da7805282c
Go through the resource broker for node candidates again. Ask for >= x, <= 2*x when we have requirement x (for cpu, memory). This gives us some flexibility in case no image precisely fulfills the requirements, but rules out nodes that are outrageously big. Change-Id: I35d0b4207b2b76b212f5e584f932b8aaf579a0e9
The NebulOuS optimizer controller
This module serves two purposes:
-
When a new NebulOuS application is started, set up the initial optimizer infrastructure, parse the application structure and metric model, and pass an initial resource configuration (“Optimized Service Graph”) to the Deployment Manager.
-
When an application is running, monitor the application-specific metrics coming in via ActiveMQ and invoke the optimizer as needed, thereby possibly triggering application reconfigurations.
The nebulous-requirements-extractor library
This library offers the utility class KubevelaAnalyzer that extracts
component requirements from KubeVela files. This code is used both in the
optimiser-controller and in other components of the NebulOuS optimiser.
The library will be built and deployed automatically as part of the build process of the optimiser-controller.
Building
To compile, install a JDK (Java Development Kit) version 17 or greater on the build machine.
# Compile:
./gradlew assemble
# Compile and test:
./gradlew build
Building the container
A container can be built and run with the following commands:
docker build -t optimiser-controller -f Dockerfile .
docker run --rm optimiser-controller
Running
To run, install a JRE (Java Runtime Environment) version 17 or greater.
A successful build creates the jar file dist/optimiser-controller-all.jar.
This file is self-contained and can be executed via the following command:
java -jar optimiser-controller/dist/optimiser-controller-all.jar
Running in jshell
The command ./gradlew --console plain jshell opens a REPL (read-eval-print
loop) with the package eu.nebulous.optimiser.controller pre-imported. On
the REPL, one can write Java snippets such as:
SalConnector conn = new SalConnector(new URI("http://localhost:8088"));
conn.isConnected();
For command-line editing and history support, use the rlwrap command:
rlwrap ./gradlew --console plain jshell.