Merge PR #5090: feat: add pruning config to toml

CHANGELOG.md

@@ -82,6 +82,8 @@ to the new keyring.
 
 ### Improvements
 
+* (server) [\#4215](https://github.com/cosmos/cosmos-sdk/issues/4215) The `--pruning` flag
+has been moved to the configuration file, to allow easier node configuration.
 * (cli) [\#5116](https://github.com/cosmos/cosmos-sdk/issues/5116) The `CLIContext` now supports multiple verifiers
 when connecting to multiple chains. The connecting chain's `CLIContext` will have to have the correct
 chain ID and node URI or client set. To use a `CLIContext` with a verifier for another chain:

server/config/config.go

@@ -35,6 +35,8 @@ type BaseConfig struct {
 
 	// InterBlockCache enables inter-block caching.
 	InterBlockCache bool `mapstructure:"inter-block-cache"`
+
+	Pruning string `mapstructure:"pruning"`
 }
 
 // Config defines the server's top level configuration
@@ -75,6 +77,7 @@ func DefaultConfig() *Config {
 		BaseConfig{
 			MinGasPrices:    defaultMinGasPrices,
 			InterBlockCache: true,
+			Pruning:         "syncable",
 		},
 	}
 }

server/config/toml.go

@@ -35,6 +35,12 @@ halt-time = {{ .BaseConfig.HaltTime }}
 
 # InterBlockCache enables inter-block caching.
 inter-block-cache = {{ .BaseConfig.InterBlockCache }}
+
+# Pruning sets the pruning strategy: syncable, nothing, everything
+# syncable: only those states not needed for state syncing will be deleted (keeps last 100 + every 10000th)
+# nothing: all historic states will be saved, nothing will be deleted (i.e. archiving node)
+# everything: all saved states will be deleted, storing only the current state
+pruning = {{ .BaseConfig.Pruning }}
 `
 
 var configTemplate *template.Template