.py                                   @DataDog/system-tests-core
utils/interfaces/_library/appsec.py                                     @DataDog/system-tests-core
utils/interfaces/_library/core.py                                       @DataDog/system-tests-core
utils/proxy/traces/trace_v1.py                                          @DataDog/system-tests-core
utils/tools.py                                                          @DataDog/system-tests-core

[datadog-official]

✅ Tests

🎉 All green!

❄️ No new flaky tests detected
🧪 All tests passed

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[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Respect default when v1 span metadata is missing

DataDogSpanV1.get() returns self.raw_span["attributes"] for meta/meta_struct/metrics without honoring the caller-provided default. If a v1 span omits the attributes field (valid for spans with no tags/metrics), calls like span.get("meta", {}) now raise KeyError instead of returning {}, which can break request matching and AppSec/span validators that rely on safe .get(...) access patterns.

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