chore: Add IBC module level errors (#3184) (#3273)

(cherry picked from commit 761277a)

Co-authored-by: Cian Hatton <cian@interchain.io>

internal/errors/errors.go

@@ -0,0 +1,63 @@
+package errors
+
+import (
+	errorsmod "cosmossdk.io/errors"
+
+	"github.com/cosmos/ibc-go/v7/modules/core/exported"
+)
+
+const codespace = exported.ModuleName
+
+var (
+	// ErrInvalidSequence is used the sequence number (nonce) is incorrect
+	// for the signature.
+	ErrInvalidSequence = errorsmod.Register(codespace, 1, "invalid sequence")
+
+	// ErrUnauthorized is used whenever a request without sufficient
+	// authorization is handled.
+	ErrUnauthorized = errorsmod.Register(codespace, 2, "unauthorized")
+
+	// ErrInsufficientFunds is used when the account cannot pay requested amount.
+	ErrInsufficientFunds = errorsmod.Register(codespace, 3, "insufficient funds")
+
+	// ErrUnknownRequest is used when the request body.
+	ErrUnknownRequest = errorsmod.Register(codespace, 4, "unknown request")
+
+	// ErrInvalidAddress is used when an address is found to be invalid.
+	ErrInvalidAddress = errorsmod.Register(codespace, 5, "invalid address")
+
+	// ErrInvalidCoins is used when sdk.Coins are invalid.
+	ErrInvalidCoins = errorsmod.Register(codespace, 6, "invalid coins")
+
+	// ErrOutOfGas is used when there is not enough gas.
+	ErrOutOfGas = errorsmod.Register(codespace, 7, "out of gas")
+
+	// ErrInvalidRequest defines an ABCI typed error where the request contains
+	// invalid data.
+	ErrInvalidRequest = errorsmod.Register(codespace, 8, "invalid request")
+
+	// ErrInvalidHeight defines an error for an invalid height
+	ErrInvalidHeight = errorsmod.Register(codespace, 9, "invalid height")
+
+	// ErrInvalidVersion defines a general error for an invalid version
+	ErrInvalidVersion = errorsmod.Register(codespace, 10, "invalid version")
+
+	// ErrInvalidChainID defines an error when the chain-id is invalid.
+	ErrInvalidChainID = errorsmod.Register(codespace, 11, "invalid chain-id")
+
+	// ErrInvalidType defines an error an invalid type.
+	ErrInvalidType = errorsmod.Register(codespace, 12, "invalid type")
+
+	// ErrPackAny defines an error when packing a protobuf message to Any fails.
+	ErrPackAny = errorsmod.Register(codespace, 13, "failed packing protobuf message to Any")
+
+	// ErrUnpackAny defines an error when unpacking a protobuf message from Any fails.
+	ErrUnpackAny = errorsmod.Register(codespace, 14, "failed unpacking protobuf message from Any")
+
+	// ErrLogic defines an internal logic error, e.g. an invariant or assertion
+	// that is violated. It is a programmer error, not a user-facing error.
+	ErrLogic = errorsmod.Register(codespace, 15, "internal logic error")
+
+	// ErrNotFound defines an error when requested entity doesn't exist in the state.
+	ErrNotFound = errorsmod.Register(codespace, 16, "not found")
+)