signoz | It helps developers monitor | Monitoring library

 by   SigNoz TypeScript Version: v0.20.2 License: Non-SPDX

kandi X-RAY | signoz Summary

kandi X-RAY | signoz Summary

signoz is a TypeScript library typically used in Performance Management, Monitoring, Kafka, Prometheus applications. signoz has no bugs, it has no vulnerabilities and it has medium support. However signoz has a Non-SPDX License. You can download it from GitHub.

Being developers, we found it annoying to rely on closed source SaaS vendors for every small feature we wanted. Closed source vendors often surprise you with huge month end bills without any transparency. We wanted to make a self-hosted & open source version of tools like DataDog, NewRelic for companies that have privacy and security concerns about having customer data going to third party services. Being open source also gives you complete control of your configuration, sampling, uptimes. You can also build modules over SigNoz to extend business specific capabilities.
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              signoz has a medium active ecosystem.
              It has 13148 star(s) with 759 fork(s). There are 111 watchers for this library.
              OutlinedDot
              It had no major release in the last 12 months.
              There are 620 open issues and 792 have been closed. On average issues are closed in 66 days. There are 64 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of signoz is v0.20.2

            kandi-Quality Quality

              signoz has no bugs reported.

            kandi-Security Security

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

            kandi-License License

              signoz has a Non-SPDX License.
              Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

            kandi-Reuse Reuse

              signoz releases are available to install and integrate.

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            signoz Key Features

            No Key Features are available at this moment for signoz.

            signoz Examples and Code Snippets

            No Code Snippets are available at this moment for signoz.

            Community Discussions

            QUESTION

            Classpath problems while Instrumenting Springboot application
            Asked 2020-Feb-17 at 21:43

            I have a springboot application which I'm trying to instrument using bytebuddy. I'm running into classpath issues which I'm not able to understand.

            Firstly, the following is other literature on this:

            https://github.com/raphw/byte-buddy/issues/473

            https://github.com/raphw/byte-buddy/issues/87

            Unable to instrument apache httpclient using javaagent for spring boot uber jar application

            https://github.com/raphw/byte-buddy/issues/109

            https://github.com/raphw/byte-buddy/issues/473

            https://github.com/raphw/byte-buddy/issues/489

            https://github.com/spring-projects/spring-boot/issues/4868

            https://github.com/alibaba/transmittable-thread-local/issues/161

            Problem is that Spring-boot bundles the application into one uber-jar, which contains other jars inside it

            A thing to note here is, that if I run the application using IntelliJ, it doesn't use the uber-jar and runs via main class with a bunch of jars as classpath arguments.

            Due to this difference, When running via uber-jar(java -jar target/demo-0.0.1-SNAPSHOT.jar), some classes are not available at the time the Agent runs. The classes are loadable at the time of application main, as spring-boot uses its own classloader, which is created at some time b/w agent and application main methods.

            I'll describe the behaviour at various points of time below:

            At time of PreMain of Agent
            • Thread.currentThread().getContextClassLoader() = Launcher$AppClassLoader
            • Agent.class.classLoader = Launcher$AppClassLoader
            • Class.forName("org.springframework.web.servlet.HandlerAdapter") => ClassNotFoundException
            • Class.forName("javax.servlet.http.HttpServletRequest") => ClassNotFoundException

            Both spring and javax classes are not loaded as they are not directly in the classpath as per the App Classloader. It's part of an inner jar, something like app.jar!/BOOT-INF/lib/some.jar App Classloader won't be able to load this.

            At time of Main of Application Class
            • Thread.currentThread().getContextClassLoader() = org.springframework.boot.loader.LaunchedURLClassLoader
            • DemoApplication.class.classloader = same as above
            • Class.forName("org.springframework.web.servlet.HandlerAdapter") => loads successfully
            • Same for javax class, loads successfully.

            After loading, Class.forName("javax.servlet.http.HttpServletRequest").classLoader is also the same LaunchedURLClassLoader.

            At the time of builder.visit call (when bytebuddy is modifying the class definitions) Code:

            I have two classes, SpringBootInterceptor (which contains the intercept method) and SpringBootInterceptorOne (which contains the entry and exit method)

            ...

            ANSWER

            Answered 2020-Feb-17 at 21:43

            The problem is that the advice class will be loaded on the system class loader as a part of the agent whereas the actual application code is loaded on a sub-class loader that is not visible to the system class loader. This situation does not change if you load your agent on the boot loader either. Therefore, the agent cannot load the HttpServletRequest class which is part of the uber-jar.

            This is a typical problem with agents and Byte Buddy has a standard way to circumvent it by using a Transformer.ForAdvice instance instead of using the Advice class directly. Byte Buddy then creates a virtual class loader hierarchy that considers classes represented by both class loaders.

            Update: The problem is that you are calling down to your interceptor that is defined in the system class loader where the class in question is not available. The annotated code will be inlined but the invoked method will not. If you copy-pasted the code into the annotated method, the behavior is as you'd expect it. Byte Buddy uses the annotated code as template and reuses a lot of information emitted by javac to guarantee a speedy conversion. Therefore, the library cannot simply copy the method and should rather feed the entire method body to javac.

            Source https://stackoverflow.com/questions/60237664

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

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            You can download it from GitHub.

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          • HTTPS

            https://github.com/SigNoz/signoz.git

          • CLI

            gh repo clone SigNoz/signoz

          • sshUrl

            git@github.com:SigNoz/signoz.git

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