Setup Wai Middleware request logger to drop (not log) some requests
I have an app where the Nginx reverse proxy is making a lot of requests to my health
endpoint. I'd like to not log these at all so my output logs are smaller. I'm also logging everything as JSON using Network.Wai.Middleware.RequestLogger.JSON
, which has a function to format log messages as JSON.
One thing I could do is log an empty bytestring, but I was thinking there may be some way to no-op the log call. I can't figure out how to do that from looking at the various RequestLogger
functions in wai-extra
.
Does anyone have a recommendation for how to build a custom Middleware
in order to not-log certain requests?
haskell haskell-wai
add a comment |
I have an app where the Nginx reverse proxy is making a lot of requests to my health
endpoint. I'd like to not log these at all so my output logs are smaller. I'm also logging everything as JSON using Network.Wai.Middleware.RequestLogger.JSON
, which has a function to format log messages as JSON.
One thing I could do is log an empty bytestring, but I was thinking there may be some way to no-op the log call. I can't figure out how to do that from looking at the various RequestLogger
functions in wai-extra
.
Does anyone have a recommendation for how to build a custom Middleware
in order to not-log certain requests?
haskell haskell-wai
1
This might be useful: hackage.haskell.org/package/filter-logger
– Chris Stryczynski
Jan 3 at 10:32
add a comment |
I have an app where the Nginx reverse proxy is making a lot of requests to my health
endpoint. I'd like to not log these at all so my output logs are smaller. I'm also logging everything as JSON using Network.Wai.Middleware.RequestLogger.JSON
, which has a function to format log messages as JSON.
One thing I could do is log an empty bytestring, but I was thinking there may be some way to no-op the log call. I can't figure out how to do that from looking at the various RequestLogger
functions in wai-extra
.
Does anyone have a recommendation for how to build a custom Middleware
in order to not-log certain requests?
haskell haskell-wai
I have an app where the Nginx reverse proxy is making a lot of requests to my health
endpoint. I'd like to not log these at all so my output logs are smaller. I'm also logging everything as JSON using Network.Wai.Middleware.RequestLogger.JSON
, which has a function to format log messages as JSON.
One thing I could do is log an empty bytestring, but I was thinking there may be some way to no-op the log call. I can't figure out how to do that from looking at the various RequestLogger
functions in wai-extra
.
Does anyone have a recommendation for how to build a custom Middleware
in order to not-log certain requests?
haskell haskell-wai
haskell haskell-wai
edited Jan 8 at 13:50


Christophe Strobbe
1,42011023
1,42011023
asked Jan 2 at 23:23


erewokerewok
5,42422234
5,42422234
1
This might be useful: hackage.haskell.org/package/filter-logger
– Chris Stryczynski
Jan 3 at 10:32
add a comment |
1
This might be useful: hackage.haskell.org/package/filter-logger
– Chris Stryczynski
Jan 3 at 10:32
1
1
This might be useful: hackage.haskell.org/package/filter-logger
– Chris Stryczynski
Jan 3 at 10:32
This might be useful: hackage.haskell.org/package/filter-logger
– Chris Stryczynski
Jan 3 at 10:32
add a comment |
1 Answer
1
active
oldest
votes
I created a custom formatter in the following way:
-- | Wai Application Middleware logger
jsonRequestLogger :: IO Middleware
jsonRequestLogger = mkRequestLogger
$ def { outputFormat = CustomOutputFormatWithDetails dontLogHealthEndpoint }
dontLogHealthEndpoint :: OutputFormatterWithDetails
dontLogHealthEndpoint date req status responseSize duration reqBody response =
if B.isInfixOf "health" $ rawPathInfo req
then toLogStr B.empty
else formatAsJSON date req status responseSize duration reqBody response
This seems to work fine. However, I'd still like to know if there's a better way.
add a comment |
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f54014475%2fsetup-wai-middleware-request-logger-to-drop-not-log-some-requests%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
I created a custom formatter in the following way:
-- | Wai Application Middleware logger
jsonRequestLogger :: IO Middleware
jsonRequestLogger = mkRequestLogger
$ def { outputFormat = CustomOutputFormatWithDetails dontLogHealthEndpoint }
dontLogHealthEndpoint :: OutputFormatterWithDetails
dontLogHealthEndpoint date req status responseSize duration reqBody response =
if B.isInfixOf "health" $ rawPathInfo req
then toLogStr B.empty
else formatAsJSON date req status responseSize duration reqBody response
This seems to work fine. However, I'd still like to know if there's a better way.
add a comment |
I created a custom formatter in the following way:
-- | Wai Application Middleware logger
jsonRequestLogger :: IO Middleware
jsonRequestLogger = mkRequestLogger
$ def { outputFormat = CustomOutputFormatWithDetails dontLogHealthEndpoint }
dontLogHealthEndpoint :: OutputFormatterWithDetails
dontLogHealthEndpoint date req status responseSize duration reqBody response =
if B.isInfixOf "health" $ rawPathInfo req
then toLogStr B.empty
else formatAsJSON date req status responseSize duration reqBody response
This seems to work fine. However, I'd still like to know if there's a better way.
add a comment |
I created a custom formatter in the following way:
-- | Wai Application Middleware logger
jsonRequestLogger :: IO Middleware
jsonRequestLogger = mkRequestLogger
$ def { outputFormat = CustomOutputFormatWithDetails dontLogHealthEndpoint }
dontLogHealthEndpoint :: OutputFormatterWithDetails
dontLogHealthEndpoint date req status responseSize duration reqBody response =
if B.isInfixOf "health" $ rawPathInfo req
then toLogStr B.empty
else formatAsJSON date req status responseSize duration reqBody response
This seems to work fine. However, I'd still like to know if there's a better way.
I created a custom formatter in the following way:
-- | Wai Application Middleware logger
jsonRequestLogger :: IO Middleware
jsonRequestLogger = mkRequestLogger
$ def { outputFormat = CustomOutputFormatWithDetails dontLogHealthEndpoint }
dontLogHealthEndpoint :: OutputFormatterWithDetails
dontLogHealthEndpoint date req status responseSize duration reqBody response =
if B.isInfixOf "health" $ rawPathInfo req
then toLogStr B.empty
else formatAsJSON date req status responseSize duration reqBody response
This seems to work fine. However, I'd still like to know if there's a better way.
answered Jan 3 at 4:41


erewokerewok
5,42422234
5,42422234
add a comment |
add a comment |
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f54014475%2fsetup-wai-middleware-request-logger-to-drop-not-log-some-requests%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
1
This might be useful: hackage.haskell.org/package/filter-logger
– Chris Stryczynski
Jan 3 at 10:32