feature: Add snapshotting started message to ingestion process

[karolisg]

No description provided.

[coveralls]

Pull Request Test Coverage Report for Build 4606530520

• 38 of 50 (76.0%) changed or added relevant lines in 6 files are covered.
• 2115 unchanged lines in 39 files lost coverage.
• Overall coverage decreased (-1.9%) to 72.054%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
dozer-orchestrator/src/pipeline/connector_source.rs	1	2	50.0%
dozer-ingestion/src/connectors/object_store/tests/local_storage_tests.rs	9	20	45.0%

Files with Coverage Reduction	New Missed Lines	%
dozer-orchestrator/src/simple/orchestrator.rs	1	58.21%
dozer-api/src/generator/protoc/generator/implementation.rs	4	86.67%
dozer-api/src/rest/api_generator.rs	5	71.0%
dozer-cache/src/cache/index/mod.rs	5	94.05%
dozer-core/src/executor/source_node.rs	5	94.74%
dozer-ingestion/src/connectors/object_store/table_reader.rs	5	89.09%
dozer-core/src/epoch.rs	6	73.89%
dozer-orchestrator/src/pipeline/connector_source.rs	6	86.36%
dozer-sql/src/pipeline/expression/python_udf.rs	7	66.67%
dozer-api/src/cache_builder/mod.rs	8	59.09%

Totals
Change from base Build 4605596598:	-1.9%
Covered Lines:	33438
Relevant Lines:	46407

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💛 - Coveralls

[chubei]

@snork-alt Is this intended to be merged? There's still todo! in code.

[karolisg]

@snork-alt Is this intended to be merged? There's still todo! in code.

This PR is just for sending snapshotting started/done ingestion messages. I think logic of how it will be used should be implemented in a separate PR.

[chubei]

I was worried the todo! would abort the dozer process.

[karolisg]

I was worried the todo! would abort the dozer process.

Got it. Anyway, I have changed it to simple comment https://github.com/getdozer/dozer/pull/1377/files#diff-dfd9b1553d77e73ce70cadd635b4f5e6a925b5c246d31a740975ff2d3e27ad30R214-R215

[chubei]

Oh I was looking at a outdated version of the PR. Sorry.