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10_add_app_id.go
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10_add_app_id.go
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package migrations
import (
"context"
"database/sql"
"fmt"
"github.com/fnproject/fn/api/datastore/sql/migratex"
"github.com/fnproject/fn/api/id"
"github.com/fnproject/fn/api/models"
"github.com/jmoiron/sqlx"
)
// routes.annotations is retconned to NULLABLE here to allow migrations to proceed
// see migrations 11 and 12 that fix this back up to NOT NULL
var sqlStatements = [...]string{`CREATE TABLE IF NOT EXISTS routes (
app_id varchar(256) NOT NULL,
path varchar(256) NOT NULL,
image varchar(256) NOT NULL,
format varchar(16) NOT NULL,
memory int NOT NULL,
cpus int,
timeout int NOT NULL,
idle_timeout int NOT NULL,
type varchar(16) NOT NULL,
headers text NOT NULL,
config text NOT NULL,
annotations text,
created_at text,
updated_at varchar(256),
PRIMARY KEY (app_id, path)
);`,
`CREATE TABLE IF NOT EXISTS calls (
created_at varchar(256) NOT NULL,
started_at varchar(256) NOT NULL,
completed_at varchar(256) NOT NULL,
status varchar(256) NOT NULL,
id varchar(256) NOT NULL,
app_id varchar(256) NOT NULL,
path varchar(256) NOT NULL,
stats text,
error text,
PRIMARY KEY (id)
);`,
`CREATE TABLE IF NOT EXISTS logs (
id varchar(256) NOT NULL PRIMARY KEY,
app_id varchar(256) NOT NULL,
log text NOT NULL
);`,
}
var tables = [...]map[string]string{
{"table": "routes", "statement": sqlStatements[0],
"columns": "app_id,path,image,format,memory,cpus,timeout," +
"idle_timeout,type,headers,config,annotations,created_at,updated_at"},
{"table": "calls", "statement": sqlStatements[1],
"columns": "created_at,started_at,completed_at,status,id,app_id,path,stats,error"},
{"table": "logs", "statement": sqlStatements[2],
"columns": "id,app_id,log"},
}
func up10(ctx context.Context, tx *sqlx.Tx) error {
addAppIDStatements := []string{
"ALTER TABLE apps ADD id VARCHAR(256);",
"ALTER TABLE calls ADD app_id VARCHAR(256);",
"ALTER TABLE logs ADD app_id VARCHAR(256);",
"ALTER TABLE routes ADD app_id VARCHAR(256);",
}
for _, statement := range addAppIDStatements {
_, err := tx.ExecContext(ctx, statement)
if err != nil {
return err
}
}
rows, err := tx.QueryxContext(ctx, "SELECT DISTINCT name FROM apps;")
if err != nil {
return err
}
res := []*models.App{}
for rows.Next() {
var app models.App
err := rows.StructScan(&app)
if err != nil {
if err == sql.ErrNoRows {
return nil
}
return err
}
app.ID = id.New().String()
res = append(res, &app)
}
err = rows.Close()
if err != nil {
return err
}
if err := rows.Err(); err != nil {
return err
}
// it is required for some reason, can't do this within the rows iteration.
for _, app := range res {
query := tx.Rebind(`UPDATE apps SET id=:id WHERE name=:name`)
_, err = tx.NamedExecContext(ctx, query, app)
if err != nil {
return err
}
for _, t := range []string{"routes", "calls", "logs"} {
/* #nosec */
q := fmt.Sprintf(`UPDATE %s SET app_id=:id WHERE app_name=:name;`, t)
_, err = tx.NamedExecContext(ctx, tx.Rebind(q), app)
if err != nil {
return err
}
}
}
if tx.DriverName() != "sqlite3" {
dropAppNameStatements := []string{
"ALTER TABLE routes DROP COLUMN app_name;",
"ALTER TABLE calls DROP COLUMN app_name;",
"ALTER TABLE logs DROP COLUMN app_name;",
}
for _, statement := range dropAppNameStatements {
_, err := tx.ExecContext(ctx, statement)
if err != nil {
return err
}
}
} else {
for _, t := range tables {
statement := t["statement"]
tableName := t["table"]
columns := t["columns"]
/* #nosec */
_, err = tx.ExecContext(ctx, tx.Rebind(fmt.Sprintf("ALTER TABLE %s RENAME TO old_%s;", tableName, tableName)))
if err != nil {
return err
}
_, err = tx.ExecContext(ctx, tx.Rebind(statement))
if err != nil {
return err
}
/* #nosec */
_, err = tx.ExecContext(ctx, tx.Rebind(fmt.Sprintf("INSERT INTO %s (%s) SELECT %s FROM old_%s;", tableName, columns, columns, tableName)))
if err != nil {
return err
}
/* #nosec */
_, err = tx.ExecContext(ctx, tx.Rebind(fmt.Sprintf("DROP TABLE old_%s;", tableName)))
if err != nil {
return err
}
}
}
return nil
}
func down10(ctx context.Context, tx *sqlx.Tx) error {
addAppNameStatements := []string{
"ALTER TABLE calls ADD app_name VARCHAR(256);",
"ALTER TABLE logs ADD app_name VARCHAR(256);",
"ALTER TABLE routes ADD app_name VARCHAR(256);",
}
for _, statement := range addAppNameStatements {
_, err := tx.ExecContext(ctx, statement)
if err != nil {
return err
}
}
rows, err := tx.QueryxContext(ctx, "SELECT DISTINCT id, name FROM apps;")
if err != nil {
return err
}
res := []*models.App{}
for rows.Next() {
var app models.App
err := rows.StructScan(&app)
if err != nil {
if err == sql.ErrNoRows {
return nil
}
return err
}
res = append(res, &app)
}
err = rows.Close()
if err != nil {
return err
}
if err := rows.Err(); err != nil {
return err
}
// it is required for some reason, can't do this within the rows iteration.
for _, app := range res {
for _, t := range []string{"routes", "calls", "logs"} {
/* #nosec */
q := fmt.Sprintf("UPDATE %s SET app_name=:name WHERE app_id=:id;", t)
_, err = tx.NamedExecContext(ctx, tx.Rebind(q), app)
if err != nil {
return err
}
}
}
removeAppIDStatements := []string{
"ALTER TABLE logs DROP COLUMN app_id;",
"ALTER TABLE calls DROP COLUMN app_id;",
"ALTER TABLE routes DROP COLUMN app_id;",
"ALTER TABLE apps DROP COLUMN id;",
}
for _, statement := range removeAppIDStatements {
_, err := tx.ExecContext(ctx, statement)
if err != nil {
return err
}
}
return nil
}
func init() {
Migrations = append(Migrations, &migratex.MigFields{
VersionFunc: vfunc(10),
UpFunc: up10,
DownFunc: down10,
})
}