//GetResources returns specified resources without calling non in_transaction events
func GetResources(context middleware.Context, dataStore db.DB, resourceSchema *schema.Schema, filter map[string]interface{}, paginator *pagination.Paginator) error {
return InTransaction(
context, dataStore,
transaction.GetIsolationLevel(resourceSchema, schema.ActionRead),
func() error {
return GetResourcesInTransaction(context, resourceSchema, filter, paginator)
},
)
}
// DeleteResource deletes the resource specified by the schema and ID
func DeleteResource(context middleware.Context,
dataStore db.DB,
resourceSchema *schema.Schema,
resourceID string,
) error {
context["id"] = resourceID
environmentManager := extension.GetManager()
environment, ok := environmentManager.GetEnvironment(resourceSchema.ID)
if !ok {
return fmt.Errorf("No environment for schema")
}
auth := context["auth"].(schema.Authorization)
policy, err := loadPolicy(context, "delete", strings.Replace(resourceSchema.GetSingleURL(), ":id", resourceID, 1), auth)
if err != nil {
return err
}
context["policy"] = policy
preTransaction, err := dataStore.Begin()
if err != nil {
return fmt.Errorf("cannot create transaction: %v", err)
}
tenantIDs := policy.GetTenantIDFilter(schema.ActionDelete, auth.TenantID())
filter := transaction.IDFilter(resourceID)
if tenantIDs != nil {
filter["tenant_id"] = tenantIDs
}
resource, fetchErr := preTransaction.Fetch(resourceSchema, filter)
preTransaction.Close()
if resource != nil {
context["resource"] = resource.Data()
}
if err := extension.HandleEvent(context, environment, "pre_delete"); err != nil {
return err
}
if fetchErr != nil {
return ResourceError{err, "", NotFound}
}
if err := InTransaction(
context, dataStore,
transaction.GetIsolationLevel(resourceSchema, schema.ActionDelete),
func() error {
return DeleteResourceInTransaction(context, resourceSchema, resourceID)
},
); err != nil {
return err
}
if err := extension.HandleEvent(context, environment, "post_delete"); err != nil {
return err
}
return nil
}
// GetSingleResource returns the resource specified by the schema and ID
func GetSingleResource(context middleware.Context, dataStore db.DB, resourceSchema *schema.Schema, resourceID string) error {
context["id"] = resourceID
auth := context["auth"].(schema.Authorization)
policy, err := loadPolicy(context, "read", strings.Replace(resourceSchema.GetSingleURL(), ":id", resourceID, 1), auth)
if err != nil {
return err
}
context["policy"] = policy
environmentManager := extension.GetManager()
environment, ok := environmentManager.GetEnvironment(resourceSchema.ID)
if !ok {
return fmt.Errorf("No environment for schema")
}
if err := extension.HandleEvent(context, environment, "pre_show"); err != nil {
return err
}
if rawResponse, ok := context["response"]; ok {
if _, ok := rawResponse.(map[string]interface{}); ok {
return nil
}
return fmt.Errorf("extension returned invalid JSON: %v", rawResponse)
}
if err := InTransaction(
context, dataStore,
transaction.GetIsolationLevel(resourceSchema, schema.ActionRead),
func() error {
return GetSingleResourceInTransaction(context, resourceSchema, resourceID, policy.GetTenantIDFilter(schema.ActionRead, auth.TenantID()))
},
); err != nil {
return err
}
if err := extension.HandleEvent(context, environment, "post_show"); err != nil {
return err
}
if err := ApplyPolicyForResource(context, resourceSchema); err != nil {
return ResourceError{err, "", NotFound}
}
return nil
}
// UpdateResource updates the resource specified by the schema and ID using the dataMap
func UpdateResource(
context middleware.Context,
dataStore db.DB, identityService middleware.IdentityService,
resourceSchema *schema.Schema,
resourceID string, dataMap map[string]interface{},
) error {
context["id"] = resourceID
//load environment
environmentManager := extension.GetManager()
environment, ok := environmentManager.GetEnvironment(resourceSchema.ID)
if !ok {
return fmt.Errorf("No environment for schema")
}
auth := context["auth"].(schema.Authorization)
//load policy
policy, err := loadPolicy(context, "update", strings.Replace(resourceSchema.GetSingleURL(), ":id", resourceID, 1), auth)
if err != nil {
return err
}
context["policy"] = policy
//fillup default values
if tenantID, ok := dataMap["tenant_id"]; ok && tenantID != nil {
dataMap["tenant_name"], err = identityService.GetTenantName(tenantID.(string))
}
if err != nil {
return ResourceError{err, err.Error(), Unauthorized}
}
//check policy
err = policy.Check(schema.ActionUpdate, auth, dataMap)
delete(dataMap, "tenant_name")
if err != nil {
return ResourceError{err, err.Error(), Unauthorized}
}
context["resource"] = dataMap
if err := extension.HandleEvent(context, environment, "pre_update"); err != nil {
return err
}
if resourceData, ok := context["resource"].(map[string]interface{}); ok {
dataMap = resourceData
}
if err := InTransaction(
context, dataStore,
transaction.GetIsolationLevel(resourceSchema, schema.ActionUpdate),
func() error {
return UpdateResourceInTransaction(context, resourceSchema, resourceID, dataMap, policy.GetTenantIDFilter(schema.ActionUpdate, auth.TenantID()))
},
); err != nil {
return err
}
if err := extension.HandleEvent(context, environment, "post_update"); err != nil {
return err
}
if err := ApplyPolicyForResource(context, resourceSchema); err != nil {
return ResourceError{err, "", NotFound}
}
return nil
}
// CreateResource creates the resource specified by the schema and dataMap
func CreateResource(
context middleware.Context,
dataStore db.DB,
identityService middleware.IdentityService,
resourceSchema *schema.Schema,
dataMap map[string]interface{},
) error {
manager := schema.GetManager()
// Load environment
environmentManager := extension.GetManager()
environment, ok := environmentManager.GetEnvironment(resourceSchema.ID)
if !ok {
return fmt.Errorf("No environment for schema")
}
auth := context["auth"].(schema.Authorization)
//LoadPolicy
policy, err := loadPolicy(context, "create", resourceSchema.GetPluralURL(), auth)
if err != nil {
return err
}
_, err = resourceSchema.GetPropertyByID("tenant_id")
if _, ok := dataMap["tenant_id"]; err == nil && !ok {
dataMap["tenant_id"] = context["tenant_id"]
}
if tenantID, ok := dataMap["tenant_id"]; ok && tenantID != nil {
dataMap["tenant_name"], err = identityService.GetTenantName(tenantID.(string))
if err != nil {
return ResourceError{err, err.Error(), Unauthorized}
}
}
//Apply policy for api input
err = policy.Check(schema.ActionCreate, auth, dataMap)
if err != nil {
return ResourceError{err, err.Error(), Unauthorized}
}
delete(dataMap, "tenant_name")
// apply property filter
err = policy.ApplyPropertyConditionFilter(schema.ActionCreate, dataMap, nil)
if err != nil {
return ResourceError{err, err.Error(), Unauthorized}
}
context["resource"] = dataMap
if id, ok := dataMap["id"]; !ok || id == "" {
dataMap["id"] = uuid.NewV4().String()
}
context["id"] = dataMap["id"]
if err := extension.HandleEvent(context, environment, "pre_create"); err != nil {
return err
}
if resourceData, ok := context["resource"].(map[string]interface{}); ok {
dataMap = resourceData
}
//Validation
err = resourceSchema.ValidateOnCreate(dataMap)
if err != nil {
return ResourceError{err, fmt.Sprintf("Validation error: %s", err), WrongData}
}
resource, err := manager.LoadResource(resourceSchema.ID, dataMap)
if err != nil {
return err
}
//Fillup default
err = resource.PopulateDefaults()
if err != nil {
return err
}
context["resource"] = resource.Data()
if err := InTransaction(
context, dataStore,
transaction.GetIsolationLevel(resourceSchema, schema.ActionCreate),
func() error {
return CreateResourceInTransaction(context, resource)
},
); err != nil {
return err
}
if err := extension.HandleEvent(context, environment, "post_create"); err != nil {
return err
}
if err := ApplyPolicyForResource(context, resourceSchema); err != nil {
return ResourceError{err, "", Unauthorized}
}
return nil
}
//MonitoringUpdate updates the state in the db based on the sync event
func MonitoringUpdate(response *gohan_sync.Event, server *Server) error {
dataStore := server.db
schemaPath := "/" + strings.TrimPrefix(response.Key, monitoringPrefix)
var curSchema = schema.GetSchemaByPath(schemaPath)
if curSchema == nil || !curSchema.StateVersioning() {
log.Debug("Monitoring update on unexpected path '%s'", schemaPath)
return nil
}
resourceID := curSchema.GetResourceIDFromPath(schemaPath)
tx, err := dataStore.Begin()
if err != nil {
return err
}
defer tx.Close()
err = tx.SetIsolationLevel(transaction.GetIsolationLevel(curSchema, MonitoringUpdateEventName))
if err != nil {
return err
}
curResource, err := tx.Fetch(curSchema, transaction.IDFilter(resourceID))
if err != nil {
return err
}
resourceState, err := tx.StateFetch(curSchema, transaction.IDFilter(resourceID))
if err != nil {
return err
}
if resourceState.ConfigVersion != resourceState.StateVersion {
return nil
}
var ok bool
monitoringVersion, ok := response.Data["version"].(float64)
if !ok {
return fmt.Errorf("No version in monitoring information")
}
if resourceState.ConfigVersion != int64(monitoringVersion) {
return nil
}
resourceState.Monitoring, ok = response.Data["monitoring"].(string)
if !ok {
return fmt.Errorf("No monitoring in monitoring information")
}
environmentManager := extension.GetManager()
environment, haveEnvironment := environmentManager.GetEnvironment(curSchema.ID)
context := map[string]interface{}{}
context["resource"] = curResource.Data()
context["schema"] = curSchema
context["monitoring"] = resourceState.Monitoring
context["transaction"] = tx
if haveEnvironment {
if err := extension.HandleEvent(context, environment, "pre_monitoring_update_in_transaction"); err != nil {
return err
}
}
err = tx.StateUpdate(curResource, &resourceState)
if err != nil {
return err
}
if haveEnvironment {
if err := extension.HandleEvent(context, environment, "post_monitoring_update_in_transaction"); err != nil {
return err
}
}
return tx.Commit()
}
//StateUpdate updates the state in the db based on the sync event
func StateUpdate(response *gohan_sync.Event, server *Server) error {
dataStore := server.db
schemaPath := "/" + strings.TrimPrefix(response.Key, statePrefix)
var curSchema = schema.GetSchemaByPath(schemaPath)
if curSchema == nil || !curSchema.StateVersioning() {
log.Debug("State update on unexpected path '%s'", schemaPath)
return nil
}
resourceID := curSchema.GetResourceIDFromPath(schemaPath)
tx, err := dataStore.Begin()
if err != nil {
return err
}
defer tx.Close()
err = tx.SetIsolationLevel(transaction.GetIsolationLevel(curSchema, StateUpdateEventName))
if err != nil {
return err
}
curResource, err := tx.Fetch(curSchema, transaction.IDFilter(resourceID))
if err != nil {
return err
}
resourceState, err := tx.StateFetch(curSchema, transaction.IDFilter(resourceID))
if err != nil {
return err
}
if resourceState.StateVersion == resourceState.ConfigVersion {
return nil
}
stateVersion, ok := response.Data["version"].(float64)
if !ok {
return fmt.Errorf("No version in state information")
}
oldStateVersion := resourceState.StateVersion
resourceState.StateVersion = int64(stateVersion)
if resourceState.StateVersion < oldStateVersion {
return nil
}
if newError, ok := response.Data["error"].(string); ok {
resourceState.Error = newError
}
if newState, ok := response.Data["state"].(string); ok {
resourceState.State = newState
}
environmentManager := extension.GetManager()
environment, haveEnvironment := environmentManager.GetEnvironment(curSchema.ID)
context := map[string]interface{}{}
if haveEnvironment {
serviceAuthorization, _ := server.keystoneIdentity.GetServiceAuthorization()
context["catalog"] = serviceAuthorization.Catalog()
context["auth_token"] = serviceAuthorization.AuthToken()
context["resource"] = curResource.Data()
context["schema"] = curSchema
context["state"] = response.Data
context["config_version"] = resourceState.ConfigVersion
context["transaction"] = tx
if err := extension.HandleEvent(context, environment, "pre_state_update_in_transaction"); err != nil {
return err
}
}
err = tx.StateUpdate(curResource, &resourceState)
if err != nil {
return err
}
if haveEnvironment {
if err := extension.HandleEvent(context, environment, "post_state_update_in_transaction"); err != nil {
return err
}
}
return tx.Commit()
}
