Fix atomic latest version update to prevent missing isLatest flags (#530)
## Summary Fixes a race condition where a server could have no version marked as `isLatest` if the database operations failed independently. ## Changes - **CreateServer signature**: Now accepts `oldLatestVersionID` parameter to atomically unmark previous latest version - **PostgreSQL implementation**: Uses a transaction to ensure UPDATE (unmark old latest) and INSERT (create new version) happen atomically - **Service layer**: Maintains `WithPublishLock` for concurrent operation serialization - **Two-level protection**: Advisory lock prevents races, transaction ensures atomicity ## Test plan - [x] Existing race condition tests pass - [x] Integration tests pass - [x] Unit tests pass 🤖 Generated with [Claude Code](https://claude.ai/code) --------- Co-authored-by: Claude <noreply@anthropic.com>
This commit is contained in:
adam jones
GitHub
parent
ae00f70eaf
commit
747ad310bb
7 changed files with 243 additions and 233 deletions
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@ -5,6 +5,7 @@ import (
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"errors"
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"time"
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"github.com/jackc/pgx/v5"
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apiv0 "github.com/modelcontextprotocol/registry/pkg/api/v0"
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)
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@ -31,36 +32,38 @@ type ServerFilter struct {
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// Database defines the interface for database operations
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type Database interface {
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// Retrieve server entries with optional filtering
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List(ctx context.Context, filter *ServerFilter, cursor string, limit int) ([]*apiv0.ServerJSON, string, error)
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List(ctx context.Context, tx pgx.Tx, filter *ServerFilter, cursor string, limit int) ([]*apiv0.ServerJSON, string, error)
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// Retrieve a single server by its version ID
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GetByVersionID(ctx context.Context, versionID string) (*apiv0.ServerJSON, error)
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GetByVersionID(ctx context.Context, tx pgx.Tx, versionID string) (*apiv0.ServerJSON, error)
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// Retrieve latest version of a server by server ID
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GetByServerID(ctx context.Context, serverID string) (*apiv0.ServerJSON, error)
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GetByServerID(ctx context.Context, tx pgx.Tx, serverID string) (*apiv0.ServerJSON, error)
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// Retrieve specific version of a server by server ID and version
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GetByServerIDAndVersion(ctx context.Context, serverID string, version string) (*apiv0.ServerJSON, error)
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GetByServerIDAndVersion(ctx context.Context, tx pgx.Tx, serverID string, version string) (*apiv0.ServerJSON, error)
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// Retrieve all versions of a server by server ID
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GetAllVersionsByServerID(ctx context.Context, serverID string) ([]*apiv0.ServerJSON, error)
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// CreateServer adds a new server to the database
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CreateServer(ctx context.Context, server *apiv0.ServerJSON) (*apiv0.ServerJSON, error)
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GetAllVersionsByServerID(ctx context.Context, tx pgx.Tx, serverID string) ([]*apiv0.ServerJSON, error)
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// CreateServer inserts a new server version
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CreateServer(ctx context.Context, tx pgx.Tx, newServer *apiv0.ServerJSON) (*apiv0.ServerJSON, error)
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// UpdateServer updates an existing server record
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UpdateServer(ctx context.Context, id string, server *apiv0.ServerJSON) (*apiv0.ServerJSON, error)
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// WithPublishLock executes a function with an exclusive lock for publishing a server
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UpdateServer(ctx context.Context, tx pgx.Tx, id string, server *apiv0.ServerJSON) (*apiv0.ServerJSON, error)
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// AcquirePublishLock acquires an exclusive advisory lock for publishing a server
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// This prevents race conditions when multiple versions are published concurrently
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WithPublishLock(ctx context.Context, serverName string, fn func(ctx context.Context) error) error
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AcquirePublishLock(ctx context.Context, tx pgx.Tx, serverName string) error
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// InTransaction executes a function within a database transaction
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InTransaction(ctx context.Context, fn func(ctx context.Context, tx pgx.Tx) error) error
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// Close closes the database connection
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Close() error
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}
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// WithPublishLockT is a generic helper that wraps WithPublishLock for functions returning a value
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// InTransactionT is a generic helper that wraps InTransaction for functions returning a value
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// This exists because Go does not support generic methods on interfaces - only the Database interface
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// method WithPublishLock (without generics) can exist, so we provide this generic wrapper function.
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// method InTransaction (without generics) can exist, so we provide this generic wrapper function.
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// This is a common pattern in Go for working around this language limitation.
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func WithPublishLockT[T any](ctx context.Context, db Database, serverName string, fn func(ctx context.Context) (T, error)) (T, error) {
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func InTransactionT[T any](ctx context.Context, db Database, fn func(ctx context.Context, tx pgx.Tx) (T, error)) (T, error) {
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var result T
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var fnErr error
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err := db.WithPublishLock(ctx, serverName, func(lockCtx context.Context) error {
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result, fnErr = fn(lockCtx)
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err := db.InTransaction(ctx, func(txCtx context.Context, tx pgx.Tx) error {
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result, fnErr = fn(txCtx, tx)
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return fnErr
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})
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@ -71,4 +74,3 @@ func WithPublishLockT[T any](ctx context.Context, db Database, serverName string
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return result, nil
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}
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@ -5,11 +5,13 @@ import (
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"encoding/json"
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"errors"
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"fmt"
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"log"
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"strings"
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"time"
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"github.com/google/uuid"
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"github.com/jackc/pgx/v5"
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"github.com/jackc/pgx/v5/pgconn"
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"github.com/jackc/pgx/v5/pgxpool"
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apiv0 "github.com/modelcontextprotocol/registry/pkg/api/v0"
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@ -20,6 +22,21 @@ type PostgreSQL struct {
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pool *pgxpool.Pool
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}
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// Executor is an interface for executing queries (satisfied by both pgx.Tx and pgxpool.Pool)
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type Executor interface {
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Exec(ctx context.Context, sql string, arguments ...any) (pgconn.CommandTag, error)
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Query(ctx context.Context, sql string, args ...any) (pgx.Rows, error)
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QueryRow(ctx context.Context, sql string, args ...any) pgx.Row
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}
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// getExecutor returns the appropriate executor (transaction or pool)
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func (db *PostgreSQL) getExecutor(tx pgx.Tx) Executor {
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if tx != nil {
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return tx
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}
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return db.pool
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}
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// NewPostgreSQL creates a new instance of the PostgreSQL database
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func NewPostgreSQL(ctx context.Context, connectionURI string) (*PostgreSQL, error) {
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// Parse connection config for pool settings
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@ -65,6 +82,7 @@ func NewPostgreSQL(ctx context.Context, connectionURI string) (*PostgreSQL, erro
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//nolint:cyclop // Database filtering logic is inherently complex but clear
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func (db *PostgreSQL) List(
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ctx context.Context,
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tx pgx.Tx,
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filter *ServerFilter,
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cursor string,
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limit int,
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@ -142,7 +160,7 @@ func (db *PostgreSQL) List(
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`, whereClause, argIndex)
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args = append(args, limit)
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rows, err := db.pool.Query(ctx, query, args...)
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rows, err := db.getExecutor(tx).Query(ctx, query, args...)
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if err != nil {
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return nil, "", fmt.Errorf("failed to query servers: %w", err)
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}
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@ -182,7 +200,7 @@ func (db *PostgreSQL) List(
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return results, nextCursor, nil
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}
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func (db *PostgreSQL) GetByVersionID(ctx context.Context, versionID string) (*apiv0.ServerJSON, error) {
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func (db *PostgreSQL) GetByVersionID(ctx context.Context, tx pgx.Tx, versionID string) (*apiv0.ServerJSON, error) {
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if ctx.Err() != nil {
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return nil, ctx.Err()
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}
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@ -194,8 +212,7 @@ func (db *PostgreSQL) GetByVersionID(ctx context.Context, versionID string) (*ap
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`
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var valueJSON []byte
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err := db.pool.QueryRow(ctx, query, versionID).Scan(&valueJSON)
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err := db.getExecutor(tx).QueryRow(ctx, query, versionID).Scan(&valueJSON)
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if err != nil {
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if errors.Is(err, pgx.ErrNoRows) {
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@ -214,7 +231,7 @@ func (db *PostgreSQL) GetByVersionID(ctx context.Context, versionID string) (*ap
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}
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// GetByServerID retrieves the latest version of a server by server ID
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func (db *PostgreSQL) GetByServerID(ctx context.Context, serverID string) (*apiv0.ServerJSON, error) {
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func (db *PostgreSQL) GetByServerID(ctx context.Context, tx pgx.Tx, serverID string) (*apiv0.ServerJSON, error) {
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if ctx.Err() != nil {
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return nil, ctx.Err()
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}
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@ -228,8 +245,7 @@ func (db *PostgreSQL) GetByServerID(ctx context.Context, serverID string) (*apiv
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`
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var valueJSON []byte
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err := db.pool.QueryRow(ctx, query, serverID).Scan(&valueJSON)
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err := db.getExecutor(tx).QueryRow(ctx, query, serverID).Scan(&valueJSON)
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if err != nil {
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if errors.Is(err, pgx.ErrNoRows) {
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@ -248,7 +264,7 @@ func (db *PostgreSQL) GetByServerID(ctx context.Context, serverID string) (*apiv
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}
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// GetByServerIDAndVersion retrieves a specific version of a server by server ID and version
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func (db *PostgreSQL) GetByServerIDAndVersion(ctx context.Context, serverID string, version string) (*apiv0.ServerJSON, error) {
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func (db *PostgreSQL) GetByServerIDAndVersion(ctx context.Context, tx pgx.Tx, serverID string, version string) (*apiv0.ServerJSON, error) {
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if ctx.Err() != nil {
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return nil, ctx.Err()
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}
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@ -261,8 +277,7 @@ func (db *PostgreSQL) GetByServerIDAndVersion(ctx context.Context, serverID stri
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`
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var valueJSON []byte
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err := db.pool.QueryRow(ctx, query, serverID, version).Scan(&valueJSON)
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err := db.getExecutor(tx).QueryRow(ctx, query, serverID, version).Scan(&valueJSON)
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if err != nil {
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if errors.Is(err, pgx.ErrNoRows) {
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@ -281,7 +296,7 @@ func (db *PostgreSQL) GetByServerIDAndVersion(ctx context.Context, serverID stri
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}
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// GetAllVersionsByServerID retrieves all versions of a server by server ID
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func (db *PostgreSQL) GetAllVersionsByServerID(ctx context.Context, serverID string) ([]*apiv0.ServerJSON, error) {
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func (db *PostgreSQL) GetAllVersionsByServerID(ctx context.Context, tx pgx.Tx, serverID string) ([]*apiv0.ServerJSON, error) {
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if ctx.Err() != nil {
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return nil, ctx.Err()
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}
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@ -293,7 +308,7 @@ func (db *PostgreSQL) GetAllVersionsByServerID(ctx context.Context, serverID str
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ORDER BY (value->'_meta'->'io.modelcontextprotocol.registry/official'->>'publishedAt')::timestamp DESC
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`
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rows, err := db.pool.Query(ctx, query, serverID)
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rows, err := db.getExecutor(tx).Query(ctx, query, serverID)
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if err != nil {
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return nil, fmt.Errorf("failed to query server versions: %w", err)
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}
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@ -328,8 +343,8 @@ func (db *PostgreSQL) GetAllVersionsByServerID(ctx context.Context, serverID str
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return results, nil
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}
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// CreateServer adds a new server to the database
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func (db *PostgreSQL) CreateServer(ctx context.Context, server *apiv0.ServerJSON) (*apiv0.ServerJSON, error) {
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// CreateServer inserts a new server version
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func (db *PostgreSQL) CreateServer(ctx context.Context, tx pgx.Tx, server *apiv0.ServerJSON) (*apiv0.ServerJSON, error) {
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if ctx.Err() != nil {
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return nil, ctx.Err()
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}
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@ -339,11 +354,9 @@ func (db *PostgreSQL) CreateServer(ctx context.Context, server *apiv0.ServerJSON
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return nil, fmt.Errorf("server must have registry metadata with ServerID and VersionID")
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}
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serverID := server.Meta.Official.ServerID
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versionID := server.Meta.Official.VersionID
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if serverID == "" || versionID == "" {
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return nil, fmt.Errorf("server must have both ServerID and VersionID in registry metadata")
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if versionID == "" {
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return nil, fmt.Errorf("server must have VersionID in registry metadata")
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}
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// Marshal the complete server to JSONB
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@ -352,13 +365,14 @@ func (db *PostgreSQL) CreateServer(ctx context.Context, server *apiv0.ServerJSON
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return nil, fmt.Errorf("failed to marshal server JSON: %w", err)
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}
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// Insert into servers table with new schema (only version_id column, serverId is in JSON)
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query := `
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// Insert the new version
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insertQuery := `
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INSERT INTO servers (version_id, value)
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VALUES ($1, $2)
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`
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_, err = db.pool.Exec(ctx, query, versionID, valueJSON)
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_, err = db.getExecutor(tx).Exec(ctx, insertQuery, versionID, valueJSON)
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if err != nil {
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return nil, fmt.Errorf("failed to insert server: %w", err)
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}
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@ -367,7 +381,7 @@ func (db *PostgreSQL) CreateServer(ctx context.Context, server *apiv0.ServerJSON
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}
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// UpdateServer updates an existing server record with new server details
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func (db *PostgreSQL) UpdateServer(ctx context.Context, id string, server *apiv0.ServerJSON) (*apiv0.ServerJSON, error) {
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func (db *PostgreSQL) UpdateServer(ctx context.Context, tx pgx.Tx, id string, server *apiv0.ServerJSON) (*apiv0.ServerJSON, error) {
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if ctx.Err() != nil {
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return nil, ctx.Err()
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}
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@ -390,7 +404,7 @@ func (db *PostgreSQL) UpdateServer(ctx context.Context, id string, server *apiv0
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WHERE version_id = $2
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`
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result, err := db.pool.Exec(ctx, query, valueJSON, id)
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result, err := db.getExecutor(tx).Exec(ctx, query, valueJSON, id)
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if err != nil {
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return nil, fmt.Errorf("failed to update server: %w", err)
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}
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@ -402,36 +416,29 @@ func (db *PostgreSQL) UpdateServer(ctx context.Context, id string, server *apiv0
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return server, nil
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}
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// WithPublishLock executes a function with an exclusive advisory lock for publishing a server
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// This prevents race conditions when multiple versions are published concurrently
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func (db *PostgreSQL) WithPublishLock(ctx context.Context, serverName string, fn func(ctx context.Context) error) error {
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// InTransaction executes a function within a database transaction
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func (db *PostgreSQL) InTransaction(ctx context.Context, fn func(ctx context.Context, tx pgx.Tx) error) error {
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if ctx.Err() != nil {
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return ctx.Err()
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}
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// Begin a transaction
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tx, err := db.pool.Begin(ctx)
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if err != nil {
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return fmt.Errorf("failed to begin transaction: %w", err)
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}
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//nolint:contextcheck // Intentionally using separate context for rollback to ensure cleanup even if request is cancelled
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defer func() {
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_ = tx.Rollback(ctx)
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rollbackCtx, cancel := context.WithTimeout(context.Background(), 1*time.Second)
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defer cancel()
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if rbErr := tx.Rollback(rollbackCtx); rbErr != nil && !errors.Is(rbErr, pgx.ErrTxClosed) {
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log.Printf("failed to rollback transaction: %v", rbErr)
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}
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}()
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// Acquire advisory lock based on server name hash
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// Using pg_advisory_xact_lock which auto-releases on transaction end
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lockID := hashServerName(serverName)
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_, err = tx.Exec(ctx, "SELECT pg_advisory_xact_lock($1)", lockID)
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if err != nil {
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return fmt.Errorf("failed to acquire publish lock: %w", err)
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}
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// Execute the function
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if err := fn(ctx); err != nil {
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if err := fn(ctx, tx); err != nil {
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return err
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}
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// Commit the transaction (which also releases the lock)
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if err := tx.Commit(ctx); err != nil {
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return fmt.Errorf("failed to commit transaction: %w", err)
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}
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@ -439,10 +446,26 @@ func (db *PostgreSQL) WithPublishLock(ctx context.Context, serverName string, fn
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return nil
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}
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// AcquirePublishLock acquires an exclusive advisory lock for publishing a server
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// This prevents race conditions when multiple versions are published concurrently
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// Using pg_advisory_xact_lock which auto-releases on transaction end
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func (db *PostgreSQL) AcquirePublishLock(ctx context.Context, tx pgx.Tx, serverName string) error {
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if ctx.Err() != nil {
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return ctx.Err()
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}
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lockID := hashServerName(serverName)
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if _, err := db.getExecutor(tx).Exec(ctx, "SELECT pg_advisory_xact_lock($1)", lockID); err != nil {
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return fmt.Errorf("failed to acquire publish lock: %w", err)
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}
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return nil
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}
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// hashServerName creates a consistent hash of the server name for advisory locking
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// We use FNV-1a hash and mask to 63 bits to fit in PostgreSQL's bigint range
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func hashServerName(name string) int64 {
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// FNV-1a 64-bit hash
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const (
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offset64 = 14695981039346656037
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prime64 = 1099511628211
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@ -452,7 +475,6 @@ func hashServerName(name string) int64 {
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hash ^= uint64(name[i])
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hash *= prime64
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}
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// Use only 63 bits to ensure positive int64
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//nolint:gosec // Intentional conversion with masking to 63 bits
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return int64(hash & 0x7FFFFFFFFFFFFFFF)
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}
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@ -2,42 +2,110 @@ package database
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import (
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"context"
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"crypto/rand"
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"encoding/binary"
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"errors"
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"fmt"
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"testing"
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"time"
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"github.com/jackc/pgx/v5"
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"github.com/jackc/pgx/v5/pgconn"
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"github.com/stretchr/testify/require"
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)
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const (
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// Advisory lock key for database schema initialization
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// Using a fixed key ensures all test processes coordinate on the same lock
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testSchemaLockKey = 123456789
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)
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const templateDBName = "mcp_registry_test_template"
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// NewTestDB creates a new PostgreSQL database connection for testing.
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// It ensures the database schema is initialized once per test run, then just clears data per test.
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// ensureTemplateDB creates a template database with migrations applied
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// Multiple processes may call this, so we handle race conditions
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func ensureTemplateDB(ctx context.Context, adminConn *pgx.Conn) error {
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// Check if template exists
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var exists bool
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err := adminConn.QueryRow(ctx, "SELECT EXISTS(SELECT 1 FROM pg_database WHERE datname = $1)", templateDBName).Scan(&exists)
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if err != nil {
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return fmt.Errorf("failed to check template database: %w", err)
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}
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if exists {
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// Template already exists
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return nil
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}
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// Create template database
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_, err = adminConn.Exec(ctx, fmt.Sprintf("CREATE DATABASE %s", templateDBName))
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if err != nil {
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// Ignore duplicate database name error - another process created it concurrently
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var pgErr *pgconn.PgError
|
||||
if errors.As(err, &pgErr) && pgErr.Code == "23505" && pgErr.ConstraintName == "pg_database_datname_index" {
|
||||
return nil
|
||||
}
|
||||
return fmt.Errorf("failed to create template database: %w", err)
|
||||
}
|
||||
|
||||
// Connect to template and run migrations
|
||||
templateURI := fmt.Sprintf("postgres://mcpregistry:mcpregistry@localhost:5432/%s?sslmode=disable", templateDBName)
|
||||
templateDB, err := NewPostgreSQL(ctx, templateURI)
|
||||
if err != nil {
|
||||
return fmt.Errorf("failed to connect to template database: %w", err)
|
||||
}
|
||||
defer templateDB.Close()
|
||||
|
||||
// Migrations run automatically in NewPostgreSQL
|
||||
return nil
|
||||
}
|
||||
|
||||
// NewTestDB creates an isolated PostgreSQL database for each test by copying a template.
|
||||
// The template database has migrations pre-applied, so each test is fast.
|
||||
// Requires PostgreSQL to be running on localhost:5432 (e.g., via docker-compose).
|
||||
func NewTestDB(t *testing.T) Database {
|
||||
t.Helper()
|
||||
|
||||
// Create context with timeout for database operations
|
||||
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
|
||||
ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
|
||||
defer cancel()
|
||||
|
||||
// Connect to test database
|
||||
connectionURI := "postgres://mcpregistry:mcpregistry@localhost:5432/mcp-registry?sslmode=disable"
|
||||
db, err := NewPostgreSQL(ctx, connectionURI)
|
||||
require.NoError(t, err, "Failed to connect to test PostgreSQL database. Make sure PostgreSQL is running via: docker-compose up -d postgres")
|
||||
// Connect to postgres database
|
||||
adminURI := "postgres://mcpregistry:mcpregistry@localhost:5432/postgres?sslmode=disable"
|
||||
adminConn, err := pgx.Connect(ctx, adminURI)
|
||||
require.NoError(t, err, "Failed to connect to PostgreSQL. Make sure PostgreSQL is running via: docker-compose up -d postgres")
|
||||
defer adminConn.Close(ctx)
|
||||
|
||||
// Initialize schema once per test suite run using advisory locks for cross-process coordination
|
||||
err = initializeTestSchemaWithLock(db)
|
||||
require.NoError(t, err, "Failed to initialize test database schema")
|
||||
// Ensure template database exists with migrations
|
||||
err = ensureTemplateDB(ctx, adminConn)
|
||||
require.NoError(t, err, "Failed to initialize template database")
|
||||
|
||||
// Clear data for this specific test
|
||||
clearTestData(t, db)
|
||||
// Generate unique database name for this test
|
||||
var randomBytes [8]byte
|
||||
_, err = rand.Read(randomBytes[:])
|
||||
require.NoError(t, err, "Failed to generate random database id")
|
||||
randomInt := binary.BigEndian.Uint64(randomBytes[:])
|
||||
dbName := fmt.Sprintf("test_%d", randomInt)
|
||||
|
||||
// Register cleanup function to close database connection
|
||||
// Create test database from template (fast - just copies files)
|
||||
_, err = adminConn.Exec(ctx, fmt.Sprintf("CREATE DATABASE %s TEMPLATE %s", dbName, templateDBName))
|
||||
require.NoError(t, err, "Failed to create test database from template")
|
||||
|
||||
// Register cleanup to drop database
|
||||
t.Cleanup(func() {
|
||||
cleanupCtx, cleanupCancel := context.WithTimeout(context.Background(), 10*time.Second)
|
||||
defer cleanupCancel()
|
||||
|
||||
// Terminate any remaining connections
|
||||
_, _ = adminConn.Exec(cleanupCtx, fmt.Sprintf(
|
||||
"SELECT pg_terminate_backend(pid) FROM pg_stat_activity WHERE datname = '%s' AND pid <> pg_backend_pid()",
|
||||
dbName,
|
||||
))
|
||||
|
||||
// Drop database
|
||||
_, _ = adminConn.Exec(cleanupCtx, fmt.Sprintf("DROP DATABASE IF EXISTS %s", dbName))
|
||||
})
|
||||
|
||||
// Connect to test database (no migrations needed - copied from template)
|
||||
testURI := fmt.Sprintf("postgres://mcpregistry:mcpregistry@localhost:5432/%s?sslmode=disable", dbName)
|
||||
|
||||
db, err := NewPostgreSQL(ctx, testURI)
|
||||
require.NoError(t, err, "Failed to connect to test database")
|
||||
|
||||
// Register cleanup to close connection
|
||||
t.Cleanup(func() {
|
||||
if err := db.Close(); err != nil {
|
||||
t.Logf("Warning: failed to close test database connection: %v", err)
|
||||
|
|
@ -46,92 +114,3 @@ func NewTestDB(t *testing.T) Database {
|
|||
|
||||
return db
|
||||
}
|
||||
|
||||
// initializeTestSchemaWithLock sets up a fresh database schema with all migrations applied
|
||||
// Uses PostgreSQL advisory locks to ensure only one process initializes the schema
|
||||
func initializeTestSchemaWithLock(db Database) error {
|
||||
// Cast to PostgreSQL to access the connection pool
|
||||
pgDB, ok := db.(*PostgreSQL)
|
||||
if !ok {
|
||||
return fmt.Errorf("expected PostgreSQL database instance")
|
||||
}
|
||||
|
||||
ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
|
||||
defer cancel()
|
||||
|
||||
// Acquire advisory lock to coordinate schema initialization across processes
|
||||
_, err := pgDB.pool.Exec(ctx, "SELECT pg_advisory_lock($1)", testSchemaLockKey)
|
||||
if err != nil {
|
||||
return fmt.Errorf("failed to acquire advisory lock: %w", err)
|
||||
}
|
||||
defer func() {
|
||||
// Always release the advisory lock
|
||||
_, _ = pgDB.pool.Exec(context.Background(), "SELECT pg_advisory_unlock($1)", testSchemaLockKey)
|
||||
}()
|
||||
|
||||
// Check if schema already exists (another process may have initialized it)
|
||||
var tableCount int64
|
||||
err = pgDB.pool.QueryRow(ctx, "SELECT count(*) FROM information_schema.tables WHERE table_schema = 'public' AND table_name = 'servers'").Scan(&tableCount)
|
||||
if err != nil {
|
||||
return fmt.Errorf("failed to check if schema exists: %w", err)
|
||||
}
|
||||
|
||||
if tableCount > 0 {
|
||||
// Schema already exists, nothing to do
|
||||
return nil
|
||||
}
|
||||
|
||||
// Initialize the schema
|
||||
return initializeTestSchema(db)
|
||||
}
|
||||
|
||||
// initializeTestSchema sets up a fresh database schema with all migrations applied
|
||||
// This should only be called from initializeTestSchemaWithLock
|
||||
func initializeTestSchema(db Database) error {
|
||||
// Cast to PostgreSQL to access the connection pool
|
||||
pgDB, ok := db.(*PostgreSQL)
|
||||
if !ok {
|
||||
return fmt.Errorf("expected PostgreSQL database instance")
|
||||
}
|
||||
|
||||
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
|
||||
defer cancel()
|
||||
|
||||
// Drop and recreate schema completely fresh
|
||||
_, err := pgDB.pool.Exec(ctx, "DROP SCHEMA public CASCADE; CREATE SCHEMA public;")
|
||||
if err != nil {
|
||||
return fmt.Errorf("failed to reset database schema: %w", err)
|
||||
}
|
||||
|
||||
// Apply all migrations from scratch
|
||||
conn, err := pgDB.pool.Acquire(ctx)
|
||||
if err != nil {
|
||||
return fmt.Errorf("failed to acquire connection for migration: %w", err)
|
||||
}
|
||||
defer conn.Release()
|
||||
|
||||
migrator := NewMigrator(conn.Conn())
|
||||
err = migrator.Migrate(ctx)
|
||||
if err != nil {
|
||||
return fmt.Errorf("failed to run database migrations: %w", err)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// clearTestData removes all data from test tables while preserving schema
|
||||
// This runs before each individual test
|
||||
func clearTestData(t *testing.T, db Database) {
|
||||
t.Helper()
|
||||
|
||||
// Cast to PostgreSQL to access the connection pool
|
||||
pgDB, ok := db.(*PostgreSQL)
|
||||
require.True(t, ok, "Expected PostgreSQL database instance")
|
||||
|
||||
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
|
||||
defer cancel()
|
||||
|
||||
// Clear all data but keep schema intact
|
||||
_, err := pgDB.pool.Exec(ctx, "TRUNCATE TABLE servers RESTART IDENTITY CASCADE")
|
||||
require.NoError(t, err, "Failed to clear test data")
|
||||
}
|
||||
|
|
@ -37,7 +37,7 @@ func (s *Service) ImportFromPath(ctx context.Context, path string) error {
|
|||
|
||||
// Import each server using CreateServer
|
||||
for _, server := range servers {
|
||||
_, err := s.db.CreateServer(ctx, server)
|
||||
_, err := s.db.CreateServer(ctx, nil, server)
|
||||
if err != nil {
|
||||
return fmt.Errorf("failed to import server %s: %w", server.Name, err)
|
||||
}
|
||||
|
|
@ -181,4 +181,4 @@ func convertServerResponseToRecord(response apiv0.ServerJSON) *apiv0.ServerJSON
|
|||
// The response is already in the correct flattened format
|
||||
// Just return a pointer to it
|
||||
return &response
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -57,7 +57,7 @@ func TestImportService_LocalFile(t *testing.T) {
|
|||
require.NoError(t, err)
|
||||
|
||||
// Verify the server was imported
|
||||
servers, _, err := testDB.List(context.Background(), nil, "", 10)
|
||||
servers, _, err := testDB.List(context.Background(), nil, nil, "", 10)
|
||||
require.NoError(t, err)
|
||||
assert.Len(t, servers, 1)
|
||||
assert.Equal(t, "io.github.test/test-server-1", servers[0].Name)
|
||||
|
|
@ -101,7 +101,7 @@ func TestImportService_HTTPFile(t *testing.T) {
|
|||
require.NoError(t, err)
|
||||
|
||||
// Verify the server was imported
|
||||
servers, _, err := testDB.List(context.Background(), nil, "", 10)
|
||||
servers, _, err := testDB.List(context.Background(), nil, nil, "", 10)
|
||||
require.NoError(t, err)
|
||||
assert.Len(t, servers, 1)
|
||||
assert.Equal(t, "io.github.test/http-test-server", servers[0].Name)
|
||||
|
|
@ -187,7 +187,7 @@ func TestImportService_RegistryAPI(t *testing.T) {
|
|||
require.NoError(t, err)
|
||||
|
||||
// Verify both servers were imported
|
||||
servers, _, err := testDB.List(context.Background(), nil, "", 10)
|
||||
servers, _, err := testDB.List(context.Background(), nil, nil, "", 10)
|
||||
require.NoError(t, err)
|
||||
assert.Len(t, servers, 2)
|
||||
|
||||
|
|
|
|||
|
|
@ -7,6 +7,7 @@ import (
|
|||
"time"
|
||||
|
||||
"github.com/google/uuid"
|
||||
"github.com/jackc/pgx/v5"
|
||||
"github.com/modelcontextprotocol/registry/internal/config"
|
||||
"github.com/modelcontextprotocol/registry/internal/database"
|
||||
"github.com/modelcontextprotocol/registry/internal/validators"
|
||||
|
|
@ -41,7 +42,7 @@ func (s *registryServiceImpl) List(filter *database.ServerFilter, cursor string,
|
|||
}
|
||||
|
||||
// Use the database's ListServers method with pagination and filtering
|
||||
serverRecords, nextCursor, err := s.db.List(ctx, filter, cursor, limit)
|
||||
serverRecords, nextCursor, err := s.db.List(ctx, nil, filter, cursor, limit)
|
||||
if err != nil {
|
||||
return nil, "", err
|
||||
}
|
||||
|
|
@ -61,7 +62,7 @@ func (s *registryServiceImpl) GetByVersionID(versionID string) (*apiv0.ServerJSO
|
|||
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
|
||||
defer cancel()
|
||||
|
||||
serverRecord, err := s.db.GetByVersionID(ctx, versionID)
|
||||
serverRecord, err := s.db.GetByVersionID(ctx, nil, versionID)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
|
@ -76,7 +77,7 @@ func (s *registryServiceImpl) GetByServerID(serverID string) (*apiv0.ServerJSON,
|
|||
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
|
||||
defer cancel()
|
||||
|
||||
serverRecord, err := s.db.GetByServerID(ctx, serverID)
|
||||
serverRecord, err := s.db.GetByServerID(ctx, nil, serverID)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
|
@ -91,7 +92,7 @@ func (s *registryServiceImpl) GetByServerIDAndVersion(serverID string, version s
|
|||
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
|
||||
defer cancel()
|
||||
|
||||
serverRecord, err := s.db.GetByServerIDAndVersion(ctx, serverID, version)
|
||||
serverRecord, err := s.db.GetByServerIDAndVersion(ctx, nil, serverID, version)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
|
@ -106,7 +107,7 @@ func (s *registryServiceImpl) GetAllVersionsByServerID(serverID string) ([]apiv0
|
|||
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
|
||||
defer cancel()
|
||||
|
||||
serverRecords, err := s.db.GetAllVersionsByServerID(ctx, serverID)
|
||||
serverRecords, err := s.db.GetAllVersionsByServerID(ctx, nil, serverID)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
|
@ -131,18 +132,22 @@ func (s *registryServiceImpl) Publish(req apiv0.ServerJSON) (*apiv0.ServerJSON,
|
|||
return nil, err
|
||||
}
|
||||
|
||||
// Acquire advisory lock for this server name to prevent race conditions
|
||||
result, err := database.WithPublishLockT(ctx, s.db, req.Name, func(lockCtx context.Context) (*apiv0.ServerJSON, error) {
|
||||
result, err := database.InTransactionT(ctx, s.db, func(txCtx context.Context, tx pgx.Tx) (*apiv0.ServerJSON, error) {
|
||||
publishTime := time.Now()
|
||||
serverJSON := req
|
||||
|
||||
// Acquire advisory lock to prevent concurrent publishes of the same server
|
||||
if err := s.db.AcquirePublishLock(txCtx, tx, serverJSON.Name); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Check for duplicate remote URLs
|
||||
if err := s.validateNoDuplicateRemoteURLs(lockCtx, serverJSON); err != nil {
|
||||
if err := s.validateNoDuplicateRemoteURLs(txCtx, tx, serverJSON); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
filter := &database.ServerFilter{Name: &serverJSON.Name}
|
||||
existingServerVersions, _, err := s.db.List(lockCtx, filter, "", maxServerVersionsPerServer)
|
||||
existingServerVersions, _, err := s.db.List(txCtx, tx, filter, "", maxServerVersionsPerServer)
|
||||
if err != nil && !errors.Is(err, database.ErrNotFound) {
|
||||
return nil, err
|
||||
}
|
||||
|
|
@ -176,18 +181,11 @@ func (s *registryServiceImpl) Publish(req apiv0.ServerJSON) (*apiv0.ServerJSON,
|
|||
) > 0
|
||||
}
|
||||
|
||||
// Mark previous latest as no longer latest BEFORE creating new version
|
||||
// This prevents violating the unique constraint on isLatest
|
||||
// Unmark old latest version if needed
|
||||
if isNewLatest && existingLatest != nil {
|
||||
var existingLatestVersionID string
|
||||
if existingLatest.Meta != nil && existingLatest.Meta.Official != nil {
|
||||
existingLatestVersionID = existingLatest.Meta.Official.VersionID
|
||||
}
|
||||
if existingLatestVersionID != "" {
|
||||
// Update the existing server to set isLatest = false
|
||||
existingLatest.Meta.Official.IsLatest = false
|
||||
existingLatest.Meta.Official.UpdatedAt = time.Now()
|
||||
if _, err := s.db.UpdateServer(lockCtx, existingLatestVersionID, existingLatest); err != nil {
|
||||
if _, err := s.db.UpdateServer(txCtx, tx, existingLatest.Meta.Official.VersionID, existingLatest); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
|
@ -196,13 +194,8 @@ func (s *registryServiceImpl) Publish(req apiv0.ServerJSON) (*apiv0.ServerJSON,
|
|||
// Create complete server with metadata
|
||||
server := s.createServerWithMetadata(serverJSON, existingServerVersions, publishTime, isNewLatest)
|
||||
|
||||
// Create server in database
|
||||
serverRecord, err := s.db.CreateServer(lockCtx, &server)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return serverRecord, nil
|
||||
// Insert new server version
|
||||
return s.db.CreateServer(txCtx, tx, &server)
|
||||
})
|
||||
|
||||
if err != nil {
|
||||
|
|
@ -253,13 +246,13 @@ func (s *registryServiceImpl) createServerWithMetadata(
|
|||
}
|
||||
|
||||
// validateNoDuplicateRemoteURLs checks that no other server is using the same remote URLs
|
||||
func (s *registryServiceImpl) validateNoDuplicateRemoteURLs(ctx context.Context, serverDetail apiv0.ServerJSON) error {
|
||||
func (s *registryServiceImpl) validateNoDuplicateRemoteURLs(ctx context.Context, tx pgx.Tx, serverDetail apiv0.ServerJSON) error {
|
||||
// Check each remote URL in the new server for conflicts
|
||||
for _, remote := range serverDetail.Remotes {
|
||||
// Use filter to find servers with this remote URL
|
||||
filter := &database.ServerFilter{RemoteURL: &remote.URL}
|
||||
|
||||
conflictingServers, _, err := s.db.List(ctx, filter, "", 1000)
|
||||
conflictingServers, _, err := s.db.List(ctx, tx, filter, "", 1000)
|
||||
if err != nil {
|
||||
return fmt.Errorf("failed to check remote URL conflict: %w", err)
|
||||
}
|
||||
|
|
@ -291,45 +284,46 @@ func (s *registryServiceImpl) EditServer(versionID string, req apiv0.ServerJSON)
|
|||
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
|
||||
defer cancel()
|
||||
|
||||
// First get the current server to preserve metadata
|
||||
currentServer, err := s.db.GetByVersionID(ctx, versionID)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Validate the request
|
||||
if err := validators.ValidatePublishRequest(req, s.cfg); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Merge the request with the current server, preserving metadata
|
||||
updatedServer := *currentServer // Copy the current server with all metadata
|
||||
return database.InTransactionT(ctx, s.db, func(txCtx context.Context, tx pgx.Tx) (*apiv0.ServerJSON, error) {
|
||||
// Get the current server to preserve metadata
|
||||
currentServer, err := s.db.GetByVersionID(txCtx, tx, versionID)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Update only the user-modifiable fields from the request
|
||||
updatedServer.Name = req.Name
|
||||
updatedServer.Description = req.Description
|
||||
updatedServer.Version = req.Version
|
||||
updatedServer.Status = req.Status
|
||||
updatedServer.Repository = req.Repository
|
||||
updatedServer.Remotes = req.Remotes
|
||||
updatedServer.Packages = req.Packages
|
||||
// Acquire advisory lock to prevent concurrent edits of servers with same name
|
||||
if err := s.db.AcquirePublishLock(txCtx, tx, currentServer.Name); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Update the UpdatedAt timestamp in metadata
|
||||
if updatedServer.Meta != nil && updatedServer.Meta.Official != nil {
|
||||
updatedServer.Meta.Official.UpdatedAt = time.Now()
|
||||
}
|
||||
// Merge the request with the current server, preserving metadata
|
||||
updatedServer := *currentServer
|
||||
|
||||
// Check for duplicate remote URLs using the updated server
|
||||
if err := s.validateNoDuplicateRemoteURLs(ctx, updatedServer); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
// Update only the user-modifiable fields from the request
|
||||
updatedServer.Name = req.Name
|
||||
updatedServer.Description = req.Description
|
||||
updatedServer.Version = req.Version
|
||||
updatedServer.Status = req.Status
|
||||
updatedServer.Repository = req.Repository
|
||||
updatedServer.Remotes = req.Remotes
|
||||
updatedServer.Packages = req.Packages
|
||||
|
||||
// Update server in database
|
||||
serverRecord, err := s.db.UpdateServer(ctx, versionID, &updatedServer)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
// Update the UpdatedAt timestamp in metadata
|
||||
if updatedServer.Meta != nil && updatedServer.Meta.Official != nil {
|
||||
updatedServer.Meta.Official.UpdatedAt = time.Now()
|
||||
}
|
||||
|
||||
// Return the server record directly
|
||||
return serverRecord, nil
|
||||
// Check for duplicate remote URLs using the updated server
|
||||
if err := s.validateNoDuplicateRemoteURLs(txCtx, tx, updatedServer); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Update server in database
|
||||
return s.db.UpdateServer(txCtx, tx, versionID, &updatedServer)
|
||||
})
|
||||
}
|
||||
|
|
|
|||
|
|
@ -107,7 +107,7 @@ func TestValidateNoDuplicateRemoteURLs(t *testing.T) {
|
|||
ctx := context.Background()
|
||||
impl := service.(*registryServiceImpl)
|
||||
|
||||
err := impl.validateNoDuplicateRemoteURLs(ctx, tt.serverDetail)
|
||||
err := impl.validateNoDuplicateRemoteURLs(ctx, nil, tt.serverDetail)
|
||||
|
||||
if tt.expectError {
|
||||
assert.Error(t, err)
|
||||
|
|
@ -384,7 +384,7 @@ func TestPublishConcurrentVersionsNoRace(t *testing.T) {
|
|||
testDB := database.NewTestDB(t)
|
||||
service := NewRegistryService(testDB, &config.Config{EnableRegistryValidation: false})
|
||||
|
||||
const concurrency = 1 // @Maintainers: Fix this and increase to higher number, previously 100
|
||||
const concurrency = 100
|
||||
results := make([]*apiv0.ServerJSON, concurrency)
|
||||
errors := make([]error, concurrency)
|
||||
|
||||
|
|
@ -419,12 +419,25 @@ func TestPublishConcurrentVersionsNoRace(t *testing.T) {
|
|||
}
|
||||
}
|
||||
|
||||
// Query database to check the final state after all publishes complete
|
||||
// This is necessary because the returned results reflect state at publish time,
|
||||
// but concurrent publishes may have updated the latest flag since then
|
||||
filter := &database.ServerFilter{Name: strPtr("com.example/test-concurrent")}
|
||||
dbResults, _, err := testDB.List(context.Background(), nil, filter, "", 1000)
|
||||
assert.NoError(t, err, "failed to query database")
|
||||
|
||||
latestCount := 0
|
||||
for _, result := range results {
|
||||
if result != nil && result.Meta != nil && result.Meta.Official != nil &&
|
||||
result.Meta.Official.IsLatest {
|
||||
var latestVersion string
|
||||
for _, r := range dbResults {
|
||||
if r.Meta != nil && r.Meta.Official != nil && r.Meta.Official.IsLatest {
|
||||
latestCount++
|
||||
latestVersion = r.Version
|
||||
}
|
||||
}
|
||||
assert.Equal(t, 1, latestCount, "should have exactly one latest version")
|
||||
|
||||
assert.Equal(t, 1, latestCount, "should have exactly one latest version in database, found version: %s", latestVersion)
|
||||
}
|
||||
|
||||
func strPtr(s string) *string {
|
||||
return &s
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue