go - 在 Buffalo 中集成 Sentry 和 Elastic APM

Question

我正在尝试使用 Buffalo 将 Elastic APM 和 Sentry 集成到我的网站中。有趣的文件如下:
handlers/sentryHandler.go

package handlers

import (
    sentryhttp "github.com/getsentry/sentry-go/http"
    "github.com/gobuffalo/buffalo"
)

func SentryHandler(next buffalo.Handler) buffalo.Handler {
    handler := buffalo.WrapBuffaloHandler(next)
    sentryHandler := sentryhttp.New(sentryhttp.Options{})

    return buffalo.WrapHandler(sentryHandler.Handle(handler))
}

handlers/elasticAPMHandler.go

package handlers

import (
    "fmt"

    "github.com/gobuffalo/buffalo"
    "go.elastic.co/apm/module/apmhttp"
)

func ElasticAPMHandler(next buffalo.Handler) buffalo.Handler {
    fmt.Println("AAA")
    handler := apmhttp.Wrap(buffalo.WrapBuffaloHandler(next))
    return buffalo.WrapHandler(handler)
}

actions/app.go

package actions

import (
    "github.com/gobuffalo/buffalo"
    "github.com/gobuffalo/envy"
    forcessl "github.com/gobuffalo/mw-forcessl"
    paramlogger "github.com/gobuffalo/mw-paramlogger"
    "github.com/unrolled/secure"

    "my_website/handlers"
    "my_website/models"

    "github.com/gobuffalo/buffalo-pop/pop/popmw"
    csrf "github.com/gobuffalo/mw-csrf"
    i18n "github.com/gobuffalo/mw-i18n"
    "github.com/gobuffalo/packr/v2"
)

func App() *buffalo.App {
    if app == nil {
        app = buffalo.New(buffalo.Options{
            Env:         ENV,
            SessionName: "_my_website_session",
        })

        // Automatically redirect to SSL
        app.Use(forceSSL())

        // Catch errors and send them to Sentry.
        app.Use(handlers.SentryHandler)

        // Get tracing information and send it to Elastic.
        app.Use(handlers.ElasticAPMHandler)

        // Other Buffalo middleware stuff goes here...

        // Routing stuff goes here...
    }

    return app
}

我遇到的问题是，如果我在顶部有 Sentry/APM 处理程序，那么我会收到像 application.html: line 24: "showPagePath": unknown identifier 这样的错误。 .但是，如果我将其移至设置路由之前，则会收到未找到事务错误。所以，我猜测处理程序包装器正在删除 buffalo.Context信息。那么，除了尝试重新实现它们的包装器之外，我还需要做什么才能在 Buffalo 中集成 Sentry 和 Elastic？

Answer 1

So, I'm guessing that the handler wrappers are dropping the buffalo.Context information.

这是正确的。问题是 buffalo.WrapHandler ( Source ) 丢弃除底层 http.Request 之外的所有上下文/ http.Response :

// WrapHandler wraps a standard http.Handler and transforms it
// into a buffalo.Handler.
func WrapHandler(h http.Handler) Handler {
    return func(c Context) error {
        h.ServeHTTP(c.Response(), c.Request())
        return nil
    }
}

So, what would I need to do to be able to integrate Sentry and Elastic in Buffalo asides from trying to reimplement their wrappers?

我可以看到两个选项:

重新实现 buffalo.WrapHandler/buffalo.WrapBuffaloHandler停止扔掉 buffalo.Context。这将涉及存储 buffalo.Context在底层 http.Request的上下文，然后在另一侧再次将其拉出，而不是创建一个全新的上下文。

在不使用 Wrap* 的情况下为 Sentry 和 Elastic APM 实现 Buffalo 特定的中间件职能。

后一个选项的 Elastic APM 代理中存在一个 Unresolved 问题: elastic/apm#39 .