f1a0830c51
Implements the K8s-native Go API service per the plan architecture: - HTTP server with graceful shutdown and env-var configuration - PostgreSQL schema (bots, matches, match_participants, jobs, rating_history) - Health/ready endpoints checking PostgreSQL and Valkey connectivity - Bot registration with health check, HMAC secret gen, AES-256-GCM encryption - Key rotation and bot status endpoints - Job claim via Valkey BRPOP, result submission with Glicko-2 rating update - Glicko-2 rating system: multi-player pairwise, Illinois volatility algorithm - Background tickers: matchmaker (1m), health checker (15m), stale job reaper (5m) - Worker API key authentication (Bearer/X-API-Key) - Dockerfile, K8s Deployment (2 replicas), ClusterIP Service - 30 unit tests covering Glicko-2, crypto, config, and handlers Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
89 lines
2 KiB
Go
89 lines
2 KiB
Go
package main
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import (
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"crypto/aes"
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"crypto/cipher"
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"crypto/rand"
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"encoding/hex"
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"fmt"
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"io"
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)
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func generateID(prefix string, nBytes int) (string, error) {
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b := make([]byte, nBytes)
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if _, err := io.ReadFull(rand.Reader, b); err != nil {
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return "", err
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}
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return prefix + hex.EncodeToString(b), nil
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}
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func generateSecret() (string, error) {
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b := make([]byte, 32) // 256-bit
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if _, err := io.ReadFull(rand.Reader, b); err != nil {
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return "", err
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}
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return hex.EncodeToString(b), nil
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}
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func encryptSecret(plaintext, keyHex string) (string, error) {
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key, err := hex.DecodeString(keyHex)
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if err != nil {
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return "", fmt.Errorf("decode key: %w", err)
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}
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if len(key) != 32 {
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return "", fmt.Errorf("encryption key must be 32 bytes (64 hex chars)")
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}
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block, err := aes.NewCipher(key)
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if err != nil {
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return "", err
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}
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aead, err := cipher.NewGCM(block)
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if err != nil {
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return "", err
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}
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nonce := make([]byte, aead.NonceSize())
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if _, err := io.ReadFull(rand.Reader, nonce); err != nil {
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return "", err
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}
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ciphertext := aead.Seal(nonce, nonce, []byte(plaintext), nil)
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return hex.EncodeToString(ciphertext), nil
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}
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func decryptSecret(ciphertextHex, keyHex string) (string, error) {
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key, err := hex.DecodeString(keyHex)
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if err != nil {
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return "", fmt.Errorf("decode key: %w", err)
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}
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if len(key) != 32 {
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return "", fmt.Errorf("encryption key must be 32 bytes (64 hex chars)")
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}
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ciphertext, err := hex.DecodeString(ciphertextHex)
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if err != nil {
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return "", fmt.Errorf("decode ciphertext: %w", err)
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}
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block, err := aes.NewCipher(key)
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if err != nil {
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return "", err
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}
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aead, err := cipher.NewGCM(block)
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if err != nil {
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return "", err
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}
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nonceSize := aead.NonceSize()
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if len(ciphertext) < nonceSize {
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return "", fmt.Errorf("ciphertext too short")
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}
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nonce, ciphertext := ciphertext[:nonceSize], ciphertext[nonceSize:]
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plaintext, err := aead.Open(nil, nonce, ciphertext, nil)
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if err != nil {
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return "", err
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}
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return string(plaintext), nil
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}
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