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Market Data Feeder && Alarms Dispatcher


Market Data Feeder


Market Data Feeder is an off-chain service that collects prices from configured price providers and pushes them to the Oracle contract.

Currently only the Osmosis client is implemented.

It reads prices from the Osmosis pools: https://lcd.osmosis.zone/gamm/v1beta1/pools

Alarms Dispatcher is а service that takes care of alarms in the system.

Prerequisites

To connect to the oracle smart contract, the gRPC port on the network should be enabled.

To enable it edit the following file:

./nolus-core/networks/nolus/local-validator-1/config/app.toml

In it, go to the grpc section and set enable to true.

[grpc]
...
enable = true
...

Setup

Set some environment variables

export CHAIN_ID="nolus-Env-vXXX-XXX"
export TXFLAG="--chain-id ${CHAIN_ID} --gas auto --gas-adjustment 1.3 --fees 15000unls"

*Note: The CHAIN_ID can be found in the produced after network initiliazation 'networks' directory (./nolus-core/networks/nolus/local-validator-1/genesis.json).

Add new key to be used as Feeder

nolusd keys add feeder

The output will look like this:

- name: feeder
  type: local
  address: nolus1um993zvsdp8upa5qvtspu0jdy66eahlcghm0w6
  pubkey: '{"@type":"/cosmos.crypto.secp256k1.PubKey","key":"A0MFMuJSqWpofT3GIQchGyL9bADlC5GEWu3QJHGL/XHZ"}'
  mnemonic: "<MNEMONIC PHRASE>"

Store the mnemonic phrase as it will be needed to start the service.

Add new key to be used as Dispatcher

nolusd keys add dispatcher

Store the mnemonic phrase as it will be needed to start the service.

Register feeder address

 nolusd tx gov submit-proposal sudo-contract nolus1436kxs0w2es6xlqpp9rd35e3d0cjnw4sv8j3a7483sgks29jqwgsv3wzl4 \
 '{"register_feeder":{"feeder_address":"nolus1um993zvsdp8upa5qvtspu0jdy66eahlcghm0w6"}}' \
 --title "Register feeder" --description "Register feeder" --deposit 10000000unls --fees 900unls --gas auto --gas-adjustment 1.1 --from reserve
  • nolus1436kxs0w2es6xlqpp9rd35e3d0cjnw4sv8j3a7483sgks29jqwgsv3wzl4 - Leaser contract
  • nolus1um993zvsdp8upa5qvtspu0jdy66eahlcghm0w6 - Feeder address

Send some money to feeder account

nolusd tx bank send reserve $(nolusd keys show -a feeder) 1000000unls --fees 500unls

Send some money to dispatcher account

nolusd tx bank send reserve $(nolusd keys show -a dispatcher) 1000000unls --fees 500unls

Build services

cargo build --release

Configure service

At the root of the repository there is a directory called configurations.

In there are several files: market-data-feeder.main.toml, market-data-feeder.test.toml, market-data-feeder.dev.toml, alarms-dispatcher.main.toml ...

Depending on whether you want to run the feeder on the main-net, dev-net or the test-net, rename the corresponding file to market-data-feeder.toml/alarms-dispatcher.toml.

  • Editing the market-data-feeder.toml file:

    • When running through bash - replace all instances of entries containing a dash, e.g. osmosis-lcd, with their counterpart that uses an underscore, e.g. osmosis_lcd.
    • When desired to run without a sanity check - remove the [providers.osmosis_lcd.comparison], [comparison_providers.sanity_check] and [comparison_providers.sanity_check.ticker_mapping] sections from the configuration file.

    | Key | Value | Default | Description | |:--------------:|:----------------------------:|:-------:|:--------------------------------------------------------------------------------------------------------------------------------------------------| | [continuous] | true or false | true | if false the service will push a price only once and exit | | [tick_time] | <time in seconds> | 60 | push price on every X seconds | | [providers] | | | List of price providers. A price provider is an off-chain service that provides prices for crypto or non-crypto assets | | main_type | crypto | | currently, the only crypto provider that is implemented - Osmosis | | name | osmosis | | crypto provider type | | [oracle] | | | Oracle contract configuration | | contract_addrs | <oracle address> | | Oracle contract address | | prefix | nolus | | Nolus prefix | | chain_id | | | The ID of the chain. This property is configured in the node's configuration. E.g.: nolus-local-v1.0 | | fee_denom | unls | | Network denom | | funds_amount | | | Amount to be used for transactions | | gas_limit | | | Gas limit (Example: 500_000) |

  • Editing the alarms-dispatcher.toml file:

    • chain_id - The ID of the chain. This property is configured in the node's configuration. E.g.: nolus-local-v1.0

Environment variables configuration

There are also environment variables which are used for configuring the services.

They are as follows:

  • For feeder & dispatcher:

    • DEBUG_LOGGING Turns on debug logging when running a release build. Possible values:

      • 1
      • y (lowercase)
      • Y (uppercase)

    • GRPC_URI gRPC endpoint's URI.

  • For feeder:

    • PROVIDER_OSMOSIS_LCD_RPC_URL Osmosis' GAMM module API endpoint's URL.

    • PROVIDER_OSMOSIS_LCD_SECONDS_BEFORE_FEEDING

    • PROVIDER_OSMOSIS_LCD_MAX_DEVIATION

    • SIGNING_KEY_MNEMONIC

    • COMPARISON_PROVIDER_SANITY_CHECK_API_KEY

On local network:

Feeder:

export DEBUG_LOGGING=1 ; export JSON_RPC_URL="http://localhost:26612" ; export GRPC_URI="http://localhost:26615" ; export PROVIDER_OSMOSIS_LCD_SECONDS_BEFORE_FEEDING=0 ; export PROVIDER_OSMOSIS_LCD_MAX_DEVIATION=1000 ; export PROVIDER_OSMOSIS_LCD_RPC_URL="https://lcd.osmotest5.osmosis.zone/osmosis/poolmanager/" ;

Dispatcher:

export DEBUG_LOGGING=1 ; export JSON_RPC_URL="http://localhost:26612" ; export GRPC_URI="http://localhost:26615" ;

Start feeder service

From the same directory where market-data-feeder.toml is located:

./target/release/feeder

Start dispatcher service

From the same directory where alarms-dispatcher.toml is located:

./target/release/alarms-dispatcher

Running in Docker

Building binary

First the project has to be compiled. This has to be done whenever the codebase is changed.

The command to do so is:

docker build --rm -f Compile.Dockerfile -t compile-bots . && \
  docker run --rm -v "$(pwd):/code/" -v "$(pwd)/artifacts/:/artifacts/" \
    -v market_data_feeder_cache:/code/target/ -v cargo_cache:/usr/local/cargo/ \
    compile-bots

Building service's image

Before deploying a new version the service's image has to be rebuilt.

N.B.: Whenever the configuration file is changed, the image has to be rebuilt as it's part of the image.

Before running the command, if you are targeting the test-net, then run:

CONFIG_NAME="test"

The command to do so is the following:

  • Feeder

    docker build --rm --build-arg config_name=${CONFIG_NAME:-main} \
  -f Feeder.Dockerfile -t market-data-feeder ./artifacts/

  • Dispatcher

    docker build --rm --build-arg config_name=${CONFIG_NAME:-main} \
  -f Dispatcher.Dockerfile -t alarms-dispatcher ./artifacts/

Running service

Running the service is done through the command below, which requires you to pass the mnemonic of the key that will be used.

Note: Host addresses, ports and other configurations might change over time. These are provided as a guide.

  • Feeder - one of the following options:

    • echo $MNEMONIC | docker run -i -a stdin --add-host host.docker.internal:host-gateway \
--env 'GRPC_URI=https://rila-cl.nolus.network:9090' \
--env 'JSON_RPC_URL=https://rila-cl.nolus.network:26657' \
--env 'PROVIDER_OSMOSIS_BASE_ADDRESS=https://osmo-test-cl.nolus.network:1317/osmosis/gamm/v1beta1/'
market-data-feeder
    
* ```shell
  cat $MNEMONIC_FILE | docker run -i -a stdin --add-host host.docker.internal:host-gateway \
  --env 'GRPC_URI=https://rila-cl.nolus.network:9090' \
  --env 'JSON_RPC_URL=https://rila-cl.nolus.network:26657' \
  --env 'PROVIDER_OSMOSIS_BASE_ADDRESS=https://osmo-test-cl.nolus.network:1317/osmosis/gamm/v1beta1/'
  market-data-feeder

    • docker run -i -a stdin --add-host host.docker.internal:host-gateway \
--env "SIGNING_KEY_MNEMONIC=$MNEMONIC" \
--env 'GRPC_URI=https://rila-cl.nolus.network:9090' \
--env 'JSON_RPC_URL=https://rila-cl.nolus.network:26657' \
--env 'PROVIDER_OSMOSIS_BASE_ADDRESS=https://osmo-test-cl.nolus.network:1317/osmosis/gamm/v1beta1/'
market-data-feeder

  • Dispatcher - one of the following options:

    • echo $MNEMONIC | docker run -i -a stdin --add-host host.docker.internal:host-gateway \
--env 'GRPC_URI=https://rila-cl.nolus.network:9090' \
--env 'JSON_RPC_URL=https://rila-cl.nolus.network:26657' \
alarms-dispatcher
    
* ```shell
  cat $MNEMONIC_FILE | docker run -i -a stdin --add-host host.docker.internal:host-gateway \
  --env 'GRPC_URI=https://rila-cl.nolus.network:9090' \
  --env 'JSON_RPC_URL=https://rila-cl.nolus.network:26657' \
  alarms-dispatcher

    • docker run -i -a stdin --add-host host.docker.internal:host-gateway \
--env "SIGNING_KEY_MNEMONIC=$MNEMONIC" \
--env 'GRPC_URI=https://rila-net.nolus.io:1318' \
--env 'JSON_RPC_URL=https://rila-net.nolus.io:26657' \
alarms-dispatcher

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v0.0.10 Latest
May 19, 2023
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