Add option no_lock to use no lock file if none was configured

cmd/csaf_aggregator/config.go

@@ -34,6 +34,10 @@ const (
 	defaultUpdateInterval = "on best effort"
 )
 
+var (
+	defaultLockFile       = "/var/csaf_aggregator/run.lock"
+)
+
 type provider struct {
 	Name   string `toml:"name"`
 	Domain string `toml:"domain"`
@@ -71,6 +75,7 @@ type config struct {
 
 	// LockFile tries to lock to a given file.
 	LockFile *string `toml:"lock_file"`
+	NoLock   bool    `toml:"no_lock"`
 
 	// Interim performs an interim scan.
 	Interim bool `toml:"interim"`
@@ -262,6 +267,10 @@ func (c *config) setDefaults() {
 		c.Domain = defaultDomain
 	}
 
+	if !c.NoLock && c.LockFile == nil {
+		c.LockFile = &defaultLockFile
+	}
+
 	if c.Workers <= 0 {
 		if n := runtime.NumCPU(); n > defaultWorkers {
 			c.Workers = defaultWorkers

docs/csaf_aggregator.md

@@ -91,7 +91,8 @@ openpgp_private_key     // OpenPGP private key (must have no passphrase set, if
                         // you want to be able to run unattended, e.g. via cron.)
 openpgp_public_key      // OpenPGP public key
 passphrase              // passphrase of the OpenPGP key
-lock_file               // path to lockfile, to stop other instances if one is not done (default no locking)
+lock_file               // path to lockfile, to stop other instances if one is not done (default:run.lock)
+no_lock                 // explicitely disable usage of lock files. (default: false)
 interim_years           // limiting the years for which interim documents are searched (default 0)
 verbose                 // print more diagnostic output, e.g. https requests (default false)
 allow_single_provider   // debugging option (default false)
@@ -158,6 +159,7 @@ categories document. For a more detailed explanation and examples,
 workers = 2
 folder = "/var/csaf_aggregator"
 lock_file = "/var/csaf_aggregator/run.lock"
+#no_lock = false
 web = "/var/csaf_aggregator/html"
 domain = "https://localhost:9443"
 rate = 10.0

docs/examples/aggregator.toml

@@ -1,6 +1,7 @@
 workers = 2
 folder = "/var/csaf_aggregator"
 lock_file = "/var/csaf_aggregator/run.lock"
+#no_lock = false
 web = "/var/csaf_aggregator/html"
 domain = "https://localhost:9443"
 rate = 10.0