This project implements a testing process from the state of hardfork being disabled to being enabled.

1. Build Axon from source code

   cd $your_workspace
   git clone https://github.com/axonweb3/axon.git
   cd axon
   cargo build

2. Start multiple Axon nodes
   reset.sh is used to clear data and start axon nodes. You can also use it for the first-time startup.

   cd axon-hardfork-test
   bash reset.sh $your_workspace/axon

   You should see an output similar to this following:

   No process found listening on port 8001
   No process found listening on port 8002
   No process found listening on port 8003
   No process found listening on port 8004
   hardforks = ["None"]
   node_1 height: 6
   node_2 height: 6
   node_3 height: 6
   node_4 height: 6
   {
     "jsonrpc": "2.0",
     "result": {},
     "id": 1
   }
   {
     "jsonrpc": "2.0",
     "result": {},
     "id": 2
   }
   {
     "jsonrpc": "2.0",
     "result": {},
     "id": 3
   }
   {
     "jsonrpc": "2.0",
     "result": {},
     "id": 4
   }
   

3. Enable hardfork
   hardfork.sh enables the hardfork by default after 30 blocks.

   bash hardfork.sh $your_workspace/axon

   You should see an output similar to this following:

   axon_path: /Users/sunchengzhu/tmp/axon
   hardfork-start-number: 694
   Killing processes on port 8001: 9285
   Killing processes on port 8002: 9286
   Killing processes on port 8003: 9287
   Killing processes on port 8004: 9288
   node_1 height: 670
   node_2 height: 670
   node_3 height: 670
   node_4 height: 670
   {
     "jsonrpc": "2.0",
     "result": {
       "Andromeda": "determined"
     },
     "id": 1
   }
   {
     "jsonrpc": "2.0",
     "result": {
       "Andromeda": "determined"
     },
     "id": 2
   }
   {
     "jsonrpc": "2.0",
     "result": {
       "Andromeda": "determined"
     },
     "id": 3
   }
   {
     "jsonrpc": "2.0",
     "result": {
       "Andromeda": "determined"
     },
     "id": 4
   }
   

4. Get the nodes' hardfork info again
   Until you see the return of "Andromeda": "enabled".

   node_ids=(1 2 3 4)
   for id in "${node_ids[@]}"; do
     port=$((8000 + id))
     url="http://127.0.0.1:${port}"
     curl_command="curl -sS -X POST ${url} -H 'Content-Type: application/json' -d '{\"jsonrpc\":\"2.0\",\"method\":\"axon_getHardforkInfo\",\"params\":[],\"id\":"$id"}' | jq"
     eval "${curl_command}"
   done

5. Get the nodes' current metadata

   for id in "${node_ids[@]}"; do
     port=$((8000 + id))
     url="http://localhost:${port}"
     curl_command="curl -sS -X POST ${url} -H 'Content-Type: application/json' --data '{\"jsonrpc\":\"2.0\",\"method\":\"axon_getCurrentMetadata\",\"params\":[],\"id\":"$id"}' | jq '.result.consensus_config.max_contract_limit'"
     eval "${curl_command}"
   done

6. Verify max_contract_limit configuration: 0x6000(24576)

   npx hardhat test --grep "deploy a big contract larger than max_contract_limit"

7. Select a node, for example node_2, to update the max_contract_limit

   npx hardhat test --grep "update max_contract_limit"

8. Get the nodes' current metadata again
   You'll see that max_contract_limit has been changed to 0x8000.

9. Verify max_contract_limit configuration: 0x8000(32768)

   npx hardhat test --grep "deploy a big contract smaller than max_contract_limit"