Add flag to disable plan validation (#130)

Author: bplunkett-stripe

cmd/pg-schema-diff/plan_cmd.go

@@ -85,7 +85,8 @@ type (
 
 		schemaFlags schemaFlags
 
-		dataPackNewTables bool
+		dataPackNewTables     bool
+		disablePlanValidation bool
 
 		statementTimeoutModifiers []string
 		lockTimeoutModifiers      []string
@@ -124,6 +125,8 @@ func createPlanFlags(cmd *cobra.Command) *planFlags {
 	schemaFlagsVar(cmd, &flags.schemaFlags)
 
 	cmd.Flags().BoolVar(&flags.dataPackNewTables, "data-pack-new-tables", true, "If set, will data pack new tables in the plan to minimize table size (re-arranges columns).")
+	cmd.Flags().BoolVar(&flags.disablePlanValidation, "disable-plan-validation", false, "If set, will disable plan validation. Plan validation runs the migration against a temporary"+
+		"database with an identical schema to the original, asserting that the generated plan actually migrates the schema to the desired target.")
 
 	timeoutModifierFlagVar(cmd, &flags.statementTimeoutModifiers, "statement", "t")
 	timeoutModifierFlagVar(cmd, &flags.lockTimeoutModifiers, "lock", "l")
@@ -178,6 +181,9 @@ func parsePlanConfig(p planFlags) (planConfig, error) {
 	if p.dataPackNewTables {
 		opts = append(opts, diff.WithDataPackNewTables())
 	}
+	if p.disablePlanValidation {
+		opts = append(opts, diff.WithDoNotValidatePlan())
+	}
 
 	var statementTimeoutModifiers []timeoutModifier
 	for _, s := range p.statementTimeoutModifiers {