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repository.go
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repository.go
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// Copyright The Linux Foundation and each contributor to CommunityBridge.
// SPDX-License-Identifier: MIT
package approvals
import (
"errors"
"fmt"
// "math/rand"
"net"
"sync"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/dynamodb"
"github.com/aws/aws-sdk-go/service/dynamodb/dynamodbattribute"
"github.com/aws/aws-sdk-go/service/dynamodb/expression"
log "github.com/communitybridge/easycla/cla-backend-go/logging"
"github.com/sirupsen/logrus"
)
type IRepository interface {
GetApprovalList(approvalID string) (*ApprovalItem, error)
DeleteAll() error
GetApprovalListBySignature(signatureID string) ([]ApprovalItem, error)
AddApprovalList(approvalItem ApprovalItem) error
UpdateApprovalItem(approvalItem ApprovalItem) error
DeleteApprovalList(approvalID string) error
SearchApprovalList(criteria, approvalListName, claGroupID, companyID, signatureID string) ([]ApprovalItem, error)
BatchAddApprovalList(approvalItems []ApprovalItem) error
BatchDeleteApprovalList() error
}
type repository struct {
stage string
dynamoDBClient *dynamodb.DynamoDB
tableName string
}
func NewRepository(stage string, awsSession *session.Session, tableName string) IRepository {
return &repository{
stage: stage,
dynamoDBClient: dynamodb.New(awsSession),
tableName: tableName,
}
}
func (repo *repository) getAll() ([]*ApprovalItem, error) {
f := logrus.Fields{
"functionName": "getAll",
}
log.WithFields(f).Debugf("repository.getAll - fetching all approval lists")
// Get all the records
pageSize := int64(100)
scanInput := &dynamodb.ScanInput{
TableName: aws.String(repo.tableName),
Limit: aws.Int64(pageSize),
}
var results []*ApprovalItem
for {
result, err := repo.dynamoDBClient.Scan(scanInput)
if err != nil {
log.WithFields(f).Warnf("repository.getAll - unable to scan table, error: %+v", err)
return nil, err
}
var items []*ApprovalItem
err = dynamodbattribute.UnmarshalListOfMaps(result.Items, &items)
if err != nil {
log.WithFields(f).Warnf("repository.getAll - unable to unmarshal data from table, error: %+v", err)
return nil, err
}
results = append(results, items...)
if result.LastEvaluatedKey == nil {
break
}
scanInput.ExclusiveStartKey = result.LastEvaluatedKey
}
return results, nil
}
func (repo *repository) DeleteAll() error {
f := logrus.Fields{
"functionName": "DeleteAll",
}
log.WithFields(f).Debugf("repository.DeleteAll - deleting all approval lists")
itemsToDelete, err := repo.getAll()
if err != nil {
log.WithFields(f).Warnf("repository.DeleteAll - unable to fetch data from table, error: %+v", err)
return err
}
log.WithFields(f).Debugf("repository.DeleteAll - deleting %d approval list items", len(itemsToDelete))
// Delete all the records
for _, item := range itemsToDelete {
retry := 0
for {
log.WithFields(f).Debugf("repository.DeleteAll - deleting approval list item: %+v", item)
deleteRequest := &dynamodb.DeleteItemInput{
Key: map[string]*dynamodb.AttributeValue{
"approval_id": {
S: aws.String(item.ApprovalID),
},
},
TableName: aws.String(repo.tableName),
}
_, err = repo.dynamoDBClient.DeleteItem(deleteRequest)
if err != nil {
if aerr, ok := err.(awserr.Error); ok && aerr.Code() == dynamodb.ErrCodeProvisionedThroughputExceededException {
if retry > 5 {
return fmt.Errorf("unable to delete approval list item - retry limit reached, error: %+v", err)
}
retry++
continue
}
return fmt.Errorf("unable to delete approval list item, error: %+v", err)
}
break
}
}
return nil
}
func (repo *repository) UpdateApprovalItem(approvalItem ApprovalItem) error {
f := logrus.Fields{
"functionName": "v2.approvals.repository.UpdateApprovalItem",
"approvalID": approvalItem.ApprovalID,
}
log.WithFields(f).Debugf("updating approval item: %+v", approvalItem)
av, err := dynamodbattribute.MarshalMap(approvalItem)
if err != nil {
log.WithFields(f).Warnf("unable to marshal data, error: %+v", err)
return err
}
_, err = repo.dynamoDBClient.PutItem(&dynamodb.PutItemInput{
TableName: aws.String(repo.tableName),
Item: av,
})
if err != nil {
log.WithFields(f).Warnf("repository.UpdateApprovalItem - unable to update data in table, error: %+v", err)
return err
}
return nil
}
func (repo *repository) GetApprovalList(approvalID string) (*ApprovalItem, error) {
f := logrus.Fields{
"functionName": "GetApprovalList",
"approvalID": approvalID,
}
log.WithFields(f).Debugf("repository.GetApprovalList - fetching approval list by approvalID: %s", approvalID)
result, err := repo.dynamoDBClient.GetItem(&dynamodb.GetItemInput{
TableName: aws.String(repo.tableName),
Key: map[string]*dynamodb.AttributeValue{
"approval_id": {
S: aws.String(approvalID),
},
},
})
if err != nil {
log.WithFields(f).Warnf("repository.GetApprovalList - unable to read data from table, error: %+v", err)
return nil, err
}
if len(result.Item) == 0 {
log.WithFields(f).Warnf("repository.GetApprovalList - no approval list found for approvalID: %s", approvalID)
return nil, errors.New("approval list not found")
}
approvalItem := ApprovalItem{}
err = dynamodbattribute.UnmarshalMap(result.Item, &approvalItem)
if err != nil {
log.WithFields(f).Warnf("repository.GetApprovalList - unable to unmarshal data from table, error: %+v", err)
return nil, err
}
return &approvalItem, nil
}
func exponentialBackoff(attempt int) time.Duration {
const maxBackoff = 30 * time.Second
backoff := time.Duration(1<<uint(attempt)) * time.Second
if backoff > maxBackoff {
backoff = maxBackoff
}
return backoff
}
func (repo *repository) GetApprovalListBySignature(signatureID string) ([]ApprovalItem, error) {
f := logrus.Fields{
"functionName": "GetApprovalListBySignature",
"signatureID": signatureID,
}
log.WithFields(f).Debugf("repository.GetApprovalListBySignature - fetching approval list by signatureID: %s", signatureID)
condition := expression.Key("signature_id").Equal(expression.Value(signatureID))
expr, err := expression.NewBuilder().WithKeyCondition(condition).Build()
if err != nil {
return nil, err
}
pageSize := int64(100)
input := &dynamodb.QueryInput{
TableName: aws.String(repo.tableName),
IndexName: aws.String("signature-id-index"),
KeyConditionExpression: expr.KeyCondition(),
ExpressionAttributeNames: expr.Names(),
ExpressionAttributeValues: expr.Values(),
Limit: aws.Int64(pageSize),
}
var results []ApprovalItem
maxRetries := 5
for attempt := 0; attempt < maxRetries; attempt++ {
output, err := repo.dynamoDBClient.Query(input)
if err != nil {
if netErr, ok := err.(net.Error); ok && netErr.Timeout() {
log.WithFields(f).Warnf("error building expression, error: %+v", err)
} else if awsErr, ok := err.(awserr.Error); ok {
log.WithFields(f).Warnf("error building expression, error: %+v", awsErr)
} else if err.Error() == "connection reset by peer" {
log.WithFields(f).Warnf("error building expression, error: %+v", err)
} else {
return nil, err
}
time.Sleep(exponentialBackoff(attempt))
}
var items []ApprovalItem
err = dynamodbattribute.UnmarshalListOfMaps(output.Items, &items)
if err != nil {
log.WithFields(f).Warnf("error unmarshalling data, error: %+v", err)
return nil, err
}
results = append(results, items...)
if output.LastEvaluatedKey == nil {
break
}
input.ExclusiveStartKey = output.LastEvaluatedKey
}
return results, nil
}
func (repo *repository) BatchDeleteApprovalList() error {
f := logrus.Fields{
"functionName": "v2.BatchDeleteApprovalList",
"tableName": repo.tableName,
}
log.WithFields(f).Debugf("repository.BatchDeleteApprovalList - deleting all approval list items")
itemsToDelete, err := repo.getAll()
startTime := time.Now()
if err != nil {
log.WithFields(f).Warnf("repository.BatchDeleteApprovalList - unable to fetch data from table, error: %+v", err)
return err
}
log.WithFields(f).Debugf("repository.BatchDeleteApprovalList - deleting %d approval list items", len(itemsToDelete))
batchSize := 25
deleted := len(itemsToDelete)
processed := 0
var wg sync.WaitGroup
for num := 0; num < len(itemsToDelete); num += batchSize {
start := num
end := num + batchSize
if end > len(itemsToDelete) {
end = len(itemsToDelete)
}
wg.Add(1)
go func(s, e int) {
defer wg.Done()
var batchWriteItems []*dynamodb.WriteRequest
for _, approvalItem := range itemsToDelete[s:e] {
batchWriteItems = append(batchWriteItems, &dynamodb.WriteRequest{
DeleteRequest: &dynamodb.DeleteRequest{
Key: map[string]*dynamodb.AttributeValue{
"approval_id": {
S: aws.String(approvalItem.ApprovalID),
},
},
},
})
}
input := &dynamodb.BatchWriteItemInput{
RequestItems: map[string][]*dynamodb.WriteRequest{
repo.tableName: batchWriteItems,
},
}
maxAttempts := 3
for attempt := 0; attempt < maxAttempts; attempt++ {
op, err := repo.dynamoDBClient.BatchWriteItem(input)
if err != nil {
if awsErr, ok := err.(awserr.Error); ok && awsErr.Code() == dynamodb.ErrCodeProvisionedThroughputExceededException {
log.WithFields(f).Warnf("repository.BatchDeleteApprovalList - provisioned throughput exceeded, retrying in :%d seconds", exponentialBackoff(attempt))
time.Sleep(exponentialBackoff(attempt))
continue
}
log.WithFields(f).Warnf("repository.BatchDeleteApprovalList - unable to batch delete data from table, error: %+v", err)
return
}
if len(op.UnprocessedItems) != 0 {
log.WithFields(f).Warn("unprocessed items found")
deleted -= len(op.UnprocessedItems)
}
break
}
processed += len(batchWriteItems)
log.WithFields(f).Debugf("repository.BatchDeleteApprovalList - processed %d of %d approval list items", processed, len(itemsToDelete))
}(start, end)
}
log.WithFields(f).Debug("repository.BatchDeleteApprovalList - waiting for batch delete to complete")
wg.Wait()
log.WithFields(f).Debugf("all batches completed: deleted %d records in %s", deleted, time.Since(startTime))
return nil
}
func (repo *repository) BatchAddApprovalList(approvalItems []ApprovalItem) error {
f := logrus.Fields{
"functionName": "BatchAddApprovalList",
"tableName": repo.tableName,
}
log.WithFields(f).Debugf("repository.BatchAddApprovalList - adding %d approval list items", len(approvalItems))
batchSize := 25
processed := 0
inserted := len(approvalItems)
startTime := time.Now()
var wg sync.WaitGroup
for num := 0; num < len(approvalItems); num += batchSize {
start := num
end := num + batchSize
if end > len(approvalItems) {
end = len(approvalItems)
}
wg.Add(1)
go func(s, e int) {
defer wg.Done()
var batchWriteItems []*dynamodb.WriteRequest
for _, approvalItem := range approvalItems[s:e] {
av, err := dynamodbattribute.MarshalMap(approvalItem)
if err != nil {
log.WithFields(f).Warnf("repository.BatchAddApprovalList - unable to marshal data, error: %+v", err)
return
}
batchWriteItems = append(batchWriteItems, &dynamodb.WriteRequest{
PutRequest: &dynamodb.PutRequest{
Item: av,
},
})
}
input := &dynamodb.BatchWriteItemInput{
RequestItems: map[string][]*dynamodb.WriteRequest{
repo.tableName: batchWriteItems,
},
}
maxAttempts := 3
for attempt := 0; attempt < maxAttempts; attempt++ {
op, err := repo.dynamoDBClient.BatchWriteItem(input)
if err != nil {
if awsErr, ok := err.(awserr.Error); ok && awsErr.Code() == dynamodb.ErrCodeProvisionedThroughputExceededException {
log.WithFields(f).Warnf("repository.BatchAddApprovalList - provisioned throughput exceeded, retrying in :%d seconds", exponentialBackoff(attempt))
time.Sleep(exponentialBackoff(attempt))
continue
}
log.WithFields(f).Warnf("repository.BatchAddApprovalList - unable to batch add data to table, error: %+v", err)
return
}
if len(op.UnprocessedItems) != 0 {
log.WithFields(f).Warn("unprocessed items found")
inserted -= len(op.UnprocessedItems)
}
break
}
processed += len(batchWriteItems)
log.WithFields(f).Debugf("repository.BatchAddApprovalList - processed %d of %d approval list items", processed, len(approvalItems))
}(start, end)
}
log.WithFields(f).Debug("repository.BatchAddApprovalList - waiting for batch add to complete")
wg.Wait()
log.WithFields(f).Debugf("all batches completed: inserted %d records in %s", inserted, time.Since(startTime))
return nil
}
func (repo *repository) AddApprovalList(approvalItem ApprovalItem) error {
f := logrus.Fields{
"functionName": "v2.approvals.repository.AddApprovalList",
"approvalID": approvalItem.ApprovalID,
"approvalName": approvalItem.ApprovalName,
"tableName": repo.tableName,
}
log.WithFields(f).Debugf("repository.AddApprovalList - adding approval list: %+v", approvalItem)
av, err := dynamodbattribute.MarshalMap(approvalItem)
if err != nil {
log.WithFields(f).Warnf("repository.AddApprovalList - unable to marshal data, error: %+v", err)
return err
}
const maxRetries = 5
var retryDelay time.Duration = 1
for attempt := 0; attempt < maxRetries; attempt++ {
_, err = repo.dynamoDBClient.PutItem(&dynamodb.PutItemInput{
TableName: aws.String(repo.tableName),
Item: av,
})
if err != nil {
netErr, ok := err.(net.Error)
if ok && netErr.Timeout() {
log.WithFields(f).Warnf("repository.AddApprovalList - timeout error, retrying in %d seconds", retryDelay)
time.Sleep(exponentialBackoff(attempt))
continue
}
awsErr, ok := err.(awserr.Error)
if !ok {
log.WithFields(f).Warnf("repository.AddApprovalList - unable to add data to table, error: %+v", err)
return err
}
switch awsErr.Code() {
case dynamodb.ErrCodeProvisionedThroughputExceededException:
log.WithFields(f).Warnf("repository.AddApprovalList - provisioned throughput exceeded, retrying in %d seconds", retryDelay)
time.Sleep(retryDelay * time.Second)
retryDelay = retryDelay * 2 // exponential backoff
continue
default:
log.WithFields(f).Warnf("repository.AddApprovalList - unable to add data to table, error: %+v", err)
return err
}
}
}
return nil
}
func (repo *repository) DeleteApprovalList(approvalID string) error {
f := logrus.Fields{
"functionName": "DeleteApprovalList",
"approvalID": approvalID,
}
log.WithFields(f).Debugf("repository.DeleteApprovalList - deleting approval list by approvalID: %s", approvalID)
_, err := repo.dynamoDBClient.DeleteItem(&dynamodb.DeleteItemInput{
TableName: aws.String(repo.tableName),
Key: map[string]*dynamodb.AttributeValue{
"approval_id": {
S: aws.String(approvalID),
},
},
})
if err != nil {
log.WithFields(f).Warnf("repository.DeleteApprovalList - unable to delete data from table, error: %+v", err)
return err
}
return nil
}
func (repo *repository) SearchApprovalList(criteria, approvalListName, claGroupID, companyID, signatureID string) ([]ApprovalItem, error) {
f := logrus.Fields{
"functionName": "approvals.repository.SearchApprovalList",
"criteria": criteria,
"approvalName": approvalListName,
"claGroupID": claGroupID,
"companyID": companyID,
"signatureID": signatureID,
}
pageSize := int64(100)
if signatureID == "" {
return nil, errors.New("signatureID is required")
}
if approvalListName == "" {
return nil, errors.New("approvalListName is required")
}
condition := expression.Key("signature_id").Equal(expression.Value(signatureID))
log.WithFields(f).Debugf("searching for approval list by approvalName: %s", approvalListName)
filter := expression.Name("approval_name").Contains(approvalListName)
if criteria != "" {
log.WithFields(f).Debugf("searching for criteria: %s", criteria)
filter = filter.And(expression.Name("approval_criteria").Contains(criteria))
}
if claGroupID != "" {
log.WithFields(f).Debugf("searching for claGroupID: %s", claGroupID)
filter = filter.And(expression.Name("project_id").Equal(expression.Value(claGroupID)))
}
if companyID != "" {
log.WithFields(f).Debugf("searching for companyID: %s", companyID)
filter = filter.And(expression.Name("company_id").Equal(expression.Value(companyID)))
}
expr, err := expression.NewBuilder().WithFilter(filter).WithKeyCondition(condition).Build()
if err != nil {
log.WithFields(f).Warnf("error building expression, error: %+v", err)
return nil, err
}
input := &dynamodb.QueryInput{
TableName: aws.String(repo.tableName),
IndexName: aws.String("signature-id-index"),
KeyConditionExpression: expr.KeyCondition(),
FilterExpression: expr.Filter(),
ExpressionAttributeNames: expr.Names(),
ExpressionAttributeValues: expr.Values(),
Limit: aws.Int64(pageSize),
}
var results []ApprovalItem
for {
output, err := repo.dynamoDBClient.Query(input)
if err != nil {
log.WithFields(f).Warnf("error retrieving approval list, error: %+v", err)
return nil, err
}
var items []ApprovalItem
err = dynamodbattribute.UnmarshalListOfMaps(output.Items, &items)
if err != nil {
log.WithFields(f).Warnf("error unmarshalling data, error: %+v", err)
return nil, err
}
results = append(results, items...)
if output.LastEvaluatedKey == nil {
break
}
input.ExclusiveStartKey = output.LastEvaluatedKey
}
return results, nil
}