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# hived
`hived` is the second version of my personal cryptocurrency server:<br/>
* hived is currently using redis as its DB because its tiny and fast.<br/>
* It sends notifications through telegram.<br/>
Currently it has 5 endpoint:<br/>
### /price
Lets you ask for the price of the currency. You can determine the currency the value is returned in.<br/>
### /pair
Takes in a pair of currencies and a multiplier. Determines and returns the ratio.<br/>
### /alert
#### POST
Takes in a name and a math expression containing the names of the currencies. Checks the expression periodically. Sends a message over telegram when the expression holds true.<br/>
The expression's result must be boolean. As an example:<br/>
```Go
ETH*50>50000.
ETH*60/(DOGE*300000) < 4.
```
You can have as many parameters as you like. The requests for the crypto prices are all turned into individual goroutines so it's fast.<br/>
The expression evaluation is powered by [govaluate](https://github.com/Knetic/govaluate). So for a set of rules and what you can and cannot do please check the documentation over there.<br/>
#### DELETE
Deletes the key from the DB so you will no longer receive updates.<br/>
### /ex
Gets the list of currencies that are available to be traded.<br/>
You can check under `./test` for some examples of curl commands.<br/>
### /health
Returns the health status of the service.<br/>
## How to Run
Before you can run this, you need a [telegram bot token](https://core.telegram.org/bots#6-botfather) and a [changelly](https://changelly.com/) API key.<br/>
The keys are put in files and then given to Docker as secrets.The docker entrypoint script then exports these as environment variables.<br/>
```sh
TELEGRAM_BOT_TOKEN="my-telegram-bot-api-key"
```
And
```sh
CHANGELLY_API_KEY:"my-changelly-api-key"
```
And
```sh
CHANGELLY_API_SECRET:"my-changelly-api-secret"
```
If you want to use docker-compose, it's as simple as running `docker-compose up`. You just need to provide the files. You can check the file names in the docker-compose file.<br/>
Both the server itself and the redis image are alpine-based so they're pretty small.<br/>
## Gitpod
`hived` is gitpod-ready. Gitpod might need to install some go lsp tools once it is loaded. You will get prompted for those.<br/>
## Docs
You can find the swagger and postman docs under `/api`.<br/>
## TODO
* ~~fix travis~~
* add unit tests
* fix `hived -help` crashing
* haproxy-ssl-termination
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