https://github.com/okeuday/odroid_fish

Make service requests swim!
https://github.com/okeuday/odroid_fish

cloudi microservice python

Last synced: about 1 month ago
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Make service requests swim!

• Host: GitHub
• URL: https://github.com/okeuday/odroid_fish
• Owner: okeuday
• Created: 2015-04-04T20:31:21.000Z (almost 10 years ago)
• Default Branch: master
• Last Pushed: 2023-10-27T22:34:05.000Z (about 1 year ago)
• Last Synced: 2023-10-27T23:26:36.439Z (about 1 year ago)
• Topics: cloudi, microservice, python
• Language: Python
• Homepage:
• Size: 494 KB
• Stars: 0
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.markdown

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README

        
Odroid-C1 Fish for [CloudI](http://cloudi.org)

==============================================

Use [`odroid_display`](https://github.com/okeuday/odroid_display/) to

display CloudI service requests as UTF8-art fish on a 16x2 (blue) LCD display.

This is mainly for demonstration purposes and was inspired by

[https://github.com/lericson/fish](https://github.com/lericson/fish)

(which is also in Python).

4 Odroid-C1 CloudI nodes are used to demonstrate both local and remote

service request communication, with the "lake" configuration

(Odroid-C1 node positions with 16x2 LCD displays) as:

    

    (node 2)        (node 0)

    

    (node 3)        (node 1)

    

The separate CloudI configuration files for each node are provided

along with the fish.py Python CloudI service.

Details

-------

Each UTF8 fish contains the node integer that created the fish, so the

node integer follows the fish in the LCD display as it swims to other nodes.

The types of fish are shown below (for node 0):

    >0)°>       bass

    >←0{{·>     salmon

    >←0[[[[θ>   carp

The fish are JSON data sent within CloudI service requests, with a timeout

that determines the lifetime of the fish.  Separate service requests

manage the hatchery and view updates with regular "tick" intervals.

The 16x2 LCD display also provides 7 status LEDs below the LCD.  These LEDs

are toggled whenever a view update comes from a specific node

(so a view update from node X toggles LED #X on the destination node Y).

Once a fish's position crosses a node boundary, the fish's service request

passes to the remote node (as shown at the end of `FishState.__render_move`).

The internal time kept within the fish's JSON data is reset before the send

to a remote node, since it is assumed that there is no clock synchronization

in-place.

Running CloudI with the provided configurations on the 4 Odroid-C1s

(not including a Netgear GS108 Gigabit Switch) consumes a total of ~14 watts.

Example

-------

![](https://raw.githubusercontent.com/okeuday/odroid_fish/master/fishbowl.gif)

Install (Node 0)

----------------

    cd ~

    mkdir src

    cd src

    git clone https://github.com/CloudI/CloudI.git

    cd CloudI/src

    ./autogen.sh && CLOUDI_ARG_NODE_NAME_SHORT=odroid CLOUDI_ARG_NODE_COOKIE=odroid ./configure --with-cxx-backtrace --with-boost-libdir=/usr/lib/arm-linux-gnueabihf/ && ./make_dev

    sudo ./make_dev install

    cd ../../

    git clone https://github.com/hardkernel/wiringPi.git

    cd wiringPi

    ./build

    cd ..

    git clone https://github.com/okeuday/odroid_display.git

    cd odroid_display/src

    make

    cd ../../

    git clone https://github.com/okeuday/odroid_fish.git

    sudo mv -f /usr/local/etc/cloudi/cloudi.conf /usr/local/etc/cloudi/cloudi.conf.old

    sudo cp -f odroid_fish/odroid0_cloudi.conf /usr/local/etc/cloudi/cloudi.conf

    # make sure /etc/hostname and /etc/hosts allow the nodes to find each other

    # (i.e., change "odroid" to "odroid0" and add IP addresses for 1-3)

    sudo cloudi start

Author

------

Michael Truog (mjtruog at protonmail dot com)

License

-------

MIT License

Thematic Inspiration

--------------------

[![Find The Fish (1983)](http://img.youtube.com/vi/UGBZnfB46es/0.jpg)](https://www.youtube.com/watch?v=UGBZnfB46es "Find The Fish (1983)")