Move plyvel to google provider extra

Plyvel does not build on macOS without levelDB installed in system.  Its better to make it an optional install.

CONTRIBUTING.rst

@@ -583,11 +583,11 @@ apache.sqoop, apache.webhdfs, asana, async, atlas, aws, azure, cassandra, celery
 cncf.kubernetes, crypto, dask, databricks, datadog, deprecated_api, devel, devel_all, devel_ci,
 devel_hadoop, dingding, discord, doc, docker, druid, elasticsearch, exasol, facebook, ftp, gcp,
 gcp_api, github_enterprise, google, google_auth, grpc, hashicorp, hdfs, hive, http, imap, jdbc,
-jenkins, jira, kerberos, kubernetes, ldap, microsoft.azure, microsoft.mssql, microsoft.winrm, mongo,
-mssql, mysql, neo4j, odbc, openfaas, opsgenie, oracle, pagerduty, papermill, password, pinot,
-plexus, postgres, presto, qds, qubole, rabbitmq, redis, s3, salesforce, samba, segment, sendgrid,
-sentry, sftp, singularity, slack, snowflake, spark, sqlite, ssh, statsd, tableau, telegram, trino,
-vertica, virtualenv, webhdfs, winrm, yandex, zendesk
+jenkins, jira, kerberos, kubernetes, ldap, leveldb, microsoft.azure, microsoft.mssql,
+microsoft.winrm, mongo, mssql, mysql, neo4j, odbc, openfaas, opsgenie, oracle, pagerduty, papermill,
+password, pinot, plexus, postgres, presto, qds, qubole, rabbitmq, redis, s3, salesforce, samba,
+segment, sendgrid, sentry, sftp, singularity, slack, snowflake, spark, sqlite, ssh, statsd, tableau,
+telegram, trino, vertica, virtualenv, webhdfs, winrm, yandex, zendesk
 
   .. END EXTRAS HERE
 

INSTALL

@@ -95,11 +95,11 @@ apache.sqoop, apache.webhdfs, asana, async, atlas, aws, azure, cassandra, celery
 cncf.kubernetes, crypto, dask, databricks, datadog, deprecated_api, devel, devel_all, devel_ci,
 devel_hadoop, dingding, discord, doc, docker, druid, elasticsearch, exasol, facebook, ftp, gcp,
 gcp_api, github_enterprise, google, google_auth, grpc, hashicorp, hdfs, hive, http, imap, jdbc,
-jenkins, jira, kerberos, kubernetes, ldap, microsoft.azure, microsoft.mssql, microsoft.winrm, mongo,
-mssql, mysql, neo4j, odbc, openfaas, opsgenie, oracle, pagerduty, papermill, password, pinot,
-plexus, postgres, presto, qds, qubole, rabbitmq, redis, s3, salesforce, samba, segment, sendgrid,
-sentry, sftp, singularity, slack, snowflake, spark, sqlite, ssh, statsd, tableau, telegram, trino,
-vertica, virtualenv, webhdfs, winrm, yandex, zendesk
+jenkins, jira, kerberos, kubernetes, ldap, leveldb, microsoft.azure, microsoft.mssql,
+microsoft.winrm, mongo, mssql, mysql, neo4j, odbc, openfaas, opsgenie, oracle, pagerduty, papermill,
+password, pinot, plexus, postgres, presto, qds, qubole, rabbitmq, redis, s3, salesforce, samba,
+segment, sendgrid, sentry, sftp, singularity, slack, snowflake, spark, sqlite, ssh, statsd, tableau,
+telegram, trino, vertica, virtualenv, webhdfs, winrm, yandex, zendesk
 
 # END EXTRAS HERE
 

airflow/providers/google/provider.yaml

@@ -748,3 +748,4 @@ extra-links:
 
 additional-extras:
   apache.beam: apache-beam[gcp]
+  leveldb: plyvel

docs/apache-airflow-providers-google/operators/leveldb/leveldb.rst

@@ -29,6 +29,11 @@ an ordered mapping from string keys to string values.
 
 .. _howto/operator:LevelDBOperator:
 
+.. note::
+
+    To use LevelDB hooks and operators you must requires installation of ``plyvel``.  It will be
+    installed if you specify the extra ``apached-airflow-providers-google[leveldb]``.
+
 Put key
 ^^^^^^^^^^^^^^^
 

docs/apache-airflow/extra-packages-ref.rst

@@ -60,6 +60,8 @@ python dependencies for the provided package.
 +---------------------+-----------------------------------------------------+----------------------------------------------------------------------------+
 | ldap                | ``pip install 'apache-airflow[ldap]'``              | LDAP authentication for users                                              |
 +---------------------+-----------------------------------------------------+----------------------------------------------------------------------------+
+| leveldb             | ``pip install 'apache-airflow[leveldb]'``           | Required for use leveldb extra in google provider                          |
++---------------------+-----------------------------------------------------+----------------------------------------------------------------------------+
 | password            | ``pip install 'apache-airflow[password]'``          | Password authentication for users                                          |
 +---------------------+-----------------------------------------------------+----------------------------------------------------------------------------+
 | rabbitmq            | ``pip install 'apache-airflow[rabbitmq]'``          | RabbitMQ support as a Celery backend                                       |

setup.py

@@ -326,7 +326,6 @@ def get_sphinx_theme_version() -> str:
     # pandas-gbq 0.15.0 release broke google provider's bigquery import
     # _check_google_client_version (airflow/providers/google/cloud/hooks/bigquery.py:49)
     'pandas-gbq<0.15.0',
-    'plyvel',
 ]
 grpc = [
     'google-auth>=1.0.0, <2.0.0dev',
@@ -381,6 +380,7 @@ def get_sphinx_theme_version() -> str:
     'ldap3>=2.5.1',
     'python-ldap',
 ]
+leveldb = ['plyvel']
 mongo = [
     'dnspython>=1.13.0,<2.0.0',
     'pymongo>=3.6.0',
@@ -636,6 +636,7 @@ def get_sphinx_theme_version() -> str:
     'google_auth': flask_oauth,
     'kerberos': kerberos,
     'ldap': ldap,
+    'leveldb': leveldb,
     'password': password,
     'rabbitmq': rabbitmq,
     'sentry': sentry,