feat(elt-common): Pipeline testing harness - #464
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ref #443 Planned test harness will directly call run_ingest, so we need to move this out of cli to ensure parity. I believe all uses of requests happen as part of run_ingest, so this doesn't effect behaviour.
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Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review. 📝 WalkthroughWalkthroughThe PR moves IPv6 configuration into ingest execution, exposes ingest manifest creation, adds caller-managed SQL catalog work directories, and introduces reusable pipeline fixtures, documentation, and end-to-end tests. ChangesPipeline testing and ingest runtime
Priority: ➖ Normal — Impact reflects medium issue severity. Severity of issue fixed: Medium Merge Risk: ⚪ Minimal · up to This change adds pipeline end-to-end testing fixtures, catalog assertions, and test documentation. No concrete merge-blocking production or runtime risk is currently established. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
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In `@elt-common/src/elt_common/ingest.py`:
- Line 33: Remove the module-level mutation of urllib3’s shared HAS_IPV6 setting
in elt_common.ingest, and scope IPv4-only behavior to the ingest client through
an ingest-specific transport or equivalent isolated client configuration. Ensure
unrelated requests clients retain normal IPv6 resolution while ingest requests
preserve their intended connectivity behavior.
In `@elt-common/src/elt_common/testing/pipelines.py`:
- Around line 102-104: Update the fixture teardown around AssertableCatalog and
catalog.close() to invoke clean_catalog() before closing the catalog, ensuring
cleanup also occurs after failed assertions and across session-scoped fixture
reuse.
- Line 97: Update the PyIceberg warehouse environment setup in the test fixture
to use warehouse.warehouse_path instead of test_warehouse_name, ensuring ingest
data is written to the temporary warehouse location used by
SqlCatalogWarehouse.connect().
In `@elt-pipelines/README.md`:
- Around line 101-103: Update the test instructions near the pytest command to
document the database environment variables required by test_proposal and where
to obtain their values, or provide the supported pytest option for excluding
that test when no database is available.
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elt-common/src/elt_common/cli.pyelt-common/src/elt_common/ingest.pyelt-common/src/elt_common/pipeline.pyelt-common/src/elt_common/testing/fixtures.pyelt-common/src/elt_common/testing/pipelines.pyelt-common/src/elt_common/testing/sqlcatalog.pyelt-pipelines/README.mdelt-pipelines/facility_ops/ingest/accelerator/statusdisplay/test_statusdisplay.pyelt-pipelines/fase/ingest/fase/proposal/test_proposal.pyelt-pipelines/pyproject.toml
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martyngigg
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I like the general structure here. It pulls away the messy details of setting up a test catalog and leaves the tests to validate the things important to that pipeline.
I'm personally happy with the slightly rigid requirement that the test file be next to the extraction file along with the standard directory structure. The aim is to make the pipelines as standardised as possible so I think this is a strength.
| Both rely on the test file being named 'test_<job>.py' and existing in the same | ||
| directory as the pipeline it tests, in the elt-common directory structure: | ||
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| <warehouse_name>/ |
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I'm happy with this as a standard as I think it's simple follows the pre-existing structures.
| from minio import Minio | ||
| import pytest | ||
| import tenacity | ||
| from minio import Minio |
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This isn't necessary as part of these changes but I was thinking we could swap out the minio library for boto3 (it's used by pyarrow/s3fs anyway) and then we can drop any minio references.
We also use boto3 elsewhere in the iceberg bootstrap script so it would harmonise across the codebase too.
Some time ago I had slightly wondered whether the bootstrap script referenced above should be rewritten to use facilities in this library as it feels like there is a lot of duplication but that's a discussion for another day I think.
ref #464 (comment) Will likely be expanded over time, but this kind of pattern seems like a good place to start
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ref #443
Adds test fixtures for running e2e tests on
elt-pipelines. This is very much not complete but is at the stage that I think it's useful to include, and could do with a) checking that this structure is reasonable (it does involve a bit of 'magic' based on the pipeline directories), and b) discussion on how to move forward with it.test_statusdisplayandtest_proposalshow the kind of code the fixtures let us write. The tests can be invoked as specified in the README - environment variables for the DB config need to be set fortest_proposal.Things which need further work:
AssertableCatalog. The current methods are examples of the kinds of things we could do:assert_...etc. methods are useful, but narrow and would probably proliferate quite a lot over timedo_somethingis kind of the opposite, allowing callers to do basically whatever they want, but it's a bit clunky to use, and not reusable, so I'm not a big fanfixtures.pywhen finalizing Replace dlt framework and overhaul ingestion code #321 so that the awkward plugin arguments aren't necessaryPossibly makingdone in 0e922f6clean_catalogautomatic/available as a context manager; it'll be very easy to forget to use atm