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Add client_info to BigQuery constructor for user-amenable user agent headers #7806

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merged 2 commits into from
Apr 30, 2019

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@tswast tswast commented Apr 25, 2019

This aligns BigQuery's behavior regarding the User-Agent and
X-Goog-Api-Client headers with that of the GAPIC-based clients.

Old:

X-Goog-API-Client: gl-python/3.7.2 gccl/1.11.2
User-Agent: gcloud-python/0.29.1

New:

X-Goog-API-Client: optional-application-id/1.2.3 gl-python/3.7.2 grpc/1.20.0 gax/1.9.0 gapic/1.11.2 gccl/1.11.2
User-Agent: optional-application-id/1.2.3 gl-python/3.7.2 grpc/1.20.0 gax/1.9.0 gapic/1.11.2 gccl/1.11.2

In order to set the optional-application-id/1.2.3, the latest version
of api_core is required, but since that's an uncommon usecase and it
doesn't break, just ignore the custom User-Agent if an older version is
used, I didn't update the minimum version setup.py.

This PR depends on:

@googlebot googlebot added the cla: yes This human has signed the Contributor License Agreement. label Apr 25, 2019
@tswast tswast added the api: bigquery Issues related to the BigQuery API. label Apr 25, 2019
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Seems reasonable for the BQ changes. There will be a followup change for exposing client_info to the other BQ APIs like dts and storage?

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tswast commented Apr 25, 2019

followup change for exposing client_info to the other BQ APIs like dts and storage?

Already present on those, which was a major factor in going with this design.

Once #7799 goes in, we'll be able to set client_info.user_agent = "my-application/1.2.3" on all GAPIC clients.

At some point, I do intend to update the BQ magics to set this user agent field, as they create their own clients, and I figure we can track that as using BQ from Jupyter.

_http=http,
)

table = client.get_table(self.TABLE_REF)
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Lint failure here: the table variable is never used. You can just invoke client.get_table without binding the return value, or use _.

tswast added 2 commits April 29, 2019 13:45
…headers

This aligns BigQuery's behavior regarding the User-Agent and
X-Goog-Api-Client headers with that of the GAPIC-based clients.

Old:

    X-Goog-API-Client: gl-python/3.7.2 gccl/1.11.2
    User-Agent: gcloud-python/0.29.1

New:

    X-Goog-API-Client: optional-application-id/1.2.3 gl-python/3.7.2 grpc/1.20.0 gax/1.9.0 gapic/1.11.2 gccl/1.11.2
    User-Agent: optional-application-id/1.2.3 gl-python/3.7.2 grpc/1.20.0 gax/1.9.0 gapic/1.11.2 gccl/1.11.2

In order to set the `optional-application-id/1.2.3`, the latest version
of `api_core` is required, but since that's an uncommon usecase and it
doesn't break, just ignore the custom User-Agent if an older version is
used, I didn't update the minimum version `setup.py`.
@tswast tswast force-pushed the b116069533-bq-client-info branch from d0110ea to ec4a491 Compare April 29, 2019 20:48
@tswast tswast marked this pull request as ready for review April 29, 2019 20:48
@tswast tswast requested a review from a team April 29, 2019 20:48
@tswast tswast merged commit 0a55c26 into googleapis:master Apr 30, 2019
@tswast tswast deleted the b116069533-bq-client-info branch April 30, 2019 18:36
class Connection(_http.JSONConnection):
"""A connection to Google BigQuery via the JSON REST API.

:type client: :class:`~google.cloud.bigquery.client.Client`
:param client: The client that owns the current connection.
"""

def __init__(self, client, client_info=None):
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@tswast Need to document the client_info parameter in the class docstring.

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We should probably hoist this machinery into the google.cloud._http.JSONConnection base class.


@USER_AGENT.setter
def USER_AGENT(self, value):
self._client_info.user_agent = value
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These aren't constants, so why uppercase?

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For backwards compatibility.

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There's a USER_AGENT on the superclass, which we want to override the behavior of.

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4 participants