Provided by: sqitch_1.3.0-1_all 
Name
App::Sqitch::Engine::snowflake - Sqitch Snowflake Engine
Synopsis
my $snowflake = App::Sqitch::Engine->load( engine => 'snowflake' );
Description
App::Sqitch::Engine::snowflake provides the Snowflake storage engine for Sqitch.
Interface
Attributes
"uri"
Returns the Snowflake database URI name. It starts with the URI for the target and builds
out missing parts. Sqitch looks for the host name in this order:
1. In the host name of the target URI. If that host name does not end in
"snowflakecomputing.com", Sqitch appends it. This lets Snowflake URLs just reference
the Snowflake account name or the account name and region in URLs.
2. In the $SNOWSQL_HOST environment variable (Deprecated by Snowflake).
3. By concatenating the account name and region, if available, from the $SNOWSQL_ACCOUNT
environment variable or "connections.accountname" setting in the SnowSQL configuration
file <https://docs.snowflake.com/en/user-guide/snowsql-start.html#configuring-default-
connection-settings>, the $SNOWSQL_REGION or "connections.region" setting in the
SnowSQL configuration file <https://docs.snowflake.com/en/user-guide/snowsql-
start.html#configuring-default-connection-settings>, and "snowflakecomputing.com".
Note that Snowflake has deprecated $SNOWSQL_REGION and "connections.region", and will
be removed in a future version. Append the region name and cloud platform name to the
account name, instead.
The database name is determined by the following methods:
1. The path par t of the database URI.
2. The $SNOWSQL_DATABASE environment variable.
3. In the "connections.dbname" setting in the SnowSQL configuration file
<https://docs.snowflake.com/en/user-guide/snowsql-start.html#configuring-default-
connection-settings>.
4. If sqitch finds no value in the above places, it falls back on the system username.
Other attributes of the URI are set from the "account", "username" and "password"
attributes documented below.
"account"
Returns the Snowflake account name, or an exception if none can be determined. Sqitch
looks for the account code in this order:
1. In the host name of the target URI.
2. In the $SNOWSQL_ACCOUNT environment variable.
3. In the "connections.accountname" setting in the SnowSQL configuration file
<https://docs.snowflake.com/en/user-guide/snowsql-start.html#configuring-default-
connection-settings>.
username
Returns the snowflake user name. Sqitch looks for the user name in this order:
1. In the $SQITCH_USERNAME environment variable.
2. In the target URI.
3. In the $SNOWSQL_USER environment variable.
4. In the "connections.username" variable from the SnowSQL config file
<https://docs.snowflake.com/en/user-guide/snowsql-config.html#snowsql-config-file>.
5. The system username.
password
Returns the snowflake password. Sqitch looks for the password in this order:
1. In the $SQITCH_PASSWORD environment variable.
2. In the target URI.
3. In the $SNOWSQL_PWD environment variable.
4. In the "connections.password" variable from the SnowSQL config file
<https://docs.snowflake.com/en/user-guide/snowsql-config.html#snowsql-config-file>.
"warehouse"
Returns the warehouse to use for all connections. This value will be available to all
Snowflake change scripts as the &warehouse variable. Sqitch looks for the warehouse in
this order:
1. In the "warehouse" query parameter of the target URI
2. In the $SNOWSQL_WAREHOUSE environment variable.
3. In the "connections.warehousename" variable from the SnowSQL config file
<https://docs.snowflake.com/en/user-guide/snowsql-config.html#snowsql-config-file>.
4. If none of the above are found, it falls back on the hard-coded value "sqitch".
"role"
Returns the role to use for all connections. Sqitch looks for the role in this order:
1. In the "role" query parameter of the target URI
2. In the $SNOWSQL_ROLE environment variable.
3. In the "connections.rolename" variable from the SnowSQL config file
<https://docs.snowflake.com/en/user-guide/snowsql-config.html#snowsql-config-file>.
4. If none of the above are found, no role will be set.
Instance Methods
"initialized"
$snowflake->initialize unless $snowflake->initialized;
Returns true if the database has been initialized for Sqitch, and false if it has not.
"initialize"
$snowflake->initialize;
Initializes a database for Sqitch by installing the Sqitch registry schema.
"snowsql"
Returns a list containing the "snowsql" client and options to be passed to it. Used
internally when executing scripts.
Author
David E. Wheeler <david@justatheory.com>
License
Copyright (c) 2012-2022 iovation Inc., David E. Wheeler
Permission is hereby granted, free of charge, to any person obtaining a copy of this
software and associated documentation files (the "Software"), to deal in the Software
without restriction, including without limitation the rights to use, copy, modify, merge,
publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or
substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
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DEALINGS IN THE SOFTWARE.