loki | Loki是由Andrei编写的一个与《Modern C | Application Framework library

by lokicui C++ Version: Current License: Apache-2.0

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | loki Summary

loki is a C++ library typically used in Server, Application Framework, Framework applications. loki has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

Loki是由Andrei编写的一个与《Modern C++ Design》（C++设计新思维）一书配套发行的C++代码库。它不仅把C++模板的功能发挥到了极致，而且把类似设计模式这样思想层面的东西通过库来提供。本篇文章介绍如何利用Loki来轻松地实现一些设计模式。由于Loki使用了大量牛X到爆的模板技巧，对编译器的要求是很苛刻的，官方兼容列表里只列出了VC7.1以上版本及GCC3.4以上版本。如果你象我一样喜欢用C++Builder6或VC6，可以去下载《Modern C++ Design》配套源码，那里面的Loki提供了对其它不兼容编译器的移植代码，只是版本低了一点，有些接口有些差别。 Loki的下载地址是0.1.7，后面的代码都使用这个版本作为测试标准。编译 Loki库提供了N多种编译途经，你可以直接打开项目文件（VC、Code::Block、Cpp-Dev等IDE）编译，也可以用传统的makefile来make，还可以直接用批处理文件编译。象我这种被IDE惯坏的人，一般都是直接把src目录里的代码加入到项目中了事。 BTW，《Modern C++ Design》确实是一本好书，在这里也顺便推荐一下^_^.

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Quality

Security

License

Reuse

Support

loki has a low active ecosystem.

It has 19 star(s) with 24 fork(s). There are 2 watchers for this library.

It had no major release in the last 6 months.

loki has no issues reported. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of loki is current.

Quality

loki has 0 bugs and 0 code smells.

Security

loki has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

loki code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

loki is licensed under the Apache-2.0 License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

loki releases are not available. You will need to build from source code and install.

It has 23851 lines of code, 15 functions and 333 files.

It has low code complexity. Code complexity directly impacts maintainability of the code.

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loki Key Features

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loki Examples and Code Snippets

No Code Snippets are available at this moment for loki.

Community Discussions

Trending Discussions on loki

Reverse the d3-hierarchy (d3-tree) graph to left side to show downstream as well

Regex, Grafana Loki, Promtail: Parsing a timestamp from logs using regex

Loki behind https ingress configuration with helm

How to sort 500-511 HTTP errors in a file produced daily on Grafana using Loki as Datasource

I'm trying to set the score from list but flutter is showing me null safety issue

Remove a part of a log in Loki

Regex for promtail config

How to build a Loki server Docker image using Docker-compose

what expression should I use to output two metrics in grafana from prometheus

How to create alert for logged errors?

QUESTION

Reverse the d3-hierarchy (d3-tree) graph to left side to show downstream as well

Asked 2022-Apr-17 at 13:52

I have two sets of data one for upstream and one for downstream. Both upstream and downstream have same master node of John.

Upstream data

...

ANSWER

Answered 2022-Apr-17 at 13:25

I've adapted my answer to this question so it suits your data structure.

This method has key steps:

Remember that for a horizontal layout you flip x and y...
Compute both tree layouts for upstream and downstream
Make the root nodes have the same x and y
Re-compute the y coordinate for every node such that the root is in the center and the downsteam branches work leftward and the upstream branches work right-ward.
Draw both trees

If you skip step 3 then you end up with this (where red is upstream and green is downstream):

So to flip this around so that the downstream tree is in the left-hand side and the upstream tree is on the right-hand side (and the root is centered) :

We need to halve the y coordinate (which is it's x) of the upstream node and add half of the innerWidth. For the root this puts in the centre, but for the descendants it puts them proportionally on the right hand side:

Source https://stackoverflow.com/questions/71900796

QUESTION

Regex, Grafana Loki, Promtail: Parsing a timestamp from logs using regex

Asked 2022-Apr-03 at 17:39

I want to parse a timestamp from logs to be used by loki as the timestamp.
Im a total noob when it comes to regex.

The log file is from "endlessh" which is essentially a tarpit/honeypit for ssh attackers.

It looks like this:

...

ANSWER

Answered 2022-Apr-03 at 17:39

You could for example create a specific pattern to match the first part, and capture the second part:

Source https://stackoverflow.com/questions/71726895

QUESTION

Loki behind https ingress configuration with helm

Asked 2022-Mar-28 at 18:44

Is there any way to configure promtail to send logs to loki via https-ingress?

promtail ---> https-ingress ---> loki

I used this helm chart promtail and configured loki url as http://gateway.loki.monitoring.example.com:80/loki/api/v1/push. After I deploy promtail chart I see below errors in promtail pod

...

ANSWER

Answered 2022-Mar-28 at 18:44

After I played some time, I understood I need to remove port and specify https for the loki URL. Should be like below

Source https://stackoverflow.com/questions/71649098

QUESTION

How to sort 500-511 HTTP errors in a file produced daily on Grafana using Loki as Datasource

Asked 2022-Mar-24 at 14:12

How to grep for only 500 errors (500-511) in a file that is created daily with date stamp in file name. These files are configured to be pushed by promtail agent to Loki server so I can visualize them on Grafana. The files are being produced daily and this is an example of the file sss2022-03-16.txt. I would like to count and visualise this on grafana only the 500-511 HTTP errors for file produced each day.

On Grafana Loki I tried doing this {job="cbas-dev-logs"} |= "500|501|502|503|504|505|506|507|508|509|510|511" but that didn't grep specifically only the 500s HTTPs

Below you can see an example of the file sss2022-03-16.txt

10.32.10.181 ignore 19 Feb 2022 00:26:04 GMT 10.32.10.44 GET / HTTP/1.1 500 73 N 0 h 10.32.26.124 ignore 19 Feb 2022 00:26:06 GMT 10.32.10.44 GET / HTTP/1.1 501 73 N 0 h 10.32.42.249 ignore 19 Feb 2022 00:26:27 GMT 10.32.10.44 GET / HTTP/1.1 500 73 N 1 h 10.32.10.181 ignore 19 Feb 2022 00:26:34 GMT 10.32.10.44 GET / HTTP/1.1 302 73 N 0 h 10.32.26.124 ignore 19 Feb 2022 00:26:36 GMT 10.32.10.44 GET / HTTP/1.1 503 73 N 1 h 10.32.26.124 ignore 19 Feb 2022 00:26:36 GMT 10.32.10.44 GET / HTTP/1.1 502 73 N 1 h 10.32.26.124 ignore 19 Feb 2022 00:26:36 GMT 10.32.10.44 GET / HTTP/1.1 502 73 N 1 h 10.32.26.124 ignore 19 Feb 2022 00:26:36 GMT 10.32.10.44 GET / HTTP/1.1 504 73 N 1 h 10.32.26.124 ignore 19 Feb 2022 00:26:36 GMT 10.32.10.44 GET / HTTP/1.1 511 73 N 1 h 10.32.26.124 ignore 19 Feb 2022 00:26:36 GMT 10.32.10.44 GET / HTTP/1.1 508 73

...

ANSWER

Answered 2022-Mar-24 at 14:12

your query selects not only HTTP statuses 5XX but all lines that contains 500-511 number. Try one of the solutions below:

Solution-1: try to use more specific query like this one :

Source https://stackoverflow.com/questions/71493961

QUESTION

I'm trying to set the score from list but flutter is showing me null safety issue

Asked 2022-Mar-22 at 06:39

I can't get rid of null safety and whenever I run this code it shows me that you're trying to expect List but you get List. Actually, I'm new here, so the way I'm asking might not be good..... but I really need to solve this problem...Thankx

This is answer file (answer.dart):

...

ANSWER

Answered 2022-Mar-22 at 06:39

var _questions = [
    {
      "questionText":
          "What year was the first Iron Man movie released, kicking off the Marvel Cinematic Universe?",
      "answerText": [
        {"text": "2005", "score": 5},
        {"text": "2008", "score": 6},
        {"text": "2010", "score": 7},
        {"text": "2012", "score": 8},
      ]
    }
];

Source https://stackoverflow.com/questions/71566695

QUESTION

Remove a part of a log in Loki

Asked 2022-Mar-21 at 10:18

I have installed Grafana, Loki, Promtail and Prometheus with the grafana/loki-stack.

I also have Nginx set up with the Nginx helm chart.

Promtail is ingesting logs fine into Loki, but I want to customise the way my logs look. Specifically I want to remove a part of the log because it creates errors when trying to parse it with either logfmt or json (Error: LogfmtParserErr and Error: JsonParserErr respectively).

The logs look like this:

...

ANSWER

Answered 2022-Feb-21 at 17:57

Promtail should be configured to replace the string with the replace stage.

Here is a sample config that removes the stdout F part of the log for all logs coming from the namespace ingress.

Source https://stackoverflow.com/questions/71210935

QUESTION

Regex for promtail config

Asked 2022-Mar-04 at 22:04

I've been struggling to get a regex string working. It's being used for Promtail to parse labels from my logs. The problem I'm having is it's not working with positive lookahead (because I think promtail is written in go?)

Anyway the logs are web logs and here are a few examples:

...

ANSWER

Answered 2022-Mar-04 at 22:04

EDIT

Try this! (?P((?:[0-9]{1,3}\.){3}[0-9]{1,3})).+(?P(GET|POST|HEAD|PUT|DELETE|CONNECT|OPTIONS|TRACE|PATCH)).(?P(/endpoint[1-3]?(?:\/health|\/optimize)?))?.+\".(?P([0-9]{3}))

https://regex101.com/r/DKqRpL/1

if there are going to be endpoints that include numbers other than 1-3 or subsequent routing other than health or optimize this will need to be edited, but as of now this is your fix bud

Source https://stackoverflow.com/questions/71357043

QUESTION

How to build a Loki server Docker image using Docker-compose

Asked 2022-Feb-23 at 08:16

I have created a directory and mounted all the required files in each directory but when I try to create the docker image, It creates Promtail and Grafana but the LOKI wouldn't create. I get the error message below;

ERROR: for 9c35c983e8e4_cbxs_loki_1 Cannot start service loki: Mounts denied: You can configure shared paths from Docker -> Preferences... -> Resources -> File Sharing.

I have mounted the files just as the order containers.. Please help

docker-compose.yml

Please see the file on the link below https://docs.technotim.live/posts/grafana-loki/

...

ANSWER

Answered 2022-Feb-09 at 10:55

You have defined a volume mount for /var/log in your container, but most likely don't have this defined in Docker Desktop (under Docker -> Preferences... -> Resources -> File Sharing). You are probably best off removing this volume definition from the compose file, unless you actually want to read these logs on your Mac.

Source https://stackoverflow.com/questions/71045993

QUESTION

what expression should I use to output two metrics in grafana from prometheus

Asked 2022-Feb-15 at 18:55

I installed a test cluster using Minikube. Also I've installed Prometheus, Grafana & Loki using helm chart. I want to output two metrics, but I don't know how. First metric is half done, but for some reason, it is not output if you put the mount point "/", and I need the metric itself with it, which is needed:

Percentage of free disk space — mount point ‘/’, exclude tmpfs
...

ANSWER

Answered 2022-Feb-15 at 18:55

I solved the problem on my own first metric they did not change it, since there is no such mountpoint /

second metric count(kube_pod_info{pod=~".apiserver.",namespace=".."})

Source https://stackoverflow.com/questions/71091363

QUESTION

How to create alert for logged errors?

Asked 2022-Feb-15 at 14:04

I have a stream of log messages in Loki, and I want to create an alert if error is logged.

Here is the query I wrote for the alert

...

ANSWER

Answered 2022-Feb-15 at 14:04

You have to reduce the query first and set the right alert condition. Documentation: https://grafana.com/docs/grafana/latest/alerting/unified-alerting/alerting-rules/create-grafana-managed-rule/):

Source https://stackoverflow.com/questions/70951564

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Install loki

You can download it from GitHub.

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