feat: enhance evobgp with new command-line tools for bundle management, including pull, verify, and apply functionalities. Update go.mod to include necessary dependencies and complete todos in architecture plan for improved observability and deployment practices.

internal/birdfmt/bgp.go

@@ -0,0 +1,114 @@
+package birdfmt
+
+import (
+	"fmt"
+	"strings"
+)
+
+// BGPPeerIPv4Options describes a single BGP session (BIRD 2, IPv4 AF).
+type BGPPeerIPv4Options struct {
+	ProtocolName string // e.g. evobgp_peer_uplink
+	LocalIP      string // e.g. 192.0.2.1
+	LocalASN     uint32
+	NeighborIP   string
+	NeighborASN  uint32
+	// ExportFilter is a filter name, or empty for "export all".
+	ExportFilter string
+	// ImportFilter is a filter name, or empty for "import all".
+	ImportFilter string
+}
+
+// RenderProtocolBGPIPv4 renders a protocol bgp { … ipv4 { … } } block.
+func RenderProtocolBGPIPv4(opts BGPPeerIPv4Options) (string, error) {
+	if strings.TrimSpace(opts.ProtocolName) == "" {
+		return "", fmt.Errorf("birdfmt: protocol name is required")
+	}
+	if strings.TrimSpace(opts.LocalIP) == "" || strings.TrimSpace(opts.NeighborIP) == "" {
+		return "", fmt.Errorf("birdfmt: local and neighbor addresses are required")
+	}
+	if opts.LocalASN == 0 || opts.NeighborASN == 0 {
+		return "", fmt.Errorf("birdfmt: AS numbers must be non-zero")
+	}
+	imp := "all"
+	if strings.TrimSpace(opts.ImportFilter) != "" {
+		imp = "filter " + strings.TrimSpace(opts.ImportFilter)
+	}
+	exp := "all"
+	if strings.TrimSpace(opts.ExportFilter) != "" {
+		exp = "filter " + strings.TrimSpace(opts.ExportFilter)
+	}
+
+	var b strings.Builder
+	b.WriteString("protocol bgp ")
+	b.WriteString(strings.TrimSpace(opts.ProtocolName))
+	b.WriteString(" {\n")
+	b.WriteString("    local ")
+	b.WriteString(strings.TrimSpace(opts.LocalIP))
+	fmt.Fprintf(&b, " as %d;\n", opts.LocalASN)
+	b.WriteString("    neighbor ")
+	b.WriteString(strings.TrimSpace(opts.NeighborIP))
+	fmt.Fprintf(&b, " as %d;\n", opts.NeighborASN)
+	b.WriteString("    ipv4 {\n")
+	b.WriteString("        import ")
+	b.WriteString(imp)
+	b.WriteString(";\n")
+	b.WriteString("        export ")
+	b.WriteString(exp)
+	b.WriteString(";\n")
+	b.WriteString("    };\n")
+	b.WriteString("}\n")
+	return b.String(), nil
+}
+
+// BGPPeerIPv6Options describes a BGP session for the IPv6 AF.
+type BGPPeerIPv6Options struct {
+	ProtocolName string
+	LocalIP      string
+	LocalASN     uint32
+	NeighborIP   string
+	NeighborASN  uint32
+	ExportFilter string
+	ImportFilter string
+}
+
+// RenderProtocolBGPIPv6 renders a protocol bgp block with ipv6 { import/export }.
+func RenderProtocolBGPIPv6(opts BGPPeerIPv6Options) (string, error) {
+	if strings.TrimSpace(opts.ProtocolName) == "" {
+		return "", fmt.Errorf("birdfmt: protocol name is required")
+	}
+	if strings.TrimSpace(opts.LocalIP) == "" || strings.TrimSpace(opts.NeighborIP) == "" {
+		return "", fmt.Errorf("birdfmt: local and neighbor addresses are required")
+	}
+	if opts.LocalASN == 0 || opts.NeighborASN == 0 {
+		return "", fmt.Errorf("birdfmt: AS numbers must be non-zero")
+	}
+	imp := "all"
+	if strings.TrimSpace(opts.ImportFilter) != "" {
+		imp = "filter " + strings.TrimSpace(opts.ImportFilter)
+	}
+	exp := "all"
+	if strings.TrimSpace(opts.ExportFilter) != "" {
+		exp = "filter " + strings.TrimSpace(opts.ExportFilter)
+	}
+
+	var b strings.Builder
+	b.WriteString("protocol bgp ")
+	b.WriteString(strings.TrimSpace(opts.ProtocolName))
+	b.WriteString(" {\n")
+	b.WriteString("    local ")
+	b.WriteString(strings.TrimSpace(opts.LocalIP))
+	fmt.Fprintf(&b, " as %d;\n", opts.LocalASN)
+	b.WriteString("    neighbor ")
+	b.WriteString(strings.TrimSpace(opts.NeighborIP))
+	fmt.Fprintf(&b, " as %d;\n", opts.NeighborASN)
+	b.WriteString("    ipv6 {\n")
+	b.WriteString("        import ")
+	b.WriteString(imp)
+	b.WriteString(";\n")
+	b.WriteString("        export ")
+	b.WriteString(exp)
+	b.WriteString(";\n")
+	b.WriteString("    };\n")
+	b.WriteString("}\n")
+	return b.String(), nil
+}