kandi X-RAY | zap Summary
kandi X-RAY | zap Summary
Blazing fast, structured, leveled logging in Go.
Top functions reviewed by kandi - BETA
zap Key Features
zap Examples and Code Snippets
Trending Discussions on zap
I created a logger with
kubebuilder, it is based on zap logger:
ANSWERAnswered 2022-Mar-17 at 18:11
Better answer: as suggested by @Oliver Dain, use
zap.AtomicLevel. See their answer for details.
The relevant docs:
LevelEnabler decides whether a given logging level is enabled when logging a message.
LevelEnablerFunc is a convenient way to implement zapcore.LevelEnabler with an anonymous function.
That function may then return
false based on some other variable that changes at runtime:
I am experiencing performance problems with a large (wide and long) table that uses a UDF that has variables passed as structured references.
It seems that when a structured reference for a specific cell, eg "[@A]" is passed to the UDF, it flags the whole column, ie "[A]" as dirty and every cell in the column the UDF references is recalculated (this is the source of the performance problem).
I have found that if I change the UDF within the table to use cell address, eg "A2", then the UDF only executes when that cell changes.
To test, create a simple function with debug.print to highlight when it is run:...
ANSWERAnswered 2022-Feb-07 at 14:40
How can I access the full information about the logging event in uber-zap's hooks?
For example, I am trying to add a
zapcore.Field to the logging event, but it does not show up in the
If it is not possible, can I at least have the fully-formatted string somehow? The goal is to send an email/automated message/Sentry/etc in case of errors....
ANSWERAnswered 2022-Jan-23 at 13:43
Fields are not available in Zap hooks. The docs of
zap.Hooks say this explicitly:
[...] Hooks are useful for simple side effects, like capturing metrics for the number of emitted logs. More complex side effects, including anything that requires access to the Entry's structured fields, should be implemented as a zapcore.Core instead. [...]
So to dump logs with go-spew, you need a custom core. You have two main options.Custom core with custom encoder
This has the advantage of allowing more customization.
The entry's fields are available in
zapcore.Encoder.EncodeEntry. The strategy is, as usual, to embed a
zapcore.Encoder into your struct and reimplement
(based on this question: Uber Zap Logger: how to prepend every log entry with a string)
I replaced the Encoder of my uber-zap logger with a custom one to prepend every log entry with a SystemD-friendly error level (
), but now after I use the logger with additional fields (
With(fields ...Field)), the custom prepending is gone:
ANSWERAnswered 2021-Dec-28 at 07:33
You have to also implement
Clone() from the
zapcore.Encoder interface. If you wish to keep the parent logger unaltered, you have to construct an actual clone — possibly with the same config, so you might want to store it as a field:
I am using my app as a SystemD service and need to prepend every message with an entry level
for JournalD like:
ANSWERAnswered 2021-Dec-28 at 07:09
You can use a custom encoder that embeds a
Embedding the encoder gives you the implementation of all methods "for free" with the same configuration you have now. Then you can implement only
EncodeEntry with the additional logic you require.
NOTE: You still have to implement
Clone() if you plan to use structured logging, e.g.
logger.With(). More info: Why custom encoding is lost after calling logger.With in Uber Zap?
Back to your main question, this is a working example; see the comments in code for additional explanation:
Based off the configurations for
zap.NewProductionConfig(), I've assumed that zap writes logs to
stderr. However, I can't seem to capture the output in unit tests.
I have the following
ANSWERAnswered 2021-Dec-18 at 13:13
zapcore.NewTee. In your unit tests, you instantiate a logger whose core is comprised of your own highly modified core and the observed core tee'd together. The observed core will receive the log entries, so you can assert that single fields are what you expect (level, message, fields, etc.)
But I didn't write anything in the OpenAPI doc about how 404s are handled. Obviously I can't write an infinite number of bad end points & document that they return 404s.
What is the right way to record this in the OpenAPI yaml or json?
Here is a minimal yaml file... I know for sure that this file does say anything about 404, ie. 404s aren't in the contract so tools are complaining that 404s are valid responses, but 404 is what a site should return when a resource is missing...
ANSWERAnswered 2021-Dec-10 at 14:11
This has been proposed already but not implemented: https://github.com/OAI/OpenAPI-Specification/issues/521
In the comments someone gave a suggestion: https://github.com/OAI/OpenAPI-Specification/issues/521#issuecomment-513055351, which reduces a little your code, but you would still have to insert N*M entries for N paths * M methods.
Since we don't have the ability to make the specification change to our needs, all that remains is we adapting ourselves.
From your profile, you seem to be a windows user. You can for example, create a new explorer context menu to your
.yaml files (Add menu item to windows context menu only for specific filetype, Adding a context menu item in Windows for a specific file extension), and make it run a script that auto-fills your file.
Here, an example python script called
yamlfill404.py that would be used in the context call in a way like
path/to/pythonexecutable/python.exe path/to/python/script/yamlfill404.py %1, where
%1 is the path to the file being right clicked.
I am using AWS SES for mail service. Following the package "github.com/aws/aws-sdk-go/service/ses"
using this I found that HTML data is passing as a string
in one of my scenario i want to show year dynamically.. means now i want to show 2021 next year 2022 in mail footer section...
ANSWERAnswered 2021-Nov-19 at 18:55
I have a command for
zap-api-scan.py, but unlike
zap-full-scan.py, there seems to be no way to limit these.
via OWASP's official docker image:...
ANSWERAnswered 2021-Nov-09 at 00:34
I have spent the whole day trying to get my anroid app to sign in using firebase. But no turtorial solved my problem.
I have a firebase Project, and the SHA1 was updated.
I used this code here
The exception only says login faild. I thougt the problem might be the pre installed google app on the emulator, so I tried it on another device, didn't help. I wiped the data on all emulators, didn't help.
What else could I try? Did you have the same problem, how did you solve it?
ANSWERAnswered 2021-Nov-15 at 07:23
This solved the problem link
The problem is a bug in the Firebase API, this is only a workaround.
It took me only a few days...
No vulnerabilities reported
In contexts where performance is nice, but not critical, use the SugaredLogger. It's 4-10x faster than other structured logging packages and includes both structured and printf-style APIs. When performance and type safety are critical, use the Logger. It's even faster than the SugaredLogger and allocates far less, but it only supports structured logging. See the documentation and FAQ for more details.
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