EvoBGP/internal/store/backend.go

package store

import (
	"context"
	"strings"
	"time"
)

// Backend is the persistence abstraction for the control plane (memory, PostgreSQL, SQLite).
type Backend interface {
	MaterializedPrefixStats() (max int, sum int)
	PeerCount() int
	PeerSessionCountsByState() map[string]int
	// DemoIDs is non-empty only after SeedDemo (memory or seeded SQL).
	DemoIDs() (tenant, moduleCDN, moduleIP, revision, speaker string)

	// ListTenantIDs returns distinct tenant identifiers (for background workers).
	ListTenantIDs() ([]string, error)

	// ListModules returns all modules for a tenant (control plane may paginate in httpapi).
	ListModules(tenantID string) []*Module
	// ListModulesPage returns one page of modules (limit capped by caller).
	ListModulesPage(tenantID, cursor string, limit int) ([]*Module, string, bool)
	GetModule(tenantID, moduleID string) (*Module, error)
	CreateModule(tenantID string, in *Module) (*Module, error)
	UpdateModule(tenantID, moduleID string, patch *ModulePatch) (*Module, error)
	SoftDeleteModule(tenantID, moduleID string) error

	ListCDNSources(tenantID, moduleID string) ([]*CDNSource, error)
	CreateCDNSource(tenantID, moduleID string, in *CDNSource) (*CDNSource, error)
	UpdateCDNSource(tenantID, moduleID, sourceID string, patch *CDNSourcePatch) (*CDNSource, error)
	DeleteCDNSource(tenantID, moduleID, sourceID string) error

	ListASEntries(tenantID, moduleID string) ([]*ASEntry, error)
	CreateASEntry(tenantID, moduleID string, in *ASEntry) (*ASEntry, error)
	UpdateASEntry(tenantID, moduleID, entryID string, patch *ASEntryPatch) (*ASEntry, error)
	DeleteASEntry(tenantID, moduleID, entryID string) error
	// UpdateASEntryResolveMeta записывает имя AS, число объявленных префиксов и время успешного резолва (pipeline).
	UpdateASEntryResolveMeta(tenantID, moduleID, entryID string, asnName string, prefixCount int64, resolvedAt time.Time) error
	UpdateASEntryResolveMetaBatch(tenantID, moduleID string, updates []ASEntryResolveMetaUpdate, resolvedAt time.Time) error

	ListDomainEntries(tenantID, moduleID string) ([]*DomainEntry, error)
	CreateDomainEntry(tenantID, moduleID string, in *DomainEntry) (*DomainEntry, error)
	UpdateDomainEntry(tenantID, moduleID, entryID string, patch *DomainEntryPatch) (*DomainEntry, error)
	DeleteDomainEntry(tenantID, moduleID, entryID string) error

	ListIPRangeEntries(tenantID, moduleID string) ([]*IPRangeEntry, error)
	CreateIPRangeEntry(tenantID, moduleID string, in *IPRangeEntry) (*IPRangeEntry, error)
	UpdateIPRangeEntry(tenantID, moduleID, entryID string, patch *IPRangePatch) (*IPRangeEntry, error)
	DeleteIPRangeEntry(tenantID, moduleID, entryID string) error

	ListDohProfiles(tenantID string) ([]*DohProfile, error)
	GetDohProfile(tenantID, id string) (*DohProfile, error)
	CreateDohProfile(tenantID string, in *DohProfile) (*DohProfile, error)
	UpdateDohProfile(tenantID, id string, patch *DohProfilePatch) (*DohProfile, error)
	DeleteDohProfile(tenantID, id string) error

	ListCommunities(tenantID string) ([]*Community, error)
	GetCommunity(tenantID, id string) (*Community, error)
	CreateCommunity(tenantID string, in *Community) (*Community, error)
	UpdateCommunity(tenantID, id string, patch *CommunityPatch) (*Community, error)
	DeleteCommunity(tenantID, id string) error

	// ListPeers returns all BGP peers for a tenant (control plane may paginate in httpapi).
	ListPeers(tenantID string) []*BGPPeer
	GetPeer(tenantID, id string) (*BGPPeer, error)
	CreatePeer(tenantID string, in *BGPPeer) (*BGPPeer, error)
	UpdatePeer(tenantID, id string, patch *PeerPatch) (*BGPPeer, error)
	DeletePeer(tenantID, id string) error

	ListSpeakersForTenant(tenantID string) []*Speaker
	GetSpeaker(tenantID, speakerID string) (*Speaker, error)
	GetSpeakerAnyTenant(speakerID string) (*Speaker, error)
	CreateSpeaker(tenantID string, in *Speaker) (*Speaker, error)
	UpdateSpeaker(tenantID, id string, patch *SpeakerPatch) (*Speaker, error)
	DeleteSpeaker(tenantID, id string) error

	GetRevision(tenantID, revisionID string) (*Revision, error)
	// GetRevisionSummary returns revision metadata without preview_fragments payloads.
	GetRevisionSummary(tenantID, revisionID string) (*Revision, error)
	ListRevisions(tenantID, moduleID string, cursor string, limit int) (items []*Revision, nextCursor string, hasMore bool)
	ListRevisionPrefixes(tenantID, revisionID string, cursor string, limit int) (prefixes []PrefixRow, next string, more bool)
	CreateRollbackRevision(tenantID, sourceRevisionID string) (newID string, err error)
	// CreateRenderRevision inserts a new config_revision (revID must be unique) with materialized prefixes and preview fragments.
	CreateRenderRevision(revisionID, tenantID, moduleID string, parentRevisionID *string, contentHash string, previewFragments map[string]string, prefixes []PrefixRow) error
	RevisionDiff(tenantID, aID, bID string) (map[string]any, error)
	EstimateRevisionPrune(tenantID string, cutoff time.Time, retentionMinutes int) (RevisionPruneEstimate, error)
	PruneRevisionsWithStats(tenantID string, cutoff time.Time) (RevisionPruneResult, error)
	PruneRevisionsBefore(tenantID string, cutoff time.Time) (deleted int, err error)
	SetLastAppliedRevision(tenantID, speakerID, revisionID string) error
	PublishRevisionForSpeaker(speakerID, revisionID string) error
	LatestPublishedRevision(speakerID string) (revisionID string, publishedAt time.Time, err error)

	ListGlobalSettings(tenantID string) (map[string]any, error)
	PatchGlobalSettings(tenantID string, patch map[string]any) error

	ListAPIKeys(tenantID string) ([]*APIKey, error)
	GetAPIKey(tenantID, id string) (*APIKey, error)
	CreateAPIKey(tenantID string, in *APIKeyCreate) (*APIKeyWithSecret, error)
	UpdateAPIKey(tenantID, id string, patch *APIKeyPatch) (*APIKey, error)
	RevokeAPIKey(tenantID, id string) error
	RotateAPIKey(tenantID, id string) (*APIKeyWithSecret, error)
	ListActiveAPIKeyHashes() ([]APIKeyAuthRow, error)
	TouchAPIKeyLastUsed(id string) error

	// Module prefix snapshots cache last successful collect per module (pipeline ingest/render).
	GetModulePrefixSnapshot(tenantID, moduleID string) (*ModulePrefixSnapshot, bool, error)
	SetModulePrefixSnapshot(tenantID, moduleID, inputHash string, prefixes []PrefixRow) error
	DeleteModulePrefixSnapshot(tenantID, moduleID string) error

	// ASNPrefixCache stores RIPEstat announced-prefixes per ASN (global TTL cache).
	GetASNPrefixCache(asn int64) (*ASNPrefixCacheEntry, bool, error)
	SetASNPrefixCache(asn int64, holder string, prefixes []string) error

	// Ping verifies backend connectivity (no-op for in-memory).
	Ping(ctx context.Context) error

	// RunPeriodicMaintenance prunes stale DB rows (no-op for in-memory).
	RunPeriodicMaintenance(ctx context.Context)

	// Maintenance policies (instance-scoped PostgreSQL maintenance configuration).
	ListMaintenancePolicies(cursor string, limit int) ([]*MaintenancePolicy, string, bool, error)
	GetMaintenancePolicy(id string) (*MaintenancePolicy, error)
	CreateMaintenancePolicy(in *MaintenancePolicy) (*MaintenancePolicy, error)
	UpdateMaintenancePolicy(id string, patch *MaintenancePolicyPatch) (*MaintenancePolicy, error)
	DeleteMaintenancePolicy(id string) error
	TouchMaintenancePolicyRun(id, status, errMsg string) error
	AppendMaintenancePolicyConfigAudit(actor, policyID, action string, before, after map[string]any) error
	ListMaintenancePolicyConfigAudit(cursor string, limit int) ([]*MaintenancePolicyConfigAudit, string, bool, error)

	// Runtime log cleanup audit (filesystem ops logged per tenant).
	AppendRuntimeLogCleanupAudit(tenantID, actor, filename, action string, sizeBefore int64, sizeAfter *int64, detail map[string]any) (string, error)
	ListRuntimeLogCleanupAudit(tenantID, cursor string, limit int) ([]*RuntimeLogCleanupAudit, string, bool, error)
}

// ASNPrefixCacheEntry is a cached RIPEstat response for one ASN.
type ASNPrefixCacheEntry struct {
	ASN       int64
	Holder    string
	Prefixes  []string
	FetchedAt time.Time
}

// ModulePrefixSnapshot is the cached materialization for one module between refreshes.
type ModulePrefixSnapshot struct {
	InputHash   string
	CollectedAt time.Time
	Prefixes    []PrefixRow
}

// ModulePatch is a partial update for module.
type ModulePatch struct {
	Name               *string    `json:"name,omitempty"`
	Enabled            *bool      `json:"enabled,omitempty"`
	Priority           *int       `json:"priority,omitempty"`
	RefreshIntervalSec *int       `json:"refresh_interval_sec,omitempty"`
	CronExpr           *string    `json:"cron_expr,omitempty"`
	DefaultCommunityID *string    `json:"default_community_id,omitempty"`
	DohProfileID       *string    `json:"doh_profile_id,omitempty"`
	DohProfileIDs      *[]string  `json:"doh_profile_ids,omitempty"`
	DohResolverPolicy  *string    `json:"doh_resolver_policy,omitempty"`
	LastRefreshedAt    *time.Time `json:"-"`
}

// CDNSource is a row under a CDN module.
type CDNSource struct {
	ID                 string     `json:"id,omitempty"`
	ModuleID           string     `json:"module_id,omitempty"`
	SourceKind         string     `json:"source_kind"`
	URL                string     `json:"url"`
	PrefixPath         string     `json:"prefix_path,omitempty"`
	Etag               string     `json:"etag"`
	RefreshIntervalSec *int       `json:"refresh_interval_sec"`
	CommunityID        *string    `json:"community_id"`
	LastRefreshedAt    *time.Time `json:"-"`
}

type CDNSourcePatch struct {
	SourceKind         *string    `json:"source_kind,omitempty"`
	URL                *string    `json:"url,omitempty"`
	PrefixPath         *string    `json:"prefix_path,omitempty"`
	Etag               *string    `json:"etag,omitempty"`
	RefreshIntervalSec *int       `json:"refresh_interval_sec,omitempty"`
	CommunityID        *string    `json:"community_id,omitempty"`
	LastRefreshedAt    *time.Time `json:"-"`
}

type ASEntry struct {
	ID            string     `json:"id,omitempty"`
	ModuleID      string     `json:"module_id,omitempty"`
	ASN           int64      `json:"asn"`
	CommunityID   *string    `json:"community_id"`
	ASNName       string     `json:"asn_name,omitempty"`
	PrefixCount   *int64     `json:"prefix_count,omitempty"`
	ASNResolvedAt *time.Time `json:"asn_resolved_at,omitempty"`
}

type ASEntryPatch struct {
	ASN         *int64  `json:"asn,omitempty"`
	CommunityID *string `json:"community_id,omitempty"`
}

// ValidASN reports whether n is a usable BGP ASN (1..4294967295).
func ValidASN(n int64) bool {
	return n >= 1 && n <= 4294967295
}

type DomainEntry struct {
	ID          string  `json:"id,omitempty"`
	ModuleID    string  `json:"module_id,omitempty"`
	FQDN        string  `json:"fqdn"`
	CommunityID *string `json:"community_id"`
}

type DomainEntryPatch struct {
	FQDN        *string `json:"fqdn,omitempty"`
	CommunityID *string `json:"community_id,omitempty"`
}

type IPRangeEntry struct {
	ID          string  `json:"id,omitempty"`
	ModuleID    string  `json:"module_id,omitempty"`
	Prefix      string  `json:"prefix"`
	CommunityID *string `json:"community_id"`
}

type IPRangePatch struct {
	Prefix      *string `json:"prefix,omitempty"`
	CommunityID *string `json:"community_id,omitempty"`
}

type DohProfile struct {
	ID        string  `json:"id,omitempty"`
	TenantID  string  `json:"tenant_id,omitempty"`
	Name      string  `json:"name"`
	URL       string  `json:"url"`
	TimeoutMs *int    `json:"timeout_ms"`
	SecretRef *string `json:"vault_secret_ref"`
}

type DohProfilePatch struct {
	Name      *string `json:"name,omitempty"`
	URL       *string `json:"url,omitempty"`
	TimeoutMs *int    `json:"timeout_ms,omitempty"`
	SecretRef *string `json:"vault_secret_ref,omitempty"`
}

type Community struct {
	ID        string `json:"id,omitempty"`
	TenantID  string `json:"tenant_id,omitempty"`
	Community string `json:"community"`
	Title     string `json:"title"`
	ValueJSON string `json:"value_json"`
}

type CommunityPatch struct {
	Community *string `json:"community,omitempty"`
	Title     *string `json:"title,omitempty"`
	ValueJSON *string `json:"value_json,omitempty"`
}

// APIKey is tenant-scoped API key metadata (secret never stored in plaintext).
type APIKey struct {
	ID         string     `json:"id"`
	TenantID   string     `json:"tenant_id,omitempty"`
	Name       string     `json:"name"`
	Role       string     `json:"role"`
	Prefix     string     `json:"prefix"`
	CreatedAt  time.Time  `json:"created_at"`
	UpdatedAt  time.Time  `json:"updated_at"`
	ExpiresAt  *time.Time `json:"expires_at,omitempty"`
	RevokedAt  *time.Time `json:"revoked_at,omitempty"`
	LastUsedAt *time.Time `json:"last_used_at,omitempty"`
}

// APIKeyCreate is input for issuing a new key.
type APIKeyCreate struct {
	Name      string     `json:"name"`
	Role      string     `json:"role"`
	ExpiresAt *time.Time `json:"expires_at,omitempty"`
}

// APIKeyPatch is a partial update (role change affects auth after resolver reload).
type APIKeyPatch struct {
	Name           *string    `json:"name,omitempty"`
	Role           *string    `json:"role,omitempty"`
	ExpiresAt      *time.Time `json:"expires_at,omitempty"`
	ClearExpiresAt bool       `json:"-"`
}

// APIKeyWithSecret is returned only on create/rotate.
type APIKeyWithSecret struct {
	APIKey
	Token string `json:"token"`
}

// APIKeyAuthRow is used to build the in-process auth index.
type APIKeyAuthRow struct {
	ID        string
	TenantID  string
	Role      string
	TokenHash []byte
}

// ValidAPIKeyRole reports whether role is allowed for API keys.
func ValidAPIKeyRole(role string) bool {
	switch strings.ToLower(strings.TrimSpace(role)) {
	case "viewer", "editor", "operator", "node":
		return true
	default:
		return false
	}
}

type PeerPatch struct {
	Neighbor     *string `json:"neighbor,omitempty"`
	RemoteASN    *int64  `json:"remote_asn,omitempty"`
	SpeakerID    *string `json:"bgp_speaker_id,omitempty"`
	Enabled      *bool   `json:"enabled,omitempty"`
	Name         *string `json:"name,omitempty"`
	SessionState *string `json:"session_state,omitempty"`
	PoliciesJSON *string `json:"policies_json,omitempty"`
}

type SpeakerPatch struct {
	Role     *string `json:"role,omitempty"`
	Endpoint *string `json:"endpoint,omitempty"`
	MetaJSON *string `json:"meta_json,omitempty"`
}

// PrefixRow is one materialized prefix for GET /revisions/.../prefixes.
type PrefixRow struct {
	Prefix      string  `json:"prefix"`
	CommunityID *string `json:"community_id,omitempty"`
	Source      string  `json:"source,omitempty"`
}