refactor: phase 2 structural alignment — reports, importer, nodecli, pagination

Co-authored-by: Cursor <[email protected]>

internal/importer/csv.go

@@ -0,0 +1,147 @@
+package importer
+
+import (
+	"encoding/csv"
+	"fmt"
+	"io"
+	"strconv"
+	"strings"
+
+	"evobgp/internal/store"
+)
+
+// Result of importing module entries from CSV.
+type Result struct {
+	Imported   int
+	ModuleType string
+}
+
+// ImportModuleEntriesCSV parses and creates entries for AS_PREFIXES, DOMAINS, or IP_RANGES modules.
+func ImportModuleEntriesCSV(st store.Backend, tenantID, moduleID string, body io.Reader) (*Result, error) {
+	mod, err := st.GetModule(tenantID, moduleID)
+	if err != nil {
+		return nil, err
+	}
+
+	cr := csv.NewReader(io.LimitReader(body, 8<<20))
+	cr.TrimLeadingSpace = true
+	cr.FieldsPerRecord = -1
+	rows, err := cr.ReadAll()
+	if err != nil {
+		return nil, fmt.Errorf("importer: invalid csv: %w", err)
+	}
+	if len(rows) == 0 {
+		return nil, fmt.Errorf("importer: %w", store.ErrInvalidInput)
+	}
+
+	communities, err := st.ListCommunities(tenantID)
+	if err != nil {
+		return nil, err
+	}
+	communityIDByID := make(map[string]string, len(communities))
+	communityIDByValue := make(map[string]string, len(communities))
+	for _, c := range communities {
+		communityIDByID[c.ID] = c.ID
+		communityIDByValue[strings.TrimSpace(c.Community)] = c.ID
+	}
+
+	resolveCommunity := func(raw string, required bool) (*string, error) {
+		v := strings.TrimSpace(raw)
+		if v == "" {
+			if required {
+				return nil, fmt.Errorf("community is required")
+			}
+			return nil, nil
+		}
+		if id, ok := communityIDByID[v]; ok {
+			return &id, nil
+		}
+		if id, ok := communityIDByValue[v]; ok {
+			return &id, nil
+		}
+		return nil, fmt.Errorf("unknown community %q", v)
+	}
+
+	start := 0
+	if len(rows[0]) >= 2 {
+		key := strings.ToLower(strings.TrimSpace(rows[0][0]))
+		switch key {
+		case "asn", "domain", "iprange":
+			start = 1
+		}
+	}
+
+	imported := 0
+	switch mod.Type {
+	case "AS_PREFIXES":
+		for i := start; i < len(rows); i++ {
+			rec := rows[i]
+			if len(rec) == 0 || (strings.TrimSpace(rec[0]) == "" && (len(rec) < 2 || strings.TrimSpace(rec[1]) == "")) {
+				continue
+			}
+			if len(rec) < 2 {
+				return nil, fmt.Errorf("importer: line %d: expected 2 columns", i+1)
+			}
+			asn, err := strconv.ParseInt(strings.TrimSpace(rec[0]), 10, 64)
+			if err != nil || asn <= 0 {
+				return nil, fmt.Errorf("importer: line %d: invalid asn", i+1)
+			}
+			cid, err := resolveCommunity(rec[1], false)
+			if err != nil {
+				return nil, fmt.Errorf("importer: line %d: %w", i+1, err)
+			}
+			if _, err := st.CreateASEntry(tenantID, moduleID, &store.ASEntry{ASN: asn, CommunityID: cid}); err != nil {
+				return nil, err
+			}
+			imported++
+		}
+	case "DOMAINS":
+		for i := start; i < len(rows); i++ {
+			rec := rows[i]
+			if len(rec) == 0 || (strings.TrimSpace(rec[0]) == "" && (len(rec) < 2 || strings.TrimSpace(rec[1]) == "")) {
+				continue
+			}
+			if len(rec) < 2 {
+				return nil, fmt.Errorf("importer: line %d: expected 2 columns", i+1)
+			}
+			fqdn := strings.TrimSpace(rec[0])
+			if fqdn == "" {
+				return nil, fmt.Errorf("importer: line %d: domain is required", i+1)
+			}
+			cid, err := resolveCommunity(rec[1], false)
+			if err != nil {
+				return nil, fmt.Errorf("importer: line %d: %w", i+1, err)
+			}
+			if _, err := st.CreateDomainEntry(tenantID, moduleID, &store.DomainEntry{FQDN: fqdn, CommunityID: cid}); err != nil {
+				return nil, err
+			}
+			imported++
+		}
+	case "IP_RANGES":
+		for i := start; i < len(rows); i++ {
+			rec := rows[i]
+			if len(rec) == 0 || (strings.TrimSpace(rec[0]) == "" && (len(rec) < 2 || strings.TrimSpace(rec[1]) == "")) {
+				continue
+			}
+			if len(rec) < 2 {
+				return nil, fmt.Errorf("importer: line %d: expected 2 columns", i+1)
+			}
+			prefix := strings.TrimSpace(rec[0])
+			if prefix == "" {
+				return nil, fmt.Errorf("importer: line %d: ipRange is required", i+1)
+			}
+			cid, err := resolveCommunity(rec[1], true)
+			if err != nil {
+				return nil, fmt.Errorf("importer: line %d: %w", i+1, err)
+			}
+			if _, err := st.CreateIPRangeEntry(tenantID, moduleID, &store.IPRangeEntry{Prefix: prefix, CommunityID: cid}); err != nil {
+				return nil, err
+			}
+			imported++
+		}
+	default:
+		return nil, fmt.Errorf("importer: csv import/export is supported only for AS_PREFIXES, DOMAINS, IP_RANGES")
+	}
+
+	return &Result{Imported: imported, ModuleType: mod.Type}, nil
+}