/
migrations.go
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/
migrations.go
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// Copyright 2024 The Solaris Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package postgres
import (
"context"
"database/sql"
migrate "github.com/rubenv/sql-migrate"
)
const (
initSchemaUp = `
create table if not exists "log"
(
"id" varchar(32) not null,
"tags" jsonb not null default '{}'::jsonb,
"records" integer not null default 0,
"deleted" boolean not null default false,
"created_at" timestamp with time zone not null default (now() at time zone 'utc'),
"updated_at" timestamp with time zone not null default (now() at time zone 'utc'),
primary key ("id")
);
create index if not exists "idx_log_tags" on "log" using gin ("tags");
create table if not exists "chunk"
(
"id" varchar(32) not null,
"log_id" varchar(32) references "log" ("id") on delete cascade,
"min" varchar(32) not null default '',
"max" varchar(32) not null default '',
"records" integer not null default 0,
primary key ("log_id", "id")
);
`
initSchemaDown = `
drop table if exists "log";
drop table if exists "chunk";
`
)
func initSchema(id string) *migrate.Migration {
return &migrate.Migration{
Id: id,
Up: []string{initSchemaUp},
Down: []string{initSchemaDown},
}
}
func migrations() []*migrate.Migration {
return []*migrate.Migration{
initSchema("0"),
}
}
func migrateUp(ctx context.Context, db *sql.DB) error {
mms := migrate.MemoryMigrationSource{Migrations: migrations()}
if _, err := migrate.ExecContext(ctx, db, "postgres", mms, migrate.Up); err != nil {
return err
}
return nil
}
func migrateDown(ctx context.Context, db *sql.DB) error {
mms := migrate.MemoryMigrationSource{Migrations: migrations()}
if _, err := migrate.ExecContext(ctx, db, "postgres", mms, migrate.Down); err != nil {
return err
}
return nil
}