Merge branch 'withdocs' of github.com:Akilan1999/p2p-rendering-computation into withdocs

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# Client Module
This module is incharge of communicating with the server and receiving the appropriate information back from the server.
Note: To [read more about the functions](https://pkg.go.dev/git.sr.ht/~akilan1999/p2p-rendering-computation@v0.0.0-20210404191839-6a046babcb02/client)
## Functions of the Client Module
- [Interact with the Server Api](#functions-of-the-client-module)
- [Decision maker on how the ip table is created or updated](#decision-maker-on-how-the-ip-table-is-created-or-updated)
## Interact with the Server Api
This sections talks about the functionality implemented till now.
- The client can start docker containers using the function StartContainer.
This functions calls the route:
```
http://<server IP address>:<server port>/startcontainer
```
TODO: Outputs and how it's printed
## Decision maker on how the IP table is created or updated
- Does a local speedtest to verify and see if the server IP's in the IP table
are pingable.
- Downloads the Servers IP table.
- Tries to ping the servers IP Table addresses.
- If it's pingable then it's added as a new entry in the IP table.
- The following steps occurs in the clients IP table.
- To ensure that the same servers are not being called to update the IP table. There is
a temporary list of IP address which have already been called in relation to updating the
IP table.
- Based on the current implementation there will 3 hops done to update the IP table.

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# Installation
Over here we will cover the basic steps to get the server and client side running.
### Install Go lang
The entire the implementation of this project is done using Go lang.
Thus, we need go lang to compile to code to a binary file.
[Instructions to install Go lang](https://golang.org/doc/install)
### Install Docker
In this project the choice of virtualization is Docker due to it's wide usage
in the developer community. In the server module we use the Docker Go API to create and
interact with the containers.
[Instructions to install docker](https://docs.docker.com/get-docker/)
[Instructions to install docker GPU](https://docs.nvidia.com/datacenter/cloud-native/container-toolkit/install-guide.html#docker)
````
Do ensure that the docker command does not need sudo to run
````
### Build Project
To set up the internal dependencies and build the entire go code
into a single binary
```
make build
```
### Test if binary works
```
./p2p-rendering-computation --help
```
#### Output:
```
NAME:
p2p-rendering-computation - p2p cli application to create and access VMs in other servers
USAGE:
p2p-rendering-computation [global options] command [command options] [arguments...]
VERSION:
1.0.0
COMMANDS:
help, h Shows a list of commands or help for one command
GLOBAL OPTIONS:
--Mode value Specifies mode of running (default: "client") [$P2P_MODE]
--ListServers List servers which can render tasks (default: false) [$LIST_SERVERS]
--CreateVM value Creates Docker container on the selected server [$CREATE_VM]
--FilePath Testing for absolute path (default: false)
--help, -h show help (default: false)
--version, -v print the version (default: false)
```
### Add command to .bashrc or .zshrc
```
export PATH=~/<Project Path>/p2p-redering-computation:${PATH}
```
#### Note: The steps on how to use the commands will be added later.

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# Testing P2P network
The objective would be to test the p2p network, and the effectiveness of updating
the ip tables. The objective of would be to give the impression to the client and
server of a Zero configuration setting. For testing there will be a
test network set. In the testing scenario all will be client and
server because the IP table does not store clients IP addresses. At current
number of hopes would be 3 as default.
### Test Network Scenario 1
The test network consists of 5 nodes acting as a client and server.
The objective would be to have the entire IP table Updated in each node
with interacting with only 1 node once. Each node has knowledge of
one node only.
![p2pscenario1](https://user-images.githubusercontent.com/31743758/115069627-e4aa8c80-9f04-11eb-8402-706a3407f0e8.png)
Fig 1.0 Visual Representation of testnet scenario 1
#### Result
All nodes except node 1 where able to have information of IP addresses in the test net. This was due to the reason of 3 hops
set as default. Node 1 had in it's IP table IP addresses of Node 2, Node 3, Node 4. Once the number of hops was set to 4 objective
of the test was acheived.
### Test Network Scenario 2
The second test network has a scenario of a single peer which all the
other nodes connect too. The scenario being when the other nodes
connect to the single server they download information about nodes
that have connected to the server node before.
### Testing Broadcast Module
For testing the broadcast module 2 types of servers will be
tested. One with a CPU only , another one with a CPU and GPU.
The expected result being that the appropriate results are
visible.
#### Results (CPU and GPU):
```
{
"Hostname": "akilan-Lenovo-IdeaPad-Y510P",
"Platform": "ubuntu",
"CPU": "Intel(R) Core(TM) i7-4700MQ CPU @ 2.40GHz",
"RAM": 7872,
"Disk": 937367,
"GPU": {
"DriveVersion": "390.141",
"Gpu": {
"GpuName": "GeForce GT 755M",
"BiosVersion": "80.07.A8.00.0F",
"FanSpeed": "N/A",
"Utilization": {
"GpuUsage": "N/A",
"MemoryUsage": "N/A"
},
"Temperature": {
"GpuTemp": "66 C"
},
"Clock": {
"GpuClock": "N/A",
"GpuMemClock": "N/A"
}
}
}
}
```
At the moment of the current implementation v1.0. Nvidia GPU
are only compatible. As the Go code calls the command ``nvidia-smi``
to get information about the GPU available.
#### Results (CPU only)
```
{
"Hostname": "sv-t1.small.x86-01",
"Platform": "ubuntu",
"CPU": "Intel(R) Atom(TM) CPU C2750 @ 2.40GHz",
"RAM": 7944,
"Disk": 138793,
"GPU": null
}
```
As the ``nvidia-smi`` interface was not detected it only broadcasts
the CPU specs available.
### SpeedTests
The speed test has 3 parameters which are Ping , upload and download. The tests check if
the results returned are approximately correct. The ping at the moment returns the correct
result. The upload and download returned are inccorect at the moment, This is due incorrect
implementation in for timer and will be patched in future versions.
### Unit tests
All functions implemented on the P2P module returns type error.
The units test call certain functions and check if the functions
return an error or not. This proved sufficient as the point of
the units tests was code coverage to check if certain functions
return an error.
#### Functions tested
This sections talks about the function called and represents
code coverage.
1. ``TestServer_SpeedTest``: Function called LocalSpeedTestIpTable()
2. ``TestReadIpTable``: Function called ReadIpTable()
The P2P module has a 100% code coverage in unit tests as both the unit
tests call directly or call within the function all the functions used
in the P2P module.

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# P2P (Peer to Peer module)
In this repository the P2P module has been designed from sratch at the point of this implementation.
[More about function implementation](https://pkg.go.dev/git.sr.ht/~akilan1999/p2p-rendering-computation@v0.0.0-20210404191839-6a046babcb02/p2p)
## Terminology
1. IPTable: Refers to a json file which stores information about the current servers avaliable with the speedtest results ran from the Node that triggered it.
```
{
"ip_address": [
{
"ipv4": "localhost",
"latency": 14981051,
"download": 8142.122540206258,
"upload": 3578.766512629995,
}
]
}
```
## Responsibility
- To perform speed test to determine best node to connect
- To ensure the IP table has nodes which are pingable
- Using techniques such as [UPNP](https://en.wikipedia.org/wiki/Universal_Plug_and_Play). Still under development
- Port Forwarding (To be introducted in a future release)
## Note:
If you are running in server mode it is recommended to use [DMZ](https://routerguide.net/when-and-how-to-setup-dmz-host-for-home-use/) to bypass the [NAT](https://en.wikipedia.org/wiki/Network_address_translation).

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# Problems in implementation
### Number of Devices in the network:
The current implementation has the major flaw which is that
the server has to be in port 8088 to detected in the public
network. As we know most personal networks have a single IP
address. This means we cannot have duplicate ports. A fix can
be to mention the open port on the IP table file.
(Ex: Possible feild to be added)
```
{
"ip_address": [
{
"ipv4": "localhost",
"latency": 14981051,
"download": 8142.122540206258,
"upload": 3578.766512629995,
"port": 8088
}
]
}
```
### Broadcast of container specs
At the moment the container specs are not broadcasted rather
just the machines specs and this module has yet to be tested
rigorously.
### Intergration with GPU
Certain machines have GPUs present in them which provide a
huge advantage for those who want to do rendering and certain
sort of computation. The Aim is to only allow it to be compatible
with Nvidia. But an better idea would be to provide compatability
with multiple GPU providers.

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# Table of contents
1. [Architecture](#NotImplemented)
1. [Client](Client.md)
2. [P2P](P2P.md)
3. [Server](#NotImplemented)
2. [Installation](Installation.md)
3. [Problems](Problems.md)

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Virtualization Design
======================
The virtualization tool will be treated as a separate module. In our implementation
we will use docker as it's easier to configure and set.
Methods to be created
- Build OS Image from DockerFile
- Run Image Built
- Possibility to kill image by server admin or client side user.
- Track stats of the docker container by server admin or client side user.