Andromeda
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K

Kernel

Introduction

The Andromeda Kernel acts as the core of the operating system.
The Kernel receives and handles packets from ADOs to be relayed to a specified recipient. The Kernel keeps track of the original sender of the message. It also verifies that the packet is sent by an Andromeda certified ADO before relaying the message.
The Kernel is also responsible for:
  • Relaying any IBC messages across any two chains that have an Andromeda Kernel deployed and a channel set up.
  • Keeping track of the other AMP ADOs such as the ADODB, VFS, and Economics.
All of our ADOs have an AMPReceive execute message to handle receiving packets from the Kernel.
The Kernels are set up by the Andromeda team on each chain. This means that as a regular user, you will not need to interact with this ADO yourself in most cases. This page serves as additional information on how it works for people that are interested into getting a deep understanding of our system.
The only only message that users will be calling is the Recover execute message that will recover IBC funds sent in case the IBC message fails.

InstantiateMsg

Rust
pub struct InstantiateMsg {
pub owner: Option<String>,
pub chain_name: String
}
Name
Type
Description
owner
Option<String>
Optional address to specify as the owner of the ADO being created. Defaults to the sender if not specified.
chain_name
String
The name of the chain we are deploying this kernel for.

ExecuteMsg

AMPReceive

Receives an AMP packet from another ADO. The packet is received, unpacked and the messages are relayed to their intended destination.
Only an AMPPkt sent from one of the Andromeda ADOs is accepted.
Rust
pub enum ExecuteMsg {
AMPReceive(AMPPkt),
}
Information about the AMPPkt struct can be found here.

Send

Constructs an AMPPkt with a given AMPMsg and sends it to the recipient.
Rust
pub enum ExecuteMsg {
Send {
message: AMPMsg,
},
}
Name
Type
Description
message
AMPMsg
The message to send.

Create

Creates an ADO with the given type and message.
Rust
pub enum ExecuteMsg {
Create {
ado_type: String,
msg: Binary,
owner: Option<AndrAddr>,
chain: Option<String>,
},
}

UpsertKeyAddress

Used to save the addresses of the AMP ADOs that the Kernel will be interacting with such as the ADODB, Economics, and VFS.
Only available to the owner of the Kernel.
Rust
pub enum ExecuteMsg {
UpsertKeyAddress {
key: String,
value: String,
}
}
Name
Type
Description
key
String
The name of the AMP ADO we want to save the address for.
value
String
The address of the ADO.

AssignChannels

Assigns a given channel between the current chain and the specified target chain. For a successfull channel to be set up, both the channel ids need to be specified.
Only available to the owner of the Kernel.
Rust
pub enum ExecuteMsg {
AssignChannels {
ics20_channel_id: Option<String>,
direct_channel_id: Option<String>,
chain: String,
kernel_address: String,
},
}
Name
Type
Description
ics20_channel_id
Option<String>
The id of the ics20 channel.
direct_channel_id
Option<String>
The direct channel id.
chain
String
The name of the target chain.
kernel_address
String
The Kernel address of the target chain.

Recover

Recovers sent IBC funds to the user in case an IBC message fails.
Rust
JSON
pub enum ExecuteMsg {
Recover {},
}
{
"recover":{}
}

RegisterUserCrossChain

Used to register a VFS username cross-chain.
This message can only be called by the VFS.
Rust
pub enum ExecuteMsg {
RegisterUserCrossChain {
username: String,
address: String,
chain: String,
},
}
Name
Type
Description
username
String
The username to be registerd.
address
String
The address on the other chain to save the username to.
chain
String
The name of the second chain.

QueryMsg

KeyAddress

Queries the address of the specified key.
Currently there are three keys that can be used: vfs : Gets the address of the VFS ADO used by the kernel.
adodb: Gets the address of the ADODB ADO used by the kernel.
economics: Gets the address of the Economics ADO used by the kernel.
Rust
JSON
pub enum QueryMsg{
#[returns(Addr)]
KeyAddress { key: String }
}
{
"key_address":{
"key":"adodb"
}
}
Name
Type
Description
key
String
The key to get the address for.
Returns the address in a string.

VerifyAddress

Checks if the specified address was created by an Andromeda ADO by checking and comparing the code_Id of the address with the code_Ids stored in the ADODB.
Rust
JSON
pub enum QueryMsg{
#[returns(bool)]
VerifyAddress { address: String },
}
{
"verify_address":{
"address":"andr1..."
}
}
Name
Type
Description
address
String
The address to check.
Returns true if the address was created by an Andromeda ADO and false otherwise.

ChannelInfo

Gets the saved channel information such as channel ids for the specified chain.
Rust
JSON
pub enum QueryMsg {
#[returns(Option<ChannelInfoResponse>)]
ChannelInfo { chain: String }
}
{
"channel_info":{
"chain":"juno"
}
}
Name
Type
Description
chain
String
The name of the chain to get the channel information for.

ChannelInfoResponse

pub struct ChannelInfoResponse {
pub ics20: Option<String>,
pub direct: Option<String>,
pub kernel_address: String,
pub supported_modules: Vec<String>,
}
Name
Type
Description
ics20
Option<String>
The ics20 id.
direct
Option<String>
The direct channel id.
kernel_address
String
The kernel address of the specifed chain.
supported_modules
Vec<String>
A list of supported modules by the specified chain.

Recoveries

Gets any fund recoveries available for the specified address.
Rust
JSON
pub enum QueryMsg {
#[returns(Vec<::cosmwasm_std::Coin>)]
Recoveries { addr: Addr },
}
}
{
"recoveries":{
"addr":"andr1..."
}
}
Name
Type
Description
addr
Addr
The address to check recoveries for.
Returns a Vec<Coin> containing the recoverable funds.