kandi X-RAY | logrus Summary
kandi X-RAY | logrus Summary
Logrus is a structured logger for Go (golang), completely API compatible with the standard library logger. Logrus is in maintenance-mode. We will not be introducing new features. It's simply too hard to do in a way that won't break many people's projects, which is the last thing you want from your Logging library (again...). This does not mean Logrus is dead. Logrus will continue to be maintained for security, (backwards compatible) bug fixes, and performance (where we are limited by the interface). I believe Logrus' biggest contribution is to have played a part in today's widespread use of structured logging in Golang. There doesn't seem to be a reason to do a major, breaking iteration into Logrus V2, since the fantastic Go community has built those independently. Many fantastic alternatives have sprung up. Logrus would look like those, had it been re-designed with what we know about structured logging in Go today. Check out, for example, Zerolog, Zap, and Apex. Seeing weird case-sensitive problems? It's in the past been possible to import Logrus as both upper- and lower-case. Due to the Go package environment, this caused issues in the community and we needed a standard. Some environments experienced problems with the upper-case variant, so the lower-case was decided. Everything using logrus will need to use the lower-case: github.com/sirupsen/logrus. Any package that isn't, should be changed. To fix Glide, see these comments. For an in-depth explanation of the casing issue, see this comment.
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Trending Discussions on logrus
I'm trying to implement pgxpool in a new go app. I keep getting a "pool closed" error after attempting a scan into a struct.
The pgx logger into gives me this after connecting. I thought the pgxpool was meant to remain open.
Here is my router code...
ANSWERAnswered 2022-Feb-25 at 01:02
It appears that you are doing something like the following:
With v1 of the SDK i could use logrus for my custom logger, like:...
ANSWERAnswered 2022-Jan-29 at 10:55
It seems that sdk v2 offers a func wrapper to satisfy logging.logger:
I'm trying to compare the behavior of
go mod tidy (and the resulting content of go.sum) to the output of
go list -m all.
Reading the docs, I understand go.sum contains the whole list of dependent modules declared in go.mod and in dependencies' go.mod files,
go list -m all shows the modules really loaded during the execution.
As an example, an application including logrus and prometheus like this:
ANSWERAnswered 2022-Jan-12 at 17:09
Yes, it correct to say the modules really "used" by the application are listed by
go list -m all (as per documentation you provided the link of). By "used", it means the package selected at build time for the compilation of the go code of your application.
We had a similar issue with a static analysis tool and we had to change the configuration to use the output of
go list -m all (dumped in a file) instead of
logrus for logging in golang. I use the following statements for logging.
ANSWERAnswered 2022-Jan-07 at 07:58
Hook that will check if entry has
severity field set and if not insert default value. Attach that hook to either default global or your own logger.
You can limit hook to fire only on entries on
logrus.ErrorLevel by including only that level in return value of
I have a
main.go file that I use to run an app that starts a server that exposes a port where I can run endpoints from. I was trying to dockerise it and got as far as making working containers that hold the app and the db, but I still seem to have to run
go run main.go after running
docker-compose up -d.
ANSWERAnswered 2022-Jan-03 at 20:42
Please, change the following line in the
I'm trying to create a dockerfile for my go server but it keeps failing as it does not recognize some local dependencies (they are modules on the code itself, not external dependencies).
ANSWERAnswered 2021-Dec-02 at 22:41
ADD ./src . - that copies the contents of
src to the current folder, stripping away the
It should just be
COPY . ./
Also note that it's not recommended to have a
src subfolder in your source tree - the folder that contains
go.mod is already the source tree.
I need to log relatively heavy JSON data within the web request handler. Does the logrus use blocking I/O? Should I call the
logger.WithFields(fields).Info(heavy_message) in a separate goroutine?
ANSWERAnswered 2021-Nov-17 at 18:04
https://github.com/sirupsen/logrus/blob/79c5ab66aa2ce7d9ff7b3c437ebc22fcc519a967/entry.go#L221-L262 it looks like it is blocking i/o, so yes - you should call it in a goroutine.
I use logrus and lumberjack for log file on macOS....
ANSWERAnswered 2021-Nov-01 at 11:20
Based on the stated behaviour, I assume this is happening on an OS which implements POSIX-compatible behaviour for files (so it's running on some kernel with Unix heritage — such as *BSD or Linux, — or it's a Mac OS system).
On these systems, removing a file from a file system does nothing to that file's storage on that file system — as long as it is opened in at least a single running process.
Specifically, to cite the POSIX documentation on
If the link count of the file is 0, when all file descriptors associated with the file are closed, the space occupied by the file shall be freed and the file shall no longer be accessible.
Having a file open is considered to increment its link count by 1, and removing a file from its filesystem is the same as decrementing that link count by 1.
You might read more about link counts here.
Supposedly the logging package you're using keep the log file opened, and so what happens is that you merely remove the file's name from the filesystem's directory it was it, but this does not in any way affect the logging process.
Moreover, the process which has the file open is not notified when any of the file names goes away (on Unix-like systems a file might have many names at the same time—read about hard links).
Typically for Unix-like OSes is to have a way to explicitly ask the process to re-open its log file(s).
SIGUSR1 signal is used for this, so you could setup a handler (via
signal.Notify) to setup a handler for such a signal and then make your log rotation code to
kill -USR1 the running process to tell it re-open the log file, which will be recreated.
Of course, more involved schemes could be implemented as you can use any form of IPC to communicate that command to your running process.
I would like to dynamically load config file and not restart my Go app. I wrote the below files, which runs but has data race.
ANSWERAnswered 2021-Aug-25 at 04:20
vipe.WatchConfig() and set
vipe.OnConfigChange with a function it is also locking
Because you already called
vipe.WatchConfig() and then it started to call
vipe.OnConfigChange in separate go routine. it is also try to acquire the same lock. That's why there is a race condition.
vipe.WatchConfig() after setting the
vipe.OnConfigChange and after release the lock.
It should be corrected as below.
TLDR: I am looking for a way to update headers on an open stream for each call to
stream.Send(msg) without closing the stream and opening a new one.
I have a GRPC client and server built to handle bidirectional streams. To authenticate with the server the client must send a JWT in the request headers, set as "authorization". The token is valid for 30 minutes. After the token has expired, the server will terminate the connection.
I am looking for a way to refresh my authorization token from the client, and keep the stream open. The client should run in a loop executing a new request every 30 minutes with the updated token, and the updated payload. I have not seen a way to update a header from the client side for an already opened stream.
Let's look at some code to get an idea of what the client side looks like. The code below has a function to create a new instance of the client, and another function to establish the connection to the GRPC server....
ANSWERAnswered 2021-Oct-20 at 18:15
Headers are sent at the beginning of an RPC, and cannot be updated during the RPC. If you need to send data during the life of a stream, it needs to be part of the request message in your proto definition.
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