httpcaddyfile: Add global option for storage_clean_interval (#4134)

Followup to 42b7134ffa

caddyconfig/httpcaddyfile/options.go

@@ -32,6 +32,7 @@ func init() {
 	RegisterGlobalOption("default_sni", parseOptSingleString)
 	RegisterGlobalOption("order", parseOptOrder)
 	RegisterGlobalOption("storage", parseOptStorage)
+	RegisterGlobalOption("storage_clean_interval", parseOptStorageCleanInterval)
 	RegisterGlobalOption("acme_ca", parseOptSingleString)
 	RegisterGlobalOption("acme_ca_root", parseOptSingleString)
 	RegisterGlobalOption("acme_dns", parseOptACMEDNS)
@@ -177,6 +178,20 @@ func parseOptStorage(d *caddyfile.Dispenser, _ interface{}) (interface{}, error)
 	return storage, nil
 }
 
+func parseOptStorageCleanInterval(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
+	if !d.Next() { // consume option name
+		return nil, d.ArgErr()
+	}
+	if !d.Next() { // get duration value
+		return nil, d.ArgErr()
+	}
+	dur, err := caddy.ParseDuration(d.Val())
+	if err != nil {
+		return nil, err
+	}
+	return caddy.Duration(dur), nil
+}
+
 func parseOptACMEDNS(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
 	if !d.Next() { // consume option name
 		return nil, d.ArgErr()

caddyconfig/httpcaddyfile/tlsapp.go

@@ -278,6 +278,14 @@ func (st ServerType) buildTLSApp(
 		tlsApp.Automation.OnDemand = onDemand
 	}
 
+	// set the storage clean interval if configured
+	if storageCleanInterval, ok := options["storage_clean_interval"].(caddy.Duration); ok {
+		if tlsApp.Automation == nil {
+			tlsApp.Automation = new(caddytls.AutomationConfig)
+		}
+		tlsApp.Automation.StorageCleanInterval = storageCleanInterval
+	}
+
 	// if any hostnames appear on the same server block as a key with
 	// no host, they will not be used with route matchers because the
 	// hostless key matches all hosts, therefore, it wouldn't be

caddytest/integration/caddyfile_adapt/global_options_acme.txt

@@ -20,6 +20,7 @@
 		interval 30s
 		burst 20
 	}
+	storage_clean_interval 7d
 
 	key_type ed25519
 }
@@ -80,7 +81,8 @@
 						"burst": 20
 					},
 					"ask": "https://example.com"
-				}
+				},
+				"storage_clean_interval": 604800000000000
 			}
 		}
 	}