swimos / traffic

Massively real-time traffic streaming application

Traffic

See Traffic in action.

Prerequisites

• Install JDK 11+.

  • Ensure that your JAVA_HOME environment variable is pointed to your Java installation location.
  • Ensure that your PATH includes $JAVA_HOME.

• Install Node.js.

  • Confirm that npm was installed during the Node.js installation.

Run

Windows

Install the Windows Subsystem for Linux.

Execute the command ./run.sh from a console pointed to the application's home directory. This will start a Swim server, seeded with the application's logic, on port 9001.

 user@machine:~$ ./run.sh

*nix

Execute the command ./run.sh from a console pointed to the application's home directory. This will start a Swim server, seeded with the application's logic, on port 9001.

 user@machine:~$ ./run.sh

View the UI

Open the following URL on your browser: http://localhost:9001.

Run as a Fabric

Run two Swim instances on your local machine to distribute the applications Web Agents between the two processes.

# Build the UI
server $ ./build.sh

# Start the first fabric node in one terminal window:
server $ ./gradlew run -Dswim.config.resource=server-a.recon

# Start the second fabric node in another terminal window:
server $ ./gradlew run -Dswim.config.resource=server-b.recon

When both processes are up and running, you can point your browser at either http://localhost:9008 (Server A) or http://localhost:9009 (Server B). You will see a live view of all Web Agents, regardless of which server you point your browser at. Swim transparently demultiplexes links opened by external clients, and routes them to the appropriate server in the fabric.

traffic's Issues

Gauges not redrawing correctly

Look at these examples of gauges not drawing correctly.
Browser: Safari
Machine: Mac 14" M1 Chip

Problem is in full screen mode

Seems ok not in full screen

Enhance run.sh to fail with clear error if npm not installed

User Story
As a developer I want run.sh to fail if npm is not installed or fails rather than just continue along.

Acceptance Criteria

1. Fail if any command fails instead of blindly continuing
2. Specifically check for NPM install and NPM working and give clear error message

Error loading resources for ui from https://cdn.swim.ai/js/3.9.0/swim-core.js

Cannot run the traffic app, getting errors on resources from swim.ai in the browser.

Failed to load resource: A server with the specified hostname could not be found.
https://cdn.swim.ai/js/3.9.0/swim-core.js

Update project to use swim v4.0.0-dev.20230923