Account.ts

const MAX_RETRY_COUNT = 3;

@sources.Mysql()
export class Account extends Process {
    public name: string;
    // plain text, just a demo
    public password: string;

    public retryCount: number;

    public reset: ProcessEndpoint<string, boolean>;

    public login: ProcessEndpoint<string, boolean>;

    public process() {
        let password: string;
        while (true) {
            locked: this.commit();
            const resetCall = this.recv('reset');
            password = resetCall.request;
            if (this.isPasswordComplex(password)) {
                this.respond(resetCall, true);
                break;
            }
            this.respond(resetCall, false);
        }
        let retryCount = MAX_RETRY_COUNT;
        for (; retryCount > 0; retryCount -= 1) {
            normal: this.commit();
            const loginAttempt = this.recv('login');
            const success = loginAttempt.request === password;
            this.respond(loginAttempt, success);
            if (success) {
                retryCount = MAX_RETRY_COUNT + 1;
                continue;
            }
        }
        __GOBACK__('locked');
    }

    private isPasswordComplex(password: string) {
        return password && password.length > 6;
    }
}