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v1.go
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v1.go
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package database
import (
"database/sql"
"errors"
"fmt"
"os"
"reflect"
"sort"
"sync"
"time"
"github.com/getkin/kin-openapi/openapi3"
_ "github.com/mattn/go-sqlite3"
"github.com/wallarm/api-firewall/internal/platform/loader"
)
const currentSQLSchemaVersionV1 = 1
type SpecificationEntryV1 struct {
SchemaID int `db:"schema_id"`
SchemaVersion string `db:"schema_version"`
SchemaFormat string `db:"schema_format"`
SchemaContent string `db:"schema_content"`
}
type SQLLiteV1 struct {
isReady bool
RawSpecs map[int]*SpecificationEntryV1
LastUpdate time.Time
OpenAPISpec map[int]*openapi3.T
lock *sync.RWMutex
}
func getSchemaVersions(dbSpecs DBOpenAPILoader) map[int]string {
result := make(map[int]string)
schemaIDs := dbSpecs.SchemaIDs()
for _, schemaID := range schemaIDs {
result[schemaID] = dbSpecs.SpecificationVersion(schemaID)
}
return result
}
func NewOpenAPIDBV1(dbStoragePath string) (DBOpenAPILoader, error) {
sqlObj := SQLLiteV1{
lock: &sync.RWMutex{},
RawSpecs: make(map[int]*SpecificationEntryV1),
OpenAPISpec: make(map[int]*openapi3.T),
isReady: true,
}
var err error
sqlObj.isReady, err = sqlObj.Load(dbStoragePath)
return &sqlObj, err
}
func (s *SQLLiteV1) Load(dbStoragePath string) (bool, error) {
entries := make(map[int]*SpecificationEntryV1)
specs := make(map[int]*openapi3.T)
var parsingErrs error
var isReady bool
currentDBPath := dbStoragePath
if currentDBPath == "" {
currentDBPath = fmt.Sprintf("/var/lib/wallarm-api/%d/wallarm_api.db", currentSQLSchemaVersionV1)
}
// check if file exists
if _, err := os.Stat(currentDBPath); errors.Is(err, os.ErrNotExist) {
return isReady, err
}
db, err := sql.Open("sqlite3", currentDBPath)
if err != nil {
return isReady, err
}
defer db.Close()
rows, err := db.Query("select schema_id,schema_version,schema_format,schema_content from openapi_schemas")
if err != nil {
return isReady, err
}
defer rows.Close()
for rows.Next() {
entry := SpecificationEntryV1{}
err = rows.Scan(&entry.SchemaID, &entry.SchemaVersion, &entry.SchemaFormat, &entry.SchemaContent)
if err != nil {
return isReady, err
}
entries[entry.SchemaID] = &entry
}
if err := rows.Err(); err != nil {
return isReady, err
}
s.RawSpecs = entries
s.LastUpdate = time.Now().UTC()
for schemaID, spec := range s.RawSpecs {
parsedSpec, err := loader.ParseOAS(getSpecBytes(spec.SchemaContent), spec.SchemaVersion, schemaID)
if err != nil {
parsingErrs = errors.Join(parsingErrs, err)
delete(s.RawSpecs, schemaID)
continue
}
specs[spec.SchemaID] = parsedSpec
}
s.lock.Lock()
defer s.lock.Unlock()
s.RawSpecs = entries
s.OpenAPISpec = specs
isReady = true
return isReady, parsingErrs
}
func (s *SQLLiteV1) Specification(schemaID int) *openapi3.T {
s.lock.RLock()
defer s.lock.RUnlock()
spec, ok := s.OpenAPISpec[schemaID]
if !ok {
return nil
}
return spec
}
func (s *SQLLiteV1) SpecificationRaw(schemaID int) interface{} {
s.lock.RLock()
defer s.lock.RUnlock()
rawSpec, ok := s.RawSpecs[schemaID]
if !ok {
return nil
}
return rawSpec
}
func (s *SQLLiteV1) SpecificationRawContent(schemaID int) []byte {
s.lock.RLock()
defer s.lock.RUnlock()
rawSpec, ok := s.RawSpecs[schemaID]
if !ok {
return nil
}
return getSpecBytes(rawSpec.SchemaContent)
}
func (s *SQLLiteV1) SpecificationVersion(schemaID int) string {
s.lock.RLock()
defer s.lock.RUnlock()
rawSpec, ok := s.RawSpecs[schemaID]
if !ok {
return ""
}
return rawSpec.SchemaVersion
}
func (s *SQLLiteV1) IsLoaded(schemaID int) bool {
s.lock.RLock()
defer s.lock.RUnlock()
_, ok := s.OpenAPISpec[schemaID]
return ok
}
func (s *SQLLiteV1) SchemaIDs() []int {
s.lock.RLock()
defer s.lock.RUnlock()
var schemaIDs = make([]int, 0)
for _, spec := range s.RawSpecs {
schemaIDs = append(schemaIDs, spec.SchemaID)
}
sort.Ints(schemaIDs)
return schemaIDs
}
func (s *SQLLiteV1) IsReady() bool {
s.lock.RLock()
defer s.lock.RUnlock()
return s.isReady
}
func (s *SQLLiteV1) Version() int {
return currentSQLSchemaVersionV1
}
func (s *SQLLiteV1) AfterLoad(dbStoragePath string) error {
return nil
}
func (s *SQLLiteV1) ShouldUpdate(newStorage DBOpenAPILoader) bool {
beforeUpdateSpecs := getSchemaVersions(s)
afterUpdateSpecs := getSchemaVersions(newStorage)
if !reflect.DeepEqual(beforeUpdateSpecs, afterUpdateSpecs) {
return true
}
return false
}