This flamingo module provides a simple MySQL implementation by wrapping github.com/jmoiron/sqlx and a migration tool by wrapping github.com/golang-migrate/migrate as Flamingo Modules.
The DB Flamingo module provides the interface DB and binds an sqlx connection
as singleton to it. The module will panic on startup when the connection can't be established.
db:
host: "host"
port: "3306" # must be a string!
databaseName: "databaseName"
user: "user"
password: "password"
maxConnectionLifetime: 0 # in seconds, 0 means to set nothing, negative values mean unlimited
# a set of additional connection options which are added as parameters to the DB URL
connectionOptions:
myOption1: "myValue1" # all option values must be strings
myOption2: "false"The migration module relies on the db module and can handle schema migration and data seeding scripts. Both must be provided as simple SQL scripts.
The module provides additional Flamingo commands as entrypoints:
migrate [up|down] (-s[number of steps])seed
migrations:
automigrate: false,
directory: "sql/migrations/",
seeds:
directory: "sql/seeds/",The Migration Module also adds "db.connectionOptions.multiStatements": "true" to the db configuration
to handle migration and seed scripts.
Migration scripts must be placed into the configured directory. For each migration, there must be an "up" and a "down" script. Please refer to github.com/golang-migrate/migrate for more detailed documentation.
If you set the automigrate config to true, flamingo will run a migrate up on each application start (flamingo.StartupEvent).
Seeding scripts must be placed into the configured directory. The seed command runs all scripts in lexical order (see filepath.Walk).
sql
├── migrations
│ ├── 1_usertable.up.sql
│ ├── 1_usertable.down.sql
│ ├── 2_other-table.up.sql
│ ├── 2_other-table.down.sql
│ ├── 3_usertable-addColumn.up.sql
│ └── 3_usertable-addColumn.down.sql
└── seeds
├── users.sql
└── other-data.sql