env-gasmodel

Use env-gasmodel to query or update the current gas model.

Basic syntax

To query the current gas model, use the following syntax:

(env-gasmodel)

To update the gas model to a table-based cost model, use the following syntax:

(env-gasmodel model)

To update the gas model to a fixed-rate model with a specific rate, use the following syntax:

(env-gasmodel model rate)

Arguments

Use the following arguments when using the env-gasmodel Pact function.

Argument	Type	Description
model	string	Specifies the gas model to set. The supported gas models are table to use a table-based gas model and fixed to use a fixed rate gas model.
rate	integer	Specifies the fixed rate or every operation. This argument is required if you set the model argument to use the fixed gas model.

Return value

When called with the model argument, env-gasmodel returns a string indicating the updated gas model.

When called without arguments, env-gasmodel returns a string describing the current gas model.

Examples

The following example demonstrates how to use the env-gasmodel function to query the current gas model:

pact> (env-gasmodel)
"Current gas model is 'fixed 1': constant rate gas model with fixed rate 1"

The following example demonstrates how to use the env-gasmodel function to update the current gas model to use a table-based cost model:

pact> (env-gasmodel "table")
"Set gas model to table-based cost model"

In the following example, the env-gasmodel function updates the gas model to use a fixed rate of two:

pact> (env-gasmodel "fixed" 2)
"Set gas model to constant rate gas model with fixed rate 2"