microservices | Small project containing a microservices test | Continuous Deployment library

 by   damoresa Java Version: Current License: No License

kandi X-RAY | microservices Summary

kandi X-RAY | microservices Summary

microservices is a Java library typically used in Devops, Continuous Deployment, Spring Boot, Docker applications. microservices has no bugs, it has no vulnerabilities, it has build file available and it has high support. You can download it from GitHub.

This Github repository features a small microservices sample, using the following libraries:.
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            kandi-support Support

              microservices has a highly active ecosystem.
              It has 10 star(s) with 12 fork(s). There are 2 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              microservices has no issues reported. There are no pull requests.
              It has a positive sentiment in the developer community.
              The latest version of microservices is current.

            kandi-Quality Quality

              microservices has 0 bugs and 0 code smells.

            kandi-Security Security

              microservices has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              microservices code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              microservices does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
              OutlinedDot
              Without a license, all rights are reserved, and you cannot use the library in your applications.

            kandi-Reuse Reuse

              microservices releases are not available. You will need to build from source code and install.
              Build file is available. You can build the component from source.
              Installation instructions are not available. Examples and code snippets are available.
              microservices saves you 1059 person hours of effort in developing the same functionality from scratch.
              It has 2401 lines of code, 86 functions and 105 files.
              It has low code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed microservices and discovered the below as its top functions. This is intended to give you an instant insight into microservices implemented functionality, and help decide if they suit your requirements.
            • Create a new author
            • Generate an error with the given code and message
            • Converts an Author DTO to an Object
            • Create a new book
            • Convert BookDTO to a BookDTO
            • Get a specific book
            • Convert a BookDTO to a BookDTO
            • List of releases
            • Converts a release model to a release DTO
            • Gets the users
            • Converts an Author to an Author object
            • Convert a release DTO to a Release Object
            • Delete a book
            • Delete an author
            • Gets a list of all books
            • Gets an author
            • Get Book by ISBN
            • Returns the default author with the given book
            • Update an existing book
            • Update an existing author
            • Initialize the books
            Get all kandi verified functions for this library.

            microservices Key Features

            No Key Features are available at this moment for microservices.

            microservices Examples and Code Snippets

            No Code Snippets are available at this moment for microservices.

            Community Discussions

            QUESTION

            How do you do GRPC authentication in an istio mTLS setup?
            Asked 2021-Jun-15 at 14:41

            I have bunch of GRPC microservices and they are using self signed certs. I add authentication info to the GRPC channel which is then used to identify endpoints and provide right services.

            Now I want migrate to Istio mTLS.

            In phase one, I got Istio to BYPASS all GRPC connections and my services works as it is now.

            In Phase two, I want to hand off TLS to Istio, but I am stuck on how to pass the authentication information to GRPC?

            How do you handle auth in Istio mTLS setup?

            GRPC can support other authentication mechanisms Has anyone used this to inject Istio auth info to GRPC? any other suggestions on how you implemented this in your setup

            I am using go-lang just in case if this can be useful to provide any additional information.

            Thanks

            ...

            ANSWER

            Answered 2021-Jun-11 at 09:21

            One way of doing this is using grpc.WithInsecure(), this way you don't have to add certificates to your services, since istio-proxy containers in your pods will TLS terminate any incoming connections.

            Client side:

            Source https://stackoverflow.com/questions/67929723

            QUESTION

            Start multiple node microservices with single command in windows
            Asked 2021-Jun-15 at 10:54
            Start multiple node servers with single command on windows operating system with help of batch file (.bat)

            let's assume this is my folder structure with all microservices and all package.json have start, dev and test scripts defined.

            ...

            ANSWER

            Answered 2021-Jun-15 at 10:54
            Save this file as run.bat on project-root directory

            Source https://stackoverflow.com/questions/67858333

            QUESTION

            How to secure reliable publication when send event about successful db insertion to Event Hub?
            Asked 2021-Jun-11 at 19:52

            Context:

            1. In Azure function with EventHubTrigger, I save data mapped from handled event to database (through the Entity framework). This action performs synchronously
            2. Trigger a new event about successful data insertion using event hub producer. This action is async
            3. Handle that triggered event at some other place

            I guess it might happen that something fails during saving data, so I am wondering how to prevent inconsistency and secure that event is not sent if it should not. As far as I know Azure Event Hub has no outbox pattern implemented yet, so I guess I would need to mimic it somehow.

            I am also thinking about alternative and a bit smelly solution to make this publish event method synchronous in step 2 (even if nature of the event-driven is to be async) and to add an addition check between step 1 and step 2 - to make sure that everything is saved in db. Only if that condition is fulfilled, event is going to be triggered (step 3).

            Any advice?

            ...

            ANSWER

            Answered 2021-Jun-11 at 19:52

            There's nothing in the SDK that would manage distributed transactions on your behalf. The simplest approach would likely be having a column in your database that allows you to mark when the event was published, and then have your function flow:

            1. Write to the database with the "event published" flag unset; on failure abort.
            2. Publish the event; on failure abort. (the data stays in written)
            3. Write to the database to set the "event published" flag.

            You'd need a second Function running on a timer that could scan your database for rows older than XX minutes ago that still need an event, which then do steps 2 and 3 from your initial flow. In failure scenarios, you will have some potential latency between the data being written and the event published or may see duplicate events. (Event Hubs has an at least once guarantee, so you'll need to be able to handle duplicates regardless.)

            Source https://stackoverflow.com/questions/67936348

            QUESTION

            Configure AWS Elastic Beanstalk instance to use 2 subnets
            Asked 2021-Jun-11 at 13:38

            I have 3 AWS Elastic Beanstalk instances which are running Spring microservices. All microservices are making POST requests to each other and using RDS service for database.

            Should I isolate database traffic and microservices traffic into separate subnets? In case it's a good practice is it possible to assign 2 private network IP's for each subnet for every AWS Elastic Beanstalk instance?

            ...

            ANSWER

            Answered 2021-Jun-09 at 01:46

            It's not a good practice to directly communicate between instances in EB. The reason is that that EB instances run in autoscalling group. So they can be terminated and replaced at any time by AWS leading to change in their private Ip addresses.

            The change in IP will break your application sooner or later. Instances in EB should be accessed using Load Balancer or private IP.

            So if you have some instances that are meant for private access only you could separate them to internal EB environment.

            Source https://stackoverflow.com/questions/67863341

            QUESTION

            do databases not exist under event stores (like kafka)? Do we not query data from databases anymore?
            Asked 2021-Jun-08 at 18:04

            Trying to understand event driven microservices; like in this video. It seems like the basic idea is "producers create tasks that change the state of a system. Consumers read all relevant tasks (from whatever topic they care about) and make decisions off that"

            So, if I had a system of jars- say a red, blue, and green jar (topics). And then had producers adding marbles to each jar (deciding color based on random number, let's say). The producers would tell kafka "add a marble to red. Add a marble to blue... etc" Then, the consumers, every time we wanted to count jars would get the entire log and say "ok, a marble was added to red, so redCount++, then a marble was added to blue so blueCount++..." for the dozens/hundreds/thousands of lines that the log file takes up?

            That can't be correct; I know it can't be correct. It seems incredibly inefficient; almost anti-efficient!

            What am I missing in my knowledge of kafka tasks?

            ...

            ANSWER

            Answered 2021-Jun-08 at 16:06

            The data in each of those topics will be retained as per a property log.retention.{hours|minutes|ms}. At the Kafka server level, this is set to 7 days by default for all topics. You could change this at a topic level as well.

            In such a setting, a consumer will not be able to read the entire history if it needed to, so in this instance typically a consumer would:

            1. consume the message i.e. "a marble no. 5 was added to red jar" at offset number 5
            2. carry out the increment step i.e. redCount++ and store the latest information (redCount = 5) in a local state store
            3. Then commit the offset back to Kafka telling that it has read the message at offset number 5
            4. Then, just wait for the next message...

            If however, your consumer doesn't have a local state store - In this case, you would need to increase the retention period i.e. log.retention.ms=-1 to store the data forever. You could configure the configure the consumers to store that information locally in memory but in the event of failures there would be no choice but for the consumers to read from the beginning. This I agree is inefficient.

            Source https://stackoverflow.com/questions/67889719

            QUESTION

            Devart/EFCore Permanent failure if First Query attempted while DB server is unavailable
            Asked 2021-Jun-08 at 05:40

            We have several microservices built on top of aspnetcore and entity framework and using the MySQL EntityFramework connector from Devart. I've noticed that if the first query that any of our applications attempts fails due to the data store being inaccessible, then the failure seems to be cached, and when the DB is finally alive, the exception is still returned to the user code.

            As part of the diagnosis of this problem I tried disabling the database when the application is running and in this situation the application appears to be able to recover once the DB is available again, so I suspect the problem is related to a connection that may be cached during model initialisation.

            I've also tried disabling the service provider caching and this also lets the application recover but at the cost of having to initialise the service provider each time, so this can't be used in our application but lends weight to the idea that the error is related to some form of caching.

            Has anyone else had/seen this problem before? What was your solution?

            Here is a stack trace for context:

            ...

            ANSWER

            Answered 2021-Apr-15 at 17:09

            QUESTION

            Extending Laravel/Lumen Query Builder to automagically add SQL comments
            Asked 2021-Jun-06 at 16:39

            I use a large RDS database instance that is shared among several different projects (not microservices to be exact) and this database's performance is critical. Hence I monitor the queries whenever support team raise tickets related to performance of our services. So in order for me to track where each query originated from i.e, which app, file and line number, I want to automatically add a SQL comment for all queries. So when I call toSql() on the query builder object it must show me the comment

            ...

            ANSWER

            Answered 2021-Jun-06 at 16:39

            Overriding the Grammer class directly may be possible but it internally delegates its work to Database Specific grammer classes

            For example if you have configured Mysql in config/database.php then the Grammer class delegates the work on to Illuminate\Database\Query\Grammars\MySqlGrammar

            Similarly for Postgres it will be Illuminate\Database\Query\Grammars\PostgresGrammar

            Based on the database config the ConnectionFactory[src/Illuminate/Database/Connectors/ConnectionFactory.php->createConnection()]

            loads the proper connection manager for a given database

            I am not sure if overriding of this classes is even possible or not because of the PSR-4 loading as the namespace is tightly linked with the physical location of the file in the directory tree

            So instead of that I would suggest to go for laravel macros by which you may add new functions to existing classes that use Macroable trait

            A POC example can be found below, for further advancement you are encouraged to dig the code for update, insert, delete etc in Grammer.php and Builder.php

            Source https://stackoverflow.com/questions/67858873

            QUESTION

            Ribbon load balancer client not disabling in Spring boot 2.4.3 & Cloud 2020.0.1. Using Consul for load balancing instead
            Asked 2021-Jun-06 at 15:13

            I'm currently working on a microservices application for my internship using Consul for service discovery and feign clients for communicating between the services. When we started working on the existing project which already was built using microservices, we upgraded Spring boot to 2.4.3 & cloud to 2020.0.1, so that we could make use of Java 15 to use records instead of normal classes for dtos. The problem we have now is that, whenever we make a call to a composite service, that will try to retrieve data from multiple services (for example users and teams service), that we get the following stacktrace:

            ...

            ANSWER

            Answered 2021-Jun-04 at 07:23

            Can you try excluding ribbon dependency as shown below

            Source https://stackoverflow.com/questions/67717907

            QUESTION

            Building spring boot project to docker
            Asked 2021-Jun-06 at 12:35

            I'm trying to build sample Service Registration Server using Kotlin & Gradle, when i deploy it locally using intelliJ everything works fine, but when I try to pack it up into docker and launch container I get this:

            ...

            ANSWER

            Answered 2021-Jun-06 at 12:35

            dockerfile was poorly constructed, also added main-class config for application in build.gradl.kt

            Source https://stackoverflow.com/questions/67843674

            QUESTION

            Can't expose Keycloak Server on AWS with Traefik Ingress Controller and AWS HTTPS Load Balancer
            Asked 2021-Jun-06 at 00:12

            I have successfully exposed two microservices on AWS with Traefik Ingress Controller and AWS HTTPS Load Balancer on my registered domain.

            Here is the source code: https://github.com/skyglass-examples/user-management-keycloak

            I can easily access both microservices with https url:

            ...

            ANSWER

            Answered 2021-Jun-03 at 22:30

            Right - the admin console is listening on 127.0.0.1. This is not the outside world interface. This is "localhost".

            You have two choices here. You can start Keycloak with a command line argument like:

            Source https://stackoverflow.com/questions/67828817

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

            Vulnerabilities

            No vulnerabilities reported

            Install microservices

            You can download it from GitHub.
            You can use microservices like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the microservices component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .

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