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Version	Chain-id	Wasm
v2.5.3	laozi-mainnet	ENABLED

Set AWS Lambda Executor

Create Lambda Function

Go to AWS Lambda, and click "Create Function"

Select :

• Select Author from Scratch.

• Create Function Name.

• Runtime Python 3.7.

• Create new user in the Permission Tab. Click Create Function

You will see this page

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Scroll down until you see Function Code Panel click Actions - Upload .ZIP file.

You can get the .zip here

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Go to Configuration - Environment variabeles - Edit

Environment variables section and add 2 environment variables: MAX_EXECUTABLE to 8192 (8 MB) and MAX_DATA_SIZE to 256.

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Go to Configuration - General Configuration - Edit Basic Settings and update the runtime configurations.

512MB RAM and 12 seconds timeout is Recommended.

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Create Trigger

Click Add Trigger - API Gateway

Then Follow like the image below

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Click "Add", And your Trigger for Lambda Executor is Ready.

Yoda Executor Configuration

# clear old yoda config, Optional
rm -rf ~/.yoda

yoda config chain-id laozi-mainnet
yoda config node http://localhost:26657 #Your Node Port
yoda config broadcast-timeout "5m"
yoda config rpc-poll-interval "1s"
yoda config max-try 5
yoda config validator $(bandd keys show wallet -a --bech val)

Add 5 REPORTER wallet

yoda keys add REPORTER_1
yoda keys add REPORTER_2
yoda keys add REPORTER_3
yoda keys add REPORTER_4
yoda keys add REPORTER_5

You can recover existing wallet with this command , and so on

yoda keys add REPORTER_1 --recover

Fund your Reporter wallet

bandd tx multi-send 1uband $(yoda keys list -a) --gas=1000000 --gas-prices=0.0025uband --gas-adjustment=1.5 --from mywallet --chain-id laozi-mainnet -y

Set the Executor Variable

Replace <EXECUTOR_URL> to yours

export EXECUTOR_URL=<EXECUTOR_URL>

If you wondering where is the Executor URL

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Set Config Executor

yoda config executor "rest:${EXECUTOR_URL}?timeout=10s"

Start Yoda using systemctl

sudo tee /etc/systemd/system/yoda.service > /dev/null << EOF
[Unit]
Description=Yoda Daemon
After=network-online.target

[Service]
User=$USER
ExecStart=$USER/go/bin/yoda run
Restart=always
RestartSec=3
LimitNOFILE=4096

[Install]
WantedBy=multi-user.target
EOF

Start Yoda

sudo systemctl daemon-reload
sudo systemctl enable yoda
sudo systemctl start yoda

Check the logs using journalctl

journalctl -fu yoda -o cat

Logs Should look like this

... systemd[...]: Started Yoda Daemon.
... yoda[...]: I[...] ⭐  Creating HTTP client with node URI: tcp://localhost:26657
... yoda[...]: I[...] 🚀  Starting WebSocket subscriber
... yoda[...]: I[...] 👂  Subscribing to events with query: tm.event = 'Tx'...

Wait for the Band Node to be synced , After Band node is synced you can add and activate your reporter Oracle with this simple command

Add Reporter wallet to Oracle

bandd tx oracle add-reporters $(yoda keys list -a) --gas=1000000 --gas-prices=0.0025uband --gas-adjustment=1.5 --from wallet --chain-id laozi-mainnet

Activate Oracle

bandd tx oracle activate --gas=1000000 --gas-prices=0.0025uband --gas-adjustment=1.5 --from wallet --chain-id laozi-mainnet

Useful Commands

Multi Send Band to Reporter wallet

bandd tx multi-send 1uband $(yoda keys list -a) --gas=1000000 --gas-prices=0.0025uband --gas-adjustment=1.5 --from mywallet --chain-id laozi-mainnet -y

Add Reporter wallet to Oracle

bandd tx oracle add-reporters $(yoda keys list -a) --gas=1000000 --gas-prices=0.0025uband --gas-adjustment=1.5 --from wallet --chain-id laozi-mainnet

Activate Oracle

bandd tx oracle activate --gas=1000000 --gas-prices=0.0025uband --gas-adjustment=1.5 --from wallet --chain-id laozi-mainnet

Check Oracle Status

bandd query oracle validator $(bandd keys show -a wallet --bech val) --chain-id laozi-mainnet

Output :

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