I want to stop forwarding of a specific request path

[ohs30359-nobuhara]

I am currently using goreplay to forward requests to a REST API that provides the following endpoints:

• [GET] /users/${ID}
• [POST] /users/${ID}
• [GET] /history/${ID}
• [POST] /history/${ID}

My goal is to forward all requests except for the [POST] /users/${ID} endpoint. Unfortunately, the existing options --http-allow-method and --http-allow-url do not fully meet this requirement.

Is there any way to meet this requirement?

[dosubot[bot]]

🤖

Yes, you can configure GoReplay to forward all requests except for the [POST] /users/${ID} endpoint by using the --http-disallow-url option. This option allows you to specify a regular expression that matches the URLs you want to exclude from forwarding.

Here is the command you can use:

gor --input-raw :8080 --output-http staging.com --http-disallow-url "/users/.*"

This command will forward all requests except those sent to the /users/${ID} endpoint. The regular expression /users/.* matches any URL that starts with /users/ followed by any characters, effectively excluding all URLs of the form /users/${ID}.

You can find more information about request filtering in GoReplay in the Request Filtering section of the GoReplay wiki.

Also, I can confirm that the current version of GoReplay (v1.3.3) does support the --http-disallow-url option. This is evident from the HTTPModifierConfig struct in the GoReplay source code, which has a field named URLNegativeRegexp that is annotated with json:"http-disallow-url". This annotation is used for mapping the JSON configuration field http-disallow-url to the Go struct field URLNegativeRegexp.

Here is the relevant code:

type HTTPModifierConfig struct {
    URLNegativeRegexp      HTTPURLRegexp              `json:"http-disallow-url"`
    // other fields...
}

This means that when GoReplay is parsing the configuration, it will recognize the http-disallow-url option and map it to the URLNegativeRegexp field in the HTTPModifierConfig struct. You can find this in the http_modifier_settings.go file in the GoReplay repository.

I hope this helps! If you have any other questions, feel free to ask.

Sources

• Request Filtering
• http_modifier_settings.go

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[ohs30359-nobuhara]

This proposal does not meet the requirements. While control at the path level is indeed possible, it is not feasible at the method level.