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grafana/pkg/services/sqlstore/migrations/alert_mig.go
T
Oleg Gaidarenko b37ee65bd3 Chore: prepare our SQL for cockroach db (#16471) 
This is basically implementation of the https://github.com/grafana/grafana/issues/8900#issuecomment-435437167
points, except for the type conversion bit.

I tried to implement idea mentioned in cockroachdb ticket (see below).
And it is possible, but it complicates things as lot - not only we have to
have 4 SQL statements instead of one, but we would have to copy the column
structure as well - PK, FG, indexes and stuff, plus there will
be additional downtime with this approach.

So idea for this pull is to prepare our SQL as much as possible, so when
cockroachdb will add support for full type conversions, we could easilly add
support for it as well.

* Add `CASCADE` to `DROP INDEX` statement

* Make string conversions explicit

Thanks @Luit

Ref #8900
Ref cockroach/cockroach#9851
2019-04-15 18:49:24 +03:00

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package migrations
import (
. "github.com/grafana/grafana/pkg/services/sqlstore/migrator"
)
func addAlertMigrations(mg *Migrator) {
alertV1 := Table{
Name: "alert",
Columns: []*Column{
{Name: "id", Type: DB_BigInt, IsPrimaryKey: true, IsAutoIncrement: true},
{Name: "version", Type: DB_BigInt, Nullable: false},
{Name: "dashboard_id", Type: DB_BigInt, Nullable: false},
{Name: "panel_id", Type: DB_BigInt, Nullable: false},
{Name: "org_id", Type: DB_BigInt, Nullable: false},
{Name: "name", Type: DB_NVarchar, Length: 255, Nullable: false},
{Name: "message", Type: DB_Text, Nullable: false},
{Name: "state", Type: DB_NVarchar, Length: 190, Nullable: false},
{Name: "settings", Type: DB_Text, Nullable: false},
{Name: "frequency", Type: DB_BigInt, Nullable: false},
{Name: "handler", Type: DB_BigInt, Nullable: false},
{Name: "severity", Type: DB_Text, Nullable: false},
{Name: "silenced", Type: DB_Bool, Nullable: false},
{Name: "execution_error", Type: DB_Text, Nullable: false},
{Name: "eval_data", Type: DB_Text, Nullable: true},
{Name: "eval_date", Type: DB_DateTime, Nullable: true},
{Name: "new_state_date", Type: DB_DateTime, Nullable: false},
{Name: "state_changes", Type: DB_Int, Nullable: false},
{Name: "created", Type: DB_DateTime, Nullable: false},
{Name: "updated", Type: DB_DateTime, Nullable: false},
},
Indices: []*Index{
{Cols: []string{"org_id", "id"}, Type: IndexType},
{Cols: []string{"state"}, Type: IndexType},
{Cols: []string{"dashboard_id"}, Type: IndexType},
},
}
// create table
mg.AddMigration("create alert table v1", NewAddTableMigration(alertV1))
// create indices
mg.AddMigration("add index alert org_id & id ", NewAddIndexMigration(alertV1, alertV1.Indices[0]))
mg.AddMigration("add index alert state", NewAddIndexMigration(alertV1, alertV1.Indices[1]))
mg.AddMigration("add index alert dashboard_id", NewAddIndexMigration(alertV1, alertV1.Indices[2]))
alert_notification := Table{
Name: "alert_notification",
Columns: []*Column{
{Name: "id", Type: DB_BigInt, IsPrimaryKey: true, IsAutoIncrement: true},
{Name: "org_id", Type: DB_BigInt, Nullable: false},
{Name: "name", Type: DB_NVarchar, Length: 190, Nullable: false},
{Name: "type", Type: DB_NVarchar, Length: 255, Nullable: false},
{Name: "settings", Type: DB_Text, Nullable: false},
{Name: "created", Type: DB_DateTime, Nullable: false},
{Name: "updated", Type: DB_DateTime, Nullable: false},
},
Indices: []*Index{
{Cols: []string{"org_id", "name"}, Type: UniqueIndex},
},
}
mg.AddMigration("create alert_notification table v1", NewAddTableMigration(alert_notification))
mg.AddMigration("Add column is_default", NewAddColumnMigration(alert_notification, &Column{
Name: "is_default", Type: DB_Bool, Nullable: false, Default: "0",
}))
mg.AddMigration("Add column frequency", NewAddColumnMigration(alert_notification, &Column{
Name: "frequency", Type: DB_BigInt, Nullable: true,
}))
mg.AddMigration("Add column send_reminder", NewAddColumnMigration(alert_notification, &Column{
Name: "send_reminder", Type: DB_Bool, Nullable: true, Default: "0",
}))
mg.AddMigration("Add column disable_resolve_message", NewAddColumnMigration(alert_notification, &Column{
Name: "disable_resolve_message", Type: DB_Bool, Nullable: false, Default: "0",
}))
mg.AddMigration("add index alert_notification org_id & name", NewAddIndexMigration(alert_notification, alert_notification.Indices[0]))
mg.AddMigration("Update alert table charset", NewTableCharsetMigration("alert", []*Column{
{Name: "name", Type: DB_NVarchar, Length: 255, Nullable: false},
{Name: "message", Type: DB_Text, Nullable: false},
{Name: "state", Type: DB_NVarchar, Length: 190, Nullable: false},
{Name: "settings", Type: DB_Text, Nullable: false},
{Name: "severity", Type: DB_Text, Nullable: false},
{Name: "execution_error", Type: DB_Text, Nullable: false},
{Name: "eval_data", Type: DB_Text, Nullable: true},
}))
mg.AddMigration("Update alert_notification table charset", NewTableCharsetMigration("alert_notification", []*Column{
{Name: "name", Type: DB_NVarchar, Length: 190, Nullable: false},
{Name: "type", Type: DB_NVarchar, Length: 255, Nullable: false},
{Name: "settings", Type: DB_Text, Nullable: false},
}))
notification_journal := Table{
Name: "alert_notification_journal",
Columns: []*Column{
{Name: "id", Type: DB_BigInt, IsPrimaryKey: true, IsAutoIncrement: true},
{Name: "org_id", Type: DB_BigInt, Nullable: false},
{Name: "alert_id", Type: DB_BigInt, Nullable: false},
{Name: "notifier_id", Type: DB_BigInt, Nullable: false},
{Name: "sent_at", Type: DB_BigInt, Nullable: false},
{Name: "success", Type: DB_Bool, Nullable: false},
},
Indices: []*Index{
{Cols: []string{"org_id", "alert_id", "notifier_id"}, Type: IndexType},
},
}
mg.AddMigration("create notification_journal table v1", NewAddTableMigration(notification_journal))
mg.AddMigration("add index notification_journal org_id & alert_id & notifier_id", NewAddIndexMigration(notification_journal, notification_journal.Indices[0]))
mg.AddMigration("drop alert_notification_journal", NewDropTableMigration("alert_notification_journal"))
alert_notification_state := Table{
Name: "alert_notification_state",
Columns: []*Column{
{Name: "id", Type: DB_BigInt, IsPrimaryKey: true, IsAutoIncrement: true},
{Name: "org_id", Type: DB_BigInt, Nullable: false},
{Name: "alert_id", Type: DB_BigInt, Nullable: false},
{Name: "notifier_id", Type: DB_BigInt, Nullable: false},
{Name: "state", Type: DB_NVarchar, Length: 50, Nullable: false},
{Name: "version", Type: DB_BigInt, Nullable: false},
{Name: "updated_at", Type: DB_BigInt, Nullable: false},
{Name: "alert_rule_state_updated_version", Type: DB_BigInt, Nullable: false},
},
Indices: []*Index{
{Cols: []string{"org_id", "alert_id", "notifier_id"}, Type: UniqueIndex},
},
}
mg.AddMigration("create alert_notification_state table v1", NewAddTableMigration(alert_notification_state))
mg.AddMigration("add index alert_notification_state org_id & alert_id & notifier_id",
NewAddIndexMigration(alert_notification_state, alert_notification_state.Indices[0]))
mg.AddMigration("Add for to alert table", NewAddColumnMigration(alertV1, &Column{
Name: "for", Type: DB_BigInt, Nullable: true,
}))
mg.AddMigration("Add column uid in alert_notification", NewAddColumnMigration(alert_notification, &Column{
Name: "uid", Type: DB_NVarchar, Length: 40, Nullable: true,
}))
mg.AddMigration("Update uid column values in alert_notification", new(RawSqlMigration).
Sqlite("UPDATE alert_notification SET uid=printf('%09d',id) WHERE uid IS NULL;").
Postgres("UPDATE alert_notification SET uid=lpad('' || id::text,9,'0') WHERE uid IS NULL;").
Mysql("UPDATE alert_notification SET uid=lpad(id,9,'0') WHERE uid IS NULL;"))
mg.AddMigration("Add unique index alert_notification_org_id_uid", NewAddIndexMigration(alert_notification, &Index{
Cols: []string{"org_id", "uid"}, Type: UniqueIndex,
}))
mg.AddMigration("Remove unique index org_id_name", NewDropIndexMigration(alert_notification, &Index{
Cols: []string{"org_id", "name"}, Type: UniqueIndex,
}))
}
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