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404 lines
9.3 KiB
Go
404 lines
9.3 KiB
Go
package postgres
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import (
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"context"
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"database/sql"
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"encoding/json"
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"fmt"
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"net/url"
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"github.com/lib/pq"
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_ "github.com/lib/pq"
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"gitlab-odx.oracle.com/odx/functions/api/datastore/internal/datastoreutil"
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"gitlab-odx.oracle.com/odx/functions/api/models"
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)
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const routesTableCreate = `
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CREATE TABLE IF NOT EXISTS routes (
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app_name character varying(256) NOT NULL,
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path text NOT NULL,
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image character varying(256) NOT NULL,
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format character varying(16) NOT NULL,
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memory integer NOT NULL,
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timeout integer NOT NULL,
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idle_timeout integer NOT NULL,
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type character varying(16) NOT NULL,
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headers text NOT NULL,
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config text NOT NULL,
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PRIMARY KEY (app_name, path)
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);`
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const appsTableCreate = `CREATE TABLE IF NOT EXISTS apps (
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name character varying(256) NOT NULL PRIMARY KEY,
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config text NOT NULL
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);`
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const extrasTableCreate = `CREATE TABLE IF NOT EXISTS extras (
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key character varying(256) NOT NULL PRIMARY KEY,
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value character varying(256) NOT NULL
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);`
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const routeSelector = `SELECT app_name, path, image, format, memory, type, timeout, idle_timeout, headers, config FROM routes`
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const callsTableCreate = `CREATE TABLE IF NOT EXISTS calls (
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created_at character varying(256) NOT NULL,
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started_at character varying(256) NOT NULL,
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completed_at character varying(256) NOT NULL,
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status character varying(256) NOT NULL,
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id character varying(256) NOT NULL,
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app_name character varying(256) NOT NULL,
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path character varying(256) NOT NULL,
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PRIMARY KEY (id)
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);`
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const callSelector = `SELECT id, created_at, started_at, completed_at, status, app_name, path FROM calls`
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type PostgresDatastore struct {
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db *sql.DB
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}
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func New(url *url.URL) (models.Datastore, error) {
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tables := []string{routesTableCreate, appsTableCreate, extrasTableCreate, callsTableCreate}
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sqlDatastore := &PostgresDatastore{}
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dialect := "postgres"
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db, err := datastoreutil.NewDatastore(url.String(), dialect, tables)
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if err != nil {
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return nil, err
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}
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sqlDatastore.db = db
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return datastoreutil.NewValidator(sqlDatastore), nil
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}
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func (ds *PostgresDatastore) InsertApp(ctx context.Context, app *models.App) (*models.App, error) {
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var cbyte []byte
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var err error
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if app.Config != nil {
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cbyte, err = json.Marshal(app.Config)
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if err != nil {
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return nil, err
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}
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}
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_, err = ds.db.Exec(`INSERT INTO apps (name, config) VALUES ($1, $2);`,
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app.Name,
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string(cbyte),
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)
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if err != nil {
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pqErr := err.(*pq.Error)
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if pqErr.Code == "23505" {
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return nil, models.ErrAppsAlreadyExists
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}
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return nil, err
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}
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return app, nil
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}
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func (ds *PostgresDatastore) UpdateApp(ctx context.Context, newapp *models.App) (*models.App, error) {
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app := &models.App{Name: newapp.Name}
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err := ds.Tx(func(tx *sql.Tx) error {
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row := ds.db.QueryRow("SELECT config FROM apps WHERE name=$1", app.Name)
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var config string
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if err := row.Scan(&config); err != nil {
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if err == sql.ErrNoRows {
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return models.ErrAppsNotFound
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}
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return err
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}
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if len(config) > 0 {
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err := json.Unmarshal([]byte(config), &app.Config)
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if err != nil {
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return err
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}
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}
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app.UpdateConfig(newapp.Config)
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cbyte, err := json.Marshal(app.Config)
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if err != nil {
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return err
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}
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res, err := ds.db.Exec(`UPDATE apps SET config = $2 WHERE name = $1;`, app.Name, string(cbyte))
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if err != nil {
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return err
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}
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if n, err := res.RowsAffected(); err != nil {
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return err
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} else if n == 0 {
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return models.ErrAppsNotFound
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}
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return nil
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})
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if err != nil {
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return nil, err
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}
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return app, nil
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}
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func (ds *PostgresDatastore) RemoveApp(ctx context.Context, appName string) error {
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_, err := ds.db.Exec(`DELETE FROM apps WHERE name = $1`, appName)
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return err
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}
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func (ds *PostgresDatastore) GetApp(ctx context.Context, name string) (*models.App, error) {
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queryStr := "SELECT name, config FROM apps WHERE name=$1"
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queryArgs := []interface{}{name}
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return datastoreutil.SQLGetApp(ds.db, queryStr, queryArgs...)
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}
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func (ds *PostgresDatastore) GetApps(ctx context.Context, filter *models.AppFilter) ([]*models.App, error) {
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whereStm := "WHERE name LIKE $1"
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selectStm := "SELECT DISTINCT * FROM apps %s"
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return datastoreutil.SQLGetApps(ds.db, filter, whereStm, selectStm)
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}
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func (ds *PostgresDatastore) InsertRoute(ctx context.Context, route *models.Route) (*models.Route, error) {
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hbyte, err := json.Marshal(route.Headers)
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if err != nil {
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return nil, err
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}
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cbyte, err := json.Marshal(route.Config)
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if err != nil {
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return nil, err
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}
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err = ds.Tx(func(tx *sql.Tx) error {
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r := tx.QueryRow(`SELECT 1 FROM apps WHERE name=$1`, route.AppName)
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if err := r.Scan(new(int)); err != nil {
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if err == sql.ErrNoRows {
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return models.ErrAppsNotFound
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}
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return err
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}
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same, err := tx.Query(`SELECT 1 FROM routes WHERE app_name=$1 AND path=$2`,
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route.AppName, route.Path)
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if err != nil {
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return err
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}
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defer same.Close()
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if same.Next() {
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return models.ErrRoutesAlreadyExists
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}
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_, err = tx.Exec(`
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INSERT INTO routes (
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app_name,
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path,
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image,
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format,
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memory,
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type,
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timeout,
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idle_timeout,
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headers,
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config
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)
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VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10);`,
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route.AppName,
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route.Path,
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route.Image,
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route.Format,
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route.Memory,
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route.Type,
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route.Timeout,
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route.IdleTimeout,
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string(hbyte),
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string(cbyte),
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)
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return err
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})
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if err != nil {
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return nil, err
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}
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return route, nil
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}
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func (ds *PostgresDatastore) UpdateRoute(ctx context.Context, newroute *models.Route) (*models.Route, error) {
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var route models.Route
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err := ds.Tx(func(tx *sql.Tx) error {
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row := ds.db.QueryRow(fmt.Sprintf("%s WHERE app_name=$1 AND path=$2", routeSelector), newroute.AppName, newroute.Path)
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if err := datastoreutil.ScanRoute(row, &route); err == sql.ErrNoRows {
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return models.ErrRoutesNotFound
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} else if err != nil {
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return err
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}
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route.Update(newroute)
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hbyte, err := json.Marshal(route.Headers)
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if err != nil {
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return err
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}
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cbyte, err := json.Marshal(route.Config)
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if err != nil {
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return err
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}
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res, err := tx.Exec(`
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UPDATE routes SET
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image = $3,
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format = $4,
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memory = $5,
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type = $6,
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timeout = $7,
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idle_timeout = $8,
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headers = $9,
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config = $10
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WHERE app_name = $1 AND path = $2;`,
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route.AppName,
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route.Path,
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route.Image,
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route.Format,
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route.Memory,
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route.Type,
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route.Timeout,
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route.IdleTimeout,
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string(hbyte),
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string(cbyte),
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)
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if err != nil {
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return err
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}
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if n, err := res.RowsAffected(); err != nil {
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return err
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} else if n == 0 {
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return models.ErrRoutesNotFound
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}
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return nil
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})
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if err != nil {
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return nil, err
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}
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return &route, nil
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}
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func (ds *PostgresDatastore) RemoveRoute(ctx context.Context, appName, routePath string) error {
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deleteStm := `DELETE FROM routes WHERE path = $1 AND app_name = $2`
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return datastoreutil.SQLRemoveRoute(ds.db, appName, routePath, deleteStm)
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}
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func (ds *PostgresDatastore) GetRoute(ctx context.Context, appName, routePath string) (*models.Route, error) {
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rSelectCondition := "%s WHERE app_name=$1 AND path=$2"
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return datastoreutil.SQLGetRoute(ds.db, appName, routePath, rSelectCondition, routeSelector)
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}
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func (ds *PostgresDatastore) GetRoutes(ctx context.Context, filter *models.RouteFilter) ([]*models.Route, error) {
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whereStm := "WHERE %s $1"
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andStm := " AND %s $%d"
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return datastoreutil.SQLGetRoutes(ds.db, filter, routeSelector, whereStm, andStm)
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}
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func (ds *PostgresDatastore) GetRoutesByApp(ctx context.Context, appName string, filter *models.RouteFilter) ([]*models.Route, error) {
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defaultFilterQuery := "WHERE app_name = $1"
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whereStm := "WHERE %s $1"
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andStm := " AND %s $%d"
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return datastoreutil.SQLGetRoutesByApp(ds.db, appName, filter, routeSelector, defaultFilterQuery, whereStm, andStm)
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}
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func (ds *PostgresDatastore) Put(ctx context.Context, key, value []byte) error {
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_, err := ds.db.Exec(`
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INSERT INTO extras (
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key,
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value
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)
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VALUES ($1, $2)
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ON CONFLICT (key) DO UPDATE SET
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value = $2;
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`, string(key), string(value))
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if err != nil {
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return err
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}
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return nil
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}
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func (ds *PostgresDatastore) Get(ctx context.Context, key []byte) ([]byte, error) {
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row := ds.db.QueryRow("SELECT value FROM extras WHERE key=$1", key)
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var value string
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err := row.Scan(&value)
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if err == sql.ErrNoRows {
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return nil, nil
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} else if err != nil {
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return nil, err
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}
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return []byte(value), nil
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}
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func (ds *PostgresDatastore) Tx(f func(*sql.Tx) error) error {
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tx, err := ds.db.Begin()
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if err != nil {
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return err
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}
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err = f(tx)
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if err != nil {
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tx.Rollback()
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return err
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}
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return tx.Commit()
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}
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func (ds *PostgresDatastore) InsertTask(ctx context.Context, task *models.Task) error {
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err := ds.Tx(func(tx *sql.Tx) error {
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_, err := tx.Exec(
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`INSERT INTO calls (
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id,
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created_at,
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started_at,
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completed_at,
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status,
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app_name,
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path) VALUES ($1, $2, $3, $4, $5, $6, $7);`,
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task.ID,
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task.CreatedAt.String(),
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task.StartedAt.String(),
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task.CompletedAt.String(),
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task.Status,
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task.AppName,
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task.Path,
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)
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return err
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})
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return err
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}
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func (ds *PostgresDatastore) GetTask(ctx context.Context, callID string) (*models.FnCall, error) {
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whereStm := "%s WHERE id=$1"
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return datastoreutil.SQLGetCall(ds.db, callSelector, callID, whereStm)
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}
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func (ds *PostgresDatastore) GetTasks(ctx context.Context, filter *models.CallFilter) (models.FnCalls, error) {
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whereStm := "WHERE %s $1"
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andStm := " AND %s $2"
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return datastoreutil.SQLGetCalls(ds.db, callSelector, filter, whereStm, andStm)
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}
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