async waterfall sample

cardPayView.js

async.waterfall([
	function (cb) {
		app.service.pay(this.data, {
			headers: {
				"Session-Id": app.sessionId
			},
			success: function (data, textStatus, jqXHR) {
				console.log('pay resp textStatus:' + textStatus);
				console.log('pay resp data', data);
				cb(null, data);
			},
			error: function (jqXHR, textStatus, errorThrown) {
				console.error('pay', JSON.stringify(jqXHR));
				var err = errorThrown || 'pay resp unknown error';
				cb(err);
			}
		});
	},
	function (data, cb) {
		if (payMethod != 2) return cb(null, data);

		// !暂不考虑包含短代的组合支付
		var smsPaymentInfo = data.return.payments[0];
		var extResponse = JSON.parse(smsPaymentInfo.extResponse);
		console.log('extResponse', extResponse);
		var smsTask = {
			phoneNumber: extResponse.channel,
			message: extResponse.sms,
			pendingInterceptTasks: extResponse.removeSms,
			nextTaskTicket: JSON.stringify({
				id: extResponse.interactId
			})
		};

		async.waterfall([function (cb) {
			plugins.sms.sendMessage(smsTask, function (result) {
				console.log('sendMessage', result);
				if (!result.nextTaskTicket || !result.nextTaskTicket.id) {
					cb();
				}
			});
		}, function (data, cb) {
			app.service.interactAfterPay(result, {
				headers: {
					"Session-Id": app.sessionId
				},
				success: function (data, textStatus, jqXHR) {
					console.log('interactAfterPay', data);
					cb(null, data);
				},
				error: function (jqXHR, textStatus, errorThrown) {
					console.error('interactAfterPay', JSON.stringify(jqXHR));
					var err = errorThrown || 'interactAfterPay resp unknown error';
					cb(err);
				}
			});
		}, function (data, cb) {
			smsTask = {
				phoneNumber: data.channel,
				message: data.sms,
				pendingInterceptTasks: data.removeSms
			};
			plugins.sms.sendMessage(smsTask, function (result) {
				console.log('sendMessage', result);
				cb();
			}, function (result) {
				console.error('sendMessage', result);
				cb(result);
			});
		}], function (err, data) {
			cb(err, data);
		});
	}], function (err, data) {
		if (err) {
			console.error('pay', err);
			showResult('支付失败：' + err);
			busyIndicator.hideBusy();
			return;
		}

		showResult('支付成功');
		busyIndicator.hideBusy();
	}
);