ahmadtfarhan opened a new pull request, #46977:
URL: https://github.com/apache/airflow/pull/46977
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New Provider for Gremlin (Apache TinkerPop)
---
## Summary
This PR introduces a new provider for Gremlin—the graph traversal language
of [Apache TinkerPop](https://tinkerpop.apache.org/gremlin.html). The provider
is designed to facilitate connections to graph databases supporting Gremlin,
such as Azure Cosmos DB and Amazon Neptune.
## Background
Previously, I had developed a custom hook to query data from Azure Cosmos DB
using Apache Gremlin. In this PR, I’ve consolidated that functionality into a
full provider. While I managed to run it locally on the main branch, I
encountered the BaseHook issue
([#45233](https://github.com/apache/airflow/issues/45233)), so I performed all
testing on the v2-10-test branch.
## Changes
### Provider Implementation:
- The new GremlinHook establishes a connection using the Gremlin Python
Client.
- It constructs the connection URI based on the Airflow Connection’s
properties and extra parameters.
- The hook exposes a `run(query: str)` method that submits raw Gremlin query
strings and returns the results.
### Operator:
- The GremlinOperator instantiates the GremlinHook with a given connection
ID and query, then calls `run(query)` to execute the query.
### Testing:
- Unit tests have been added to validate the URI construction, client
instantiation, and query execution.
- Manual tests confirmed that raw queries using `Client.submit()`
successfully return results from Cosmos DB using Gremlin.
## Testing & Validation
- I ran unit tests on the v2-10-test branch after encountering BaseHook
issues on the main branch.
- The provider has been validated locally by submitting queries such as
g.V() and verifying that the expected results are returned from Azure Cosmos DB.
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