Environment Variables
A number of environment variables can be used to configure the behavior of the library. There are also functions to configure this behavior in code. The environment variables are convenient when troubleshooting problems.
Endpoint Overrides
GOOGLE_CLOUD_CPP_SQL_AVAILABLE_DATABASE_VERSIONS_SERVICE_ENDPOINT=...
overrides theEndpointOption
(which defaults to "sqladmin.googleapis.com") used byMakeSqlAvailableDatabaseVersionsServiceConnection()
.GOOGLE_CLOUD_CPP_SQL_BACKUP_RUNS_SERVICE_ENDPOINT=...
overrides theEndpointOption
(which defaults to "sqladmin.googleapis.com") used byMakeSqlBackupRunsServiceConnection()
.GOOGLE_CLOUD_CPP_SQL_CONNECT_SERVICE_ENDPOINT=...
overrides theEndpointOption
(which defaults to "sqladmin.googleapis.com") used byMakeSqlConnectServiceConnection()
.GOOGLE_CLOUD_CPP_SQL_DATABASES_SERVICE_ENDPOINT=...
overrides theEndpointOption
(which defaults to "sqladmin.googleapis.com") used byMakeSqlDatabasesServiceConnection()
.GOOGLE_CLOUD_CPP_SQL_EVENTS_SERVICE_ENDPOINT=...
overrides theEndpointOption
(which defaults to "sqladmin.googleapis.com") used byMakeSqlEventsServiceConnection()
.GOOGLE_CLOUD_CPP_SQL_FLAGS_SERVICE_ENDPOINT=...
overrides theEndpointOption
(which defaults to "sqladmin.googleapis.com") used byMakeSqlFlagsServiceConnection()
.GOOGLE_CLOUD_CPP_SQL_IAM_POLICIES_SERVICE_ENDPOINT=...
overrides theEndpointOption
(which defaults to "sqladmin.googleapis.com") used byMakeSqlIamPoliciesServiceConnection()
.GOOGLE_CLOUD_CPP_SQL_INSTANCES_SERVICE_ENDPOINT=...
overrides theEndpointOption
(which defaults to "sqladmin.googleapis.com") used byMakeSqlInstancesServiceConnection()
.GOOGLE_CLOUD_CPP_SQL_INSTANCE_NAMES_SERVICE_ENDPOINT=...
overrides theEndpointOption
(which defaults to "sqladmin.googleapis.com") used byMakeSqlInstanceNamesServiceConnection()
.GOOGLE_CLOUD_CPP_SQL_OPERATIONS_SERVICE_ENDPOINT=...
overrides theEndpointOption
(which defaults to "sqladmin.googleapis.com") used byMakeSqlOperationsServiceConnection()
.GOOGLE_CLOUD_CPP_SQL_REGIONS_SERVICE_ENDPOINT=...
overrides theEndpointOption
(which defaults to "sqladmin.googleapis.com") used byMakeSqlRegionsServiceConnection()
.GOOGLE_CLOUD_CPP_SQL_SSL_CERTS_SERVICE_ENDPOINT=...
overrides theEndpointOption
(which defaults to "sqladmin.googleapis.com") used byMakeSqlSslCertsServiceConnection()
.GOOGLE_CLOUD_CPP_SQL_TIERS_SERVICE_ENDPOINT=...
overrides theEndpointOption
(which defaults to "sqladmin.googleapis.com") used byMakeSqlTiersServiceConnection()
.GOOGLE_CLOUD_CPP_SQL_USERS_SERVICE_ENDPOINT=...
overrides theEndpointOption
(which defaults to "sqladmin.googleapis.com") used byMakeSqlUsersServiceConnection()
.
See Also
Logging
GOOGLE_CLOUD_CPP_ENABLE_TRACING=rpc
: turns on tracing for most gRPC calls. The library injects an additional Stub decorator that prints each gRPC request and response. Unless you have configured your own logging backend, you should also set GOOGLE_CLOUD_CPP_ENABLE_CLOG
to produce any output on the program's console.
See Also
google::cloud::LoggingComponentsOption
GOOGLE_CLOUD_CPP_TRACING_OPTIONS=...
: modifies the behavior of gRPC tracing, including whether messages will be output on multiple lines, or whether string/bytes fields will be truncated.
See Also
google::cloud::GrpcTracingOptionsOption
GOOGLE_CLOUD_CPP_ENABLE_CLOG=yes
: turns on logging in the library, basically the library always "logs" but the logging infrastructure has no backend to actually print anything until the application sets a backend or they set this environment variable.
See Also
See Also
Setting the Default Project
GOOGLE_CLOUD_PROJECT=...
: is used in examples and integration tests to configure the GCP project. This has no effect in the library.