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69 lines
1.5 KiB
69 lines
1.5 KiB
package post
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import (
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"database/sql"
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"fmt"
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"path"
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"github.com/mediocregopher/blog.mediocregopher.com/srv/cfg"
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migrate "github.com/rubenv/sql-migrate"
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)
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var migrations = []*migrate.Migration{
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&migrate.Migration{
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Id: "1",
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Up: []string{
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`CREATE TABLE posts (
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id TEXT NOT NULL PRIMARY KEY,
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title TEXT NOT NULL,
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description TEXT NOT NULL,
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series TEXT,
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published_at INTEGER NOT NULL,
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last_updated_at INTEGER,
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body TEXT NOT NULL
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)`,
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`CREATE TABLE post_tags (
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post_id TEXT NOT NULL,
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tag TEXT NOT NULL,
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UNIQUE(post_id, tag)
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)`,
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},
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Down: []string{
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"DROP TABLE post_tags",
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"DROP TABLE posts",
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},
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},
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}
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// SQLDB is a sqlite3 database which can be used by storage interfaces within
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// this package.
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type SQLDB struct {
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db *sql.DB
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}
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// NewSQLDB initializes and returns a new sqlite3 database for post storage
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// intefaces. The db will be created within the given data directory.
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func NewSQLDB(dataDir cfg.DataDir) (*SQLDB, error) {
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path := path.Join(dataDir.Path, "post.sqlite3")
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db, err := sql.Open("sqlite3", path)
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if err != nil {
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return nil, fmt.Errorf("opening sqlite file at %q: %w", path, err)
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}
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migrations := &migrate.MemoryMigrationSource{Migrations: migrations}
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if _, err := migrate.Exec(db, "sqlite3", migrations, migrate.Up); err != nil {
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return nil, fmt.Errorf("running migrations: %w", err)
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}
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return &SQLDB{db}, nil
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}
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// Close cleans up loose resources being held by the db.
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func (db *SQLDB) Close() error {
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return db.db.Close()
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}
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