[英]Javascript ES5/ES6 classes and error handling
Say I have a class like this说我有一堂这样的课
class SomeUIComponentDataStore {
async function getUser() {
try { //do something that can fail}
catch(e) {
// gracefully fail, setting portion of ui to fail state
Sentry.captureException(e); // report to some metrics service
}
}
}
I repeat that pattern for every async function.我为每个异步函数重复该模式。 Where on failure I respond to the error, and then report it to some service (in this case that service is Sentry).
在失败时,我会响应错误,然后将其报告给某个服务(在这种情况下,该服务是 Sentry)。
Is there anyway I can create a BaseClass, that will automatically decorate my catch statement with Sentry.caputreException().无论如何我可以创建一个BaseClass,它会自动用Sentry.caputreException()装饰我的catch语句。 Or do i have to manually write it each time a I see an error.
还是每次我看到错误时都必须手动编写它。
You could define a decorator to reuse that logic and decorate methods that can throw:您可以定义一个装饰器来重用该逻辑并装饰可以抛出的方法:
function catchError(target, name, descriptor) {
const original = descriptor.value;
if (typeof original === 'function') {
descriptor.value = function(...args) {
try {
return original.apply(this, args);
} catch (e) {
Sentry.captureException(e); // report to some metrics service
}
}
}
}
function catchErrorAsync(target, name, descriptor) {
const original = descriptor.value;
if (typeof original === 'function') {
descriptor.value = async function(...args) {
try {
return await original.apply(this, args);
} catch (e) {
Sentry.captureException(e); // report to some metrics service
}
}
}
}
class SomeUIComponentDataStore {
@catchErrorAsync
async getUser() {
//do something that can fail
}
@catchError
otherMethod() {
//do something that can fail
}
}
You could create a base class with the Sentry.captureException(e);
您可以使用
Sentry.captureException(e);
创建一个基类Sentry.captureException(e);
, and then have overrideable functions for the custom try/catch functionality. ,然后为自定义 try/catch 功能提供可覆盖的函数。
class BaseClass {
function onGetUser() {
throw new Error("Method not implemented");
}
function onGetUserFail() {
throw new Error("Method not implemented");
}
async function getUser() {
try {
onGetUser();
} catch (e) {
onGetUserFail();
Sentry.captureException(e);
}
}
}
class SomeUIComponentDataStore extends BaseClass {
function onGetUser() {
// do something
}
function onGetUserFail() {
// do something
}
}
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