Nebula | powerful framwork for building highly concurrent | Microservice library

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

kandi X-RAY | Nebula Summary

kandi X-RAY | Nebula Summary

Nebula is a C++ library typically used in Architecture, Microservice applications. Nebula has no bugs, it has a Permissive License and it has low support. However Nebula has 1 vulnerabilities. You can download it from GitHub.

Nebula is a flexible, high-performance business-oriented IoC distributed network framework developed in C++ language, designed for production environments. It supports multiple application layer communication protocols including proto3, http, https, http2, grpc, cassandra, and websocket. Nebula makes it easy to deploy a fast and high-performance distributed service with C++, while keeping the same server architecture and APIs. NebulaBootstrap provides out-of-the-box integration with Nebula service, but can be easily extended to serve other types of application. Nebula is a production level framework and distributed solution project for instant messaging, data collection, real-time computing, message push and other applications, as well as web api services. There were production applications for instant messaging, data acquisition and real-time analysis on line now, and a recommendation engine application for a large user base will be born soon. By the way, using Nebula for toy-level projects is also good for learning network communication. Bwar welcomes more developers to join the Nebula project. Nebula can be used as a single high-performance TCP server, but building a cluster based on Nebula will be truly reflect its value. In order to build distributed service clusters quickly, Nebula Bootstrap cluster solutions including various types of services have been developed.
Support
    Quality
      Security
        License
          Reuse

            kandi-support Support

              Nebula has a low active ecosystem.
              It has 469 star(s) with 137 fork(s). There are 34 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 3 open issues and 8 have been closed. On average issues are closed in 132 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of Nebula is current.

            kandi-Quality Quality

              Nebula has 0 bugs and 0 code smells.

            kandi-Security Security

              Nebula has 1 vulnerability issues reported (0 critical, 1 high, 0 medium, 0 low).
              Nebula code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              Nebula 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.

            kandi-Reuse Reuse

              Nebula releases are not available. You will need to build from source code and install.
              Installation instructions are not available. Examples and code snippets are available.

            Top functions reviewed by kandi - BETA

            kandi's functional review helps you automatically verify the functionalities of the libraries and avoid rework.
            Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of Nebula
            Get all kandi verified functions for this library.

            Nebula Key Features

            No Key Features are available at this moment for Nebula.

            Nebula Examples and Code Snippets

            No Code Snippets are available at this moment for Nebula.

            Community Discussions

            QUESTION

            Get list of files containing string(s) or pattern(s)
            Asked 2022-Feb-27 at 23:15

            Is there a Gradle pattern for retrieving the list of files in a folder or set of folders that contain a given string, set of strings, or pattern?

            My project produces RPMs and is using the Nebula RPM type (great package!). There are a couple of different kinds of sets of files that need post-processing. I am trying to generate the list of files that contain the strings that are the indicators for post-processing. For example, files that contain "@doc" need to be processed by the doc generator script. Files that contain "@HOSTNAME@" and "@HOSTFQDN@" need to be processed by sed to replace the strings with the actual host name or host fqdn.

            The search root in the package will be src\main\resources. With the result the build script sets up the post-install script commands - something like:

            ...

            ANSWER

            Answered 2022-Feb-27 at 23:15

            I'm having difficulty finding the filter for any of the regular Gradle 'things' (i.e., FileTree) that operate on contents of files rather than names of files.

            You can apply any filter you can imagine on a Gradle file tree, in the end it is just Groovy (or Kotlin) code running in the JVM. Each Gradle FileTree is nothing more than a (lazily evaluated) collection of Java File objects. To filter those File objects, you can read their content, e.g. in the same way you would read them in Java. Groovy even provides a JDK enhancement for the Java class File that includes the simple method getText() for this purpose. Now you can easily filter for files that contain a certain string:

            Source https://stackoverflow.com/questions/71193701

            QUESTION

            Wrong result calculation Hour angle from altitude azimuth
            Asked 2022-Feb-04 at 16:31

            I am making a Javascript program and on of the functions is to convert altitude/azimuth to right-ascension/declination given a time and latitude. My code can find the declination fairly accurately, I checked with Stellarium. I have been using this site to help me with the math.

            My program gives me the wrong value for horizontal ascension which I plan on using to find right ascension (I already have a function to find local sidereal time which works). Here is my code for the equation
            var ha = asin(-sin(az)*cos(alt) / cos(dec)) * (180 / Math.PI); this code is in Javascript but I defined custom sin/cos/asin functions that take degrees as input and return radians because that is the form my data is in.

            The site I use also says that this equation should give the same result
            var ha = acos((sin(alt) - sin(lat)*sin(dec)) / (cos(lat) * cos(dec))) * (180 / Math.PI);
            but, the two equations give different results and neither are correct according to stellarium. I have checked that all the variables I am putting in are correct and I am almost certain I entered the equation correct. Here is the full code on github. I need help figuring out how to fix this problem.
            --Note this can be run with node js with no libraries The result I get is { ra: [ 23, 57, 37.9 ], dec: [ -5, 24, 38.88 ] }
            It should be getting { ra: [ 5, 36, 22.6 ], dec: [ -5, 24, 38.88 ] it does not have to be exact, I only really care about the first number of ra (right ascension). It is also formatted in HMS format. The datetime is hardcoded to Febuary 1st 2022 12:00:00 so that is what you should set stellarium to if you are testing this out.

            Here is the relevant code

            ...

            ANSWER

            Answered 2022-Feb-04 at 02:02

            Give the following a try. Notable changes include:

            • Specified 'GMT+0000' when establishing J2000.0 date, in addition to the date being passed in to altazToradec(). Otherwise, new Date() returns local time.

            • Sourced calculation of 'DEC' and 'HA' from MathWorks.com (look under the "Functions" tab).

            • NOTE: 'HA' and 'RA' are in degrees, not hours. To convert to hours, multiply by (24 hrs / 360 deg), or simply divide by (15 deg / hr).

            • Sourced sample data from StarGazing.net.

            Source https://stackoverflow.com/questions/70977467

            QUESTION

            HTML buttons and event listeners
            Asked 2022-Jan-03 at 13:51

            I wanted to make a dynamic table view where a button was clicked to reveal a Table Row however, I get an error when I try to change the text of the button.

            ...

            ANSWER

            Answered 2022-Jan-03 at 13:48

            Suggestions:

            • Use "display" style, instead of "visibility", to don't let the space occupied on the page when it's not visible;
            • It's not good idea have multiple elements with the same id (like "info"), because that breaks the rules of HTML;
            • To show and hide, use read directly info from css, instead of use a auxiliary variable;
            • The document.getElementsByTagName returns an object, not an array. The way to navigate is using the classic way.

            Next, your code with some fixes:

            Source https://stackoverflow.com/questions/70555917

            QUESTION

            Use of spring-boot-starter jars triggers lint warnings
            Asked 2021-Dec-03 at 17:42

            I have a springboot project that we got going quickly by using the various appropriate spring-boot-starter jars to bring in the appropriate transitive dependencies that we needed. Now, as we get closer to production launch, we are adding code-quality and code-inspection tools to tighten up loose ends. Some of these are tagging the starter jars as problematic, but I am finding inconsistent advice as to how to handle the problem.

            Spring.io documentation fails to weigh in on this. Starters are described here: Spring Starters, but it really just says they are used to "get going quickly" but does not indicate that they are intended for use in production. The starters are not listed in the 'production ready' features (which focuses on Actuator). The Packaging for Production makes no mention of starters. From Spring documentation alone, you are encougaged to use the starters (to get going quickly), but are not told to, or told not to, use them in production.

            If the spring project adds either gradle-lint plugin, or uses maven-dependency-plugin, use of the starters flags problems. The starters include no code themselves, but they pull in useful transitive dependencies (by design), but that's contra-indicated by the lint plugins. Related incident here

            From gradle-lint Generally, applications only use a subset of the libraries included in such families. The unnecessary dependencies included with the family both increase the footprint of the application itself. If the 'application' is actually itself a library, these unnecessary dependencies leak downstream to its users, increasing their footprint and potentially introducing breaking version conflict resolution problems.

            Is the "right" answer to remove starter jars before going live? Should starters be used in production? I am sure there are plenty of projects that have gone to production with starters, and probably they have done so successfully. But it looks to me like the authorities differ on what to do, so looking to reconcile them.

            ...

            ANSWER

            Answered 2021-Dec-03 at 17:42

            I think this is likely to be closed as it's opinion based. Speaking as a member of the Spring Boot team, the starters are absolutely intended for use in production. There's no point in something that gets you going quickly if it then creates more work later on. Some people dislike relying on transitive dependencies indirectly and believe that all dependencies that you require should be declared directly. I think the linting tools you've mentioned are enforcing this opinion. You can either configure the tool to quieten it or manually declare the starters' dependencies. I would do the former.

            Source https://stackoverflow.com/questions/70218357

            QUESTION

            Angular header to overlap my bootstrap carousel
            Asked 2021-Nov-13 at 09:38

            I currently have a header with a bootstrap carousel under the header. I want to make it so the header sits on top of the carousel so that when I make the header transparent it shows the images of the carousel through my header. Any input on this would be greatly appreciated and I have provided the code below.

            app.component.html

            ...

            ANSWER

            Answered 2021-Nov-13 at 09:38

            I found a solution by adding a position: absolute; and a z-index: 1; to my header component.

            Source https://stackoverflow.com/questions/69951709

            QUESTION

            Connect Google VPC to database hosted on Scaleway using Scaleway RPN
            Asked 2021-Nov-03 at 15:02

            I have on my hand :

            • an Airflow instance created using Google Composer in a VPC
            • a postgres database on Scaleway protected by Nebula Mesh with a configurated RPN

            My goal is to connect Airflow with the postgres Database.

            My first thought was to create a NAT Gateway with Nebula mesh running on the router with associated certificates to use the ssl connection. But if I understand everything right, I can't install Nebula on the Google's CloudNAT/CloudRouter. I would need to create a NAT Proxy VM myself, which I guess isn't the simpliest idea.

            Another idea was to "connect the VPC" to the Scaleway RPN using RPN VP allowing me to bypass Nebula. But I'm not sure how to do so, I tried creating a CloudVPN but something went wrong in the process and I didn't catch any pong.

            Can anyone hint me on the right process to solve my problem ? What would be the easiest way to do it ? I'm not fluent yet with cloud platform and networking, so I'm kinda lost in the heavy documentation !

            Thank's in advance

            ...

            ANSWER

            Answered 2021-Nov-03 at 15:02

            It looks like cloud-vpn only supports IPsec and is not compatible with the OpenVPN protocol used by Scaleway's RPN-VPN.

            To do a site-to-site vpn connection you'll need one of those:

            • cloud-vpn compatible ipsec gateway on a Scaleway server connected to RPN v1
            • a custom gateway connected on gcp with an openvpn client to RPN-VPN

            Source https://stackoverflow.com/questions/69756008

            QUESTION

            Wordpress function.php wp_enqueue_script doesn't work
            Asked 2021-Oct-13 at 09:45

            I'm trying to integrate jquery into my wordpress theme. I have integrated this code into my function.php but it doesn't work. Can anyone see the problem? Thanks.

            ...

            ANSWER

            Answered 2021-Oct-13 at 09:45

            Your Enqueue is wrong. Your enqueue script says that a script named 3.3.2 is a dependency and won't load your script unless it finds a script by that handle.

            Source https://stackoverflow.com/questions/69552696

            QUESTION

            Could not determine the dependencies of task ':app:lintVitalRelease'. Can't generate signed APK
            Asked 2021-Sep-28 at 04:25

            Recently I added some kotlin activities and a library project to current java project. I can run project without any problem. clean - build - rebuild - run all are ok.

            the problem appears when generating signed APK. I get below error:

            ...

            ANSWER

            Answered 2021-Sep-28 at 04:25

            I found the solution, thanks to @Fabio. The problem was in buildTypes structure. so, in app level I have release and build, but in library level I have release and debug.

            I changed buildTypes in library level like this to be same like in app level:

            Source https://stackoverflow.com/questions/69354035

            QUESTION

            NEWB ALERT Nav Bar issue in which the section below is covering the navbar. Also need help learning to forms section limitst
            Asked 2021-Sep-22 at 05:29

            Goodevening all.I am having trouble implementing my first bootstrap Nav bar. I have gotten it to succesfully work but my section that's right below it is overlaping the navbar (Im only able to see the navbar if i use a z-index of -1 but then the buttons in that section do not work). I have tried to change the heigh/width through css but am limited to how small I can make the section.

            This is the problem i'm having: https://imgur.com/a/3CwLnK3

            1st problem: You can see how the hero section goes over into the next area. Also how do i limit the margin on padding/margin on left and right of Hero section? I tried to adjust in css but it would not let me.

            2nd problem: you can see how the img which is in the services section is not resizing itself to stay within the boxes (stars)

            ...

            ANSWER

            Answered 2021-Sep-22 at 05:09

            The code is fine but consider changing the following styles

            1. Remove left:425px for the .icon img this will fix the star image alignment issue
            2. Remove top:-49px for the .container this will fix the menu overlap issue
            3. Remove height: 50px for the .hero

            Here is the updated code

            Source https://stackoverflow.com/questions/69278337

            QUESTION

            Find UPPERCASE names that end with a colon
            Asked 2021-Aug-15 at 17:27

            Find UPPERCASE names that start with either a letter or digits. Could include digits, hyphens, periods and spaces with colon at end of name.

            ...

            ANSWER

            Answered 2021-Aug-15 at 17:27

            Try this pattern: ([A-Z0-9][A-Z0-9. -]+)(?=:\B)

            See Regex101 Demo

            Source https://stackoverflow.com/questions/68793763

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

            Vulnerabilities

            No vulnerabilities reported

            Install Nebula

            You can download it from GitHub.

            Support

            The complete documentation for Nebula is available: Nebula class reference.
            Find more information at:

            Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items

            Find more libraries
            CLONE
          • HTTPS

            https://github.com/Bwar/Nebula.git

          • CLI

            gh repo clone Bwar/Nebula

          • sshUrl

            git@github.com:Bwar/Nebula.git

          • Stay Updated

            Subscribe to our newsletter for trending solutions and developer bootcamps

            Agree to Sign up and Terms & Conditions

            Share this Page

            share link