refactor: Split large main file

ca.go

@@ -0,0 +1,38 @@
+package main
+
+import (
+	"crypto/x509"
+	"sync"
+
+	"ocspcrl/internal/metrics"
+	"ocspcrl/internal/ocsp_source"
+)
+
+type caInstance struct {
+	name          string
+	crlPath       string
+	caCertificate *x509.Certificate
+	source        *ocsp_source.CrlSource
+
+	crlMutex sync.RWMutex
+	crl      *x509.RevocationList
+}
+
+func (c *caInstance) reloadCrl() error {
+	crl, loadError := loadCrlFromFile(c.crlPath)
+	if loadError != nil {
+		return loadError
+	}
+	c.crlMutex.Lock()
+	c.crl = crl
+	c.crlMutex.Unlock()
+	metrics.CrlEntries.WithLabelValues(c.name).Set(float64(len(crl.RevokedCertificateEntries)))
+	c.source.UseCrl(*crl)
+	return nil
+}
+
+func (c *caInstance) currentCrl() *x509.RevocationList {
+	c.crlMutex.RLock()
+	defer c.crlMutex.RUnlock()
+	return c.crl
+}