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params package

Overview

Package params provides functions for creating parameter executors that interface with the Params Keeper.

This package enables setting various parameter types (such as strings, integers, booleans, and byte slices) through the GovDAO proposal mechanism. Each function returns an executor that, when called, sets the specified parameter in the Params Keeper.

The executors are designed to be used within governance proposals to modify parameters dynamically. The integration with the GovDAO allows for parameter changes to be proposed and executed in a controlled manner, ensuring that modifications are subject to governance processes.

Example usage:

Example
1// This executor can be used in a governance proposal to set the parameter.
2pr := params.NewSysParamStringPropExecutor("bank", "p", "restricted_denoms")

Function

NewSetHaltRequest

func NewSetHaltRequest(cur realm, height int64, minVersion string) dao.ProposalRequest

NewSetHaltRequest creates a GovDAO proposal to halt all chain nodes at the given block height. Once approved and executed, nodes will gracefully stop after committing the specified block, enabling coordinated chain upgrades.

minVersion, if non-empty, sets the minimum binary version required to resume after the halt. Nodes will refuse to restart unless their version satisfies the minimum requirement, preventing old binaries from accidentally resuming a chain halted for an upgrade. Example: minVersion="v1.3.0" prevents a v1.2.0 binary from resuming.

minVersion must be a release tag the node can parse: vMAJOR.MINOR.PATCH, or betanet's retired chain/gnolandMAJOR.MINOR. It is NOT the chain's launch tag — naming "chain/mainnet" here parses as nothing, so the comparison degrades to byte equality and refuses the upgraded binary alongside the stale ones, leaving the chain unable to restart. This function does not check the shape; the release tooling does. See RELEASING.md and gno.land/cmd/gnoland/UPGRADES.md, and prefer misc/govdao-scripts/set-halt.sh over writing the call by hand.

Use height=0 to cancel a previously scheduled halt.

Params

Command

# WARNING: This command is running in an INSECURE mode.
# It is strongly recommended to use a hardware device for signing
# and avoid trusting any computer connected to the internet,
# as your private keys could be exposed.

gnokey maketx call -pkgpath "gno.land/r/sys/params" -func "NewSetHaltRequest" -args $'' -args $'' -gas-fee 1000000ugnot -gas-wanted 1_000_000_000 -send "" -chainid "dev" -remote "https://api.gno.berty.io:443" ADDRESSgnokey query -remote "https://api.gno.berty.io:443" auth/accounts/ADDRESS
gnokey maketx call -pkgpath "gno.land/r/sys/params" -func "NewSetHaltRequest" -args $'' -args $'' -gas-fee 1000000ugnot -gas-wanted 1_000_000_000 -send "" -broadcast=false ADDRESS > call.tx
gnokey sign -tx-path call.tx -chainid "dev" -account-number ACCOUNTNUMBER -account-sequence SEQUENCENUMBER ADDRESS
gnokey broadcast -remote "https://api.gno.berty.io:443" call.tx