/
suppression.go
222 lines (193 loc) · 6.61 KB
/
suppression.go
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package suppression
import (
"bytes"
"fmt"
"strconv"
"github.com/CMSgov/bcda-app/optout"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
)
const (
headerCode = "HDR_BENEDATASHR"
trailerCode = "TRL_BENEDATASHR"
)
const (
headTrailStart, headTrailEnd = 0, 15
recCountStart, recCountEnd = 23, 33
)
// An OptOutImporter imports opt out files based on the provided file handler and saver.
type OptOutImporter struct {
FileHandler optout.OptOutFileHandler
Saver optout.Saver
Logger logrus.FieldLogger
ImportStatusInterval int
}
func (importer OptOutImporter) ImportSuppressionDirectory(path string) (success, failure, skipped int, err error) {
suppresslist, skipped, err := importer.FileHandler.LoadOptOutFiles(path)
if err != nil {
return 0, 0, 0, err
}
if len(*suppresslist) == 0 {
importer.Logger.Info("Failed to find any suppression files in directory")
return 0, 0, skipped, nil
}
for _, metadata := range *suppresslist {
err = importer.validate(metadata)
if err != nil {
fmt.Printf("Failed to validate suppression file: %s.\n", metadata)
importer.Logger.Errorf("Failed to validate suppression file: %s", metadata)
failure++
} else {
if err = importer.ImportSuppressionData(metadata); err != nil {
fmt.Printf("Failed to import suppression file: %s.\n", metadata)
importer.Logger.Errorf("Failed to import suppression file: %s ", metadata)
failure++
} else {
metadata.Imported = true
success++
}
}
}
err = importer.FileHandler.CleanupOptOutFiles(*suppresslist)
if err != nil {
importer.Logger.Error(err)
}
if failure > 0 {
err = errors.New("one or more suppression files failed to import correctly")
importer.Logger.Error(err)
} else {
err = nil
}
return success, failure, skipped, err
}
func (importer OptOutImporter) validate(metadata *optout.OptOutFilenameMetadata) error {
fmt.Printf("Validating suppression file %s...\n", metadata)
importer.Logger.Infof("Validating suppression file %s...", metadata)
count := 0
sc, close, err := importer.FileHandler.OpenFile(metadata)
if err != nil {
fmt.Printf("Could not read file %s.\n", metadata)
err = errors.Wrapf(err, "could not read file %s", metadata)
importer.Logger.Error(err)
return err
}
defer close()
for sc.Scan() {
b := sc.Bytes()
metaInfo := string(bytes.TrimSpace(b[headTrailStart:headTrailEnd]))
if count == 0 {
if metaInfo != headerCode {
// invalid file header found
fmt.Printf("Invalid file header for file: %s.\n", metadata.FilePath)
err := fmt.Errorf("invalid file header for file: %s", metadata.FilePath)
importer.Logger.Error(err)
return err
}
count++
continue
}
if metaInfo != trailerCode {
count++
} else {
// trailer info
expectedCount, err := strconv.Atoi(string(bytes.TrimSpace(b[recCountStart:recCountEnd])))
if err != nil {
fmt.Printf("Failed to parse record count from file: %s.\n", metadata.FilePath)
err = fmt.Errorf("failed to parse record count from file: %s", metadata.FilePath)
importer.Logger.Error(err)
return err
}
// subtract the single count from the header
count--
if count != expectedCount {
fmt.Printf("Incorrect number of records found from file: '%s'. Expected record count: %d, Actual record count: %d.\n", metadata.FilePath, expectedCount, count)
err = fmt.Errorf("incorrect number of records found from file: '%s'. Expected record count: %d, Actual record count: %d", metadata.FilePath, expectedCount, count)
importer.Logger.Error(err)
return err
}
}
}
fmt.Printf("Successfully validated suppression file %s.\n", metadata)
importer.Logger.Infof("Successfully validated suppression file %s.", metadata)
return nil
}
func (importer OptOutImporter) ImportSuppressionData(metadata *optout.OptOutFilenameMetadata) error {
err := importer.importSuppressionMetadata(metadata, func(fileID uint, b []byte) error {
suppression, err := optout.ParseRecord(metadata, b)
if err != nil {
importer.Logger.Error(err)
return err
}
if err = importer.Saver.SaveOptOutRecord(*suppression); err != nil {
fmt.Println("Could not create suppression record.")
err = errors.Wrap(err, "could not create suppression record")
importer.Logger.Error(err)
return err
}
return nil
})
if err != nil {
importer.updateImportStatus(metadata, optout.ImportFail)
return err
}
importer.updateImportStatus(metadata, optout.ImportComplete)
return nil
}
func (importer OptOutImporter) importSuppressionMetadata(metadata *optout.OptOutFilenameMetadata, importFunc func(uint, []byte) error) error {
fmt.Printf("Importing suppression file %s...\n", metadata)
importer.Logger.Infof("Importing suppression file %s...", metadata)
var (
headTrailStart, headTrailEnd = 0, 15
err error
)
suppressionMetaFile := optout.OptOutFile{
Name: metadata.Name,
Timestamp: metadata.Timestamp,
ImportStatus: optout.ImportInprog,
}
if suppressionMetaFile.ID, err = importer.Saver.SaveFile(suppressionMetaFile); err != nil {
fmt.Printf("Could not create suppression file record for file: %s. \n", metadata)
err = errors.Wrapf(err, "could not create suppression file record for file: %s.", metadata)
importer.Logger.Error(err)
return err
}
metadata.FileID = suppressionMetaFile.ID
importedCount := 0
sc, close, err := importer.FileHandler.OpenFile(metadata)
if err != nil {
fmt.Printf("Could not read file %s.\n", metadata)
err = errors.Wrapf(err, "could not read file %s", metadata)
importer.Logger.Error(err)
return err
}
defer close()
for sc.Scan() {
b := sc.Bytes()
if len(bytes.TrimSpace(b)) > 0 {
metaInfo := string(bytes.TrimSpace(b[headTrailStart:headTrailEnd]))
if metaInfo == headerCode || metaInfo == trailerCode {
continue
}
err = importFunc(suppressionMetaFile.ID, b)
if err != nil {
importer.Logger.Error(err)
return err
}
importedCount++
if importedCount%importer.ImportStatusInterval == 0 {
fmt.Printf("Suppression records imported: %d\n", importedCount)
}
}
}
successMsg := fmt.Sprintf("Successfully imported %d records from suppression file %s.", importedCount, metadata)
fmt.Println(successMsg)
importer.Logger.Infof(successMsg)
return nil
}
func (importer OptOutImporter) updateImportStatus(metadata *optout.OptOutFilenameMetadata, status string) {
if err := importer.Saver.UpdateImportStatus(*metadata, status); err != nil {
fmt.Printf("Could not update suppression file record for file_id: %s. \n", metadata.String())
err = errors.Wrapf(err, "could not update suppression file record for file_id: %s.", metadata.String())
importer.Logger.Error(err)
}
}