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Add database migration #305
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,189 @@ | ||
| //! Database migrations | ||
|
|
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| use db::connect_db; | ||
| use error::Result as CratesfyiResult; | ||
| use postgres::error::Error as PostgresError; | ||
| use postgres::transaction::Transaction; | ||
| use schemamama::{Migration, Migrator, Version}; | ||
| use schemamama_postgres::{PostgresAdapter, PostgresMigration}; | ||
|
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|
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| /// Creates a new PostgresMigration from upgrade and downgrade queries. | ||
| /// Downgrade query should return database to previous state. | ||
| /// | ||
| /// Example: | ||
| /// | ||
| /// ``` | ||
| /// let my_migration = migration!(100, | ||
| /// "Create test table", | ||
| /// "CREATE TABLE test ( id SERIAL);", | ||
| /// "DROP TABLE test;"); | ||
| /// ``` | ||
| macro_rules! migration { | ||
| ($version:expr, $description:expr, $up:expr, $down:expr) => {{ | ||
| struct Amigration; | ||
| impl Migration for Amigration { | ||
| fn version(&self) -> Version { | ||
| $version | ||
| } | ||
| fn description(&self) -> String { | ||
| $description.to_owned() | ||
| } | ||
| } | ||
| impl PostgresMigration for Amigration { | ||
| fn up(&self, transaction: &Transaction) -> Result<(), PostgresError> { | ||
| info!("Applying migration {}: {}", self.version(), self.description()); | ||
| transaction.batch_execute($up).map(|_| ()) | ||
| } | ||
| fn down(&self, transaction: &Transaction) -> Result<(), PostgresError> { | ||
| info!("Removing migration {}: {}", self.version(), self.description()); | ||
| transaction.batch_execute($down).map(|_| ()) | ||
| } | ||
| } | ||
| Box::new(Amigration) | ||
| }}; | ||
| } | ||
|
|
||
|
|
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| pub fn migrate(version: Option<Version>) -> CratesfyiResult<()> { | ||
| let conn = connect_db()?; | ||
| let adapter = PostgresAdapter::with_metadata_table(&conn, "database_versions"); | ||
| adapter.setup_schema()?; | ||
|
|
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| let mut migrator = Migrator::new(adapter); | ||
|
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| let migrations: Vec<Box<PostgresMigration>> = vec![ | ||
| migration!( | ||
| // version | ||
| 1, | ||
| // description | ||
| "Initial database schema", | ||
| // upgrade query | ||
| "CREATE TABLE crates ( | ||
| id SERIAL PRIMARY KEY, | ||
| name VARCHAR(255) UNIQUE NOT NULL, | ||
| latest_version_id INT DEFAULT 0, | ||
| versions JSON DEFAULT '[]', | ||
| downloads_total INT DEFAULT 0, | ||
| github_description VARCHAR(1024), | ||
| github_stars INT DEFAULT 0, | ||
| github_forks INT DEFAULT 0, | ||
| github_issues INT DEFAULT 0, | ||
| github_last_commit TIMESTAMP, | ||
| github_last_update TIMESTAMP, | ||
| content tsvector | ||
| ); | ||
| CREATE TABLE releases ( | ||
| id SERIAL PRIMARY KEY, | ||
| crate_id INT NOT NULL REFERENCES crates(id), | ||
| version VARCHAR(100), | ||
| release_time TIMESTAMP, | ||
| dependencies JSON, | ||
| target_name VARCHAR(255), | ||
| yanked BOOL DEFAULT FALSE, | ||
| is_library BOOL DEFAULT TRUE, | ||
| build_status BOOL DEFAULT FALSE, | ||
| rustdoc_status BOOL DEFAULT FALSE, | ||
| test_status BOOL DEFAULT FALSE, | ||
| license VARCHAR(100), | ||
| repository_url VARCHAR(255), | ||
| homepage_url VARCHAR(255), | ||
| documentation_url VARCHAR(255), | ||
| description VARCHAR(1024), | ||
| description_long VARCHAR(51200), | ||
| readme VARCHAR(51200), | ||
| authors JSON, | ||
| keywords JSON, | ||
| have_examples BOOL DEFAULT FALSE, | ||
| downloads INT DEFAULT 0, | ||
| files JSON, | ||
| doc_targets JSON DEFAULT '[]', | ||
| doc_rustc_version VARCHAR(100) NOT NULL, | ||
| default_target VARCHAR(100), | ||
| UNIQUE (crate_id, version) | ||
| ); | ||
| CREATE TABLE authors ( | ||
| id SERIAL PRIMARY KEY, | ||
| name VARCHAR(255), | ||
| email VARCHAR(255), | ||
| slug VARCHAR(255) UNIQUE NOT NULL | ||
| ); | ||
| CREATE TABLE author_rels ( | ||
| rid INT REFERENCES releases(id), | ||
| aid INT REFERENCES authors(id), | ||
| UNIQUE(rid, aid) | ||
| ); | ||
| CREATE TABLE keywords ( | ||
| id SERIAL PRIMARY KEY, | ||
| name VARCHAR(255), | ||
| slug VARCHAR(255) NOT NULL UNIQUE | ||
| ); | ||
| CREATE TABLE keyword_rels ( | ||
| rid INT REFERENCES releases(id), | ||
| kid INT REFERENCES keywords(id), | ||
| UNIQUE(rid, kid) | ||
| ); | ||
| CREATE TABLE owners ( | ||
| id SERIAL PRIMARY KEY, | ||
| login VARCHAR(255) NOT NULL UNIQUE, | ||
| avatar VARCHAR(255), | ||
| name VARCHAR(255), | ||
| email VARCHAR(255) | ||
| ); | ||
| CREATE TABLE owner_rels ( | ||
| cid INT REFERENCES releases(id), | ||
| oid INT REFERENCES owners(id), | ||
| UNIQUE(cid, oid) | ||
| ); | ||
| CREATE TABLE builds ( | ||
| id SERIAL, | ||
| rid INT NOT NULL REFERENCES releases(id), | ||
| rustc_version VARCHAR(100) NOT NULL, | ||
| cratesfyi_version VARCHAR(100) NOT NULL, | ||
| build_status BOOL NOT NULL, | ||
| build_time TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP, | ||
| output TEXT | ||
| ); | ||
| CREATE TABLE queue ( | ||
| id SERIAL, | ||
| name VARCHAR(255), | ||
| version VARCHAR(100), | ||
| attempt INT DEFAULT 0, | ||
| date_added TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP, | ||
| UNIQUE(name, version) | ||
| ); | ||
| CREATE TABLE files ( | ||
| path VARCHAR(4096) NOT NULL PRIMARY KEY, | ||
| mime VARCHAR(100) NOT NULL, | ||
| date_added TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP, | ||
| date_updated TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP, | ||
| content BYTEA | ||
| ); | ||
| CREATE TABLE config ( | ||
| name VARCHAR(100) NOT NULL PRIMARY KEY, | ||
| value JSON NOT NULL | ||
| ); | ||
| CREATE INDEX ON releases (release_time DESC); | ||
| CREATE INDEX content_idx ON crates USING gin(content);", | ||
| // downgrade query | ||
| "DROP TABLE authors, author_rels, keyword_rels, keywords, owner_rels, | ||
| owners, releases, crates, builds, queue, files, config;" | ||
| ), | ||
| ]; | ||
|
|
||
| for migration in migrations { | ||
| migrator.register(migration); | ||
| } | ||
|
|
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| if let Some(version) = version { | ||
| if version > migrator.current_version()?.unwrap_or(0) { | ||
| migrator.up(Some(version))?; | ||
| } else { | ||
| migrator.down(Some(version))?; | ||
| } | ||
| } else { | ||
| migrator.up(version)?; | ||
| } | ||
|
|
||
| Ok(()) | ||
| } | ||
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I'm worried whether this will attempt to recreate all the tables if this is used with an existing database (that uses the
configtable to track its version). Should we include a check to look for adatabase_versionentry in theconfigtable before assuming an empty database?