/
databases.go
337 lines (288 loc) · 9.67 KB
/
databases.go
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package actions
import (
"fmt"
"log"
"strconv"
"github.com/YaleSpinup/apierror"
rdsapi "github.com/YaleSpinup/rds-api/pkg/rds"
"github.com/pkg/errors"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/service/rds"
"github.com/gobuffalo/buffalo"
)
// DatabasesList gets a list of databases for a given account
// If the `all=true` parameter is passed it will return a list of clusters in addition to instances.
func (s *server) DatabasesList(c buffalo.Context) error {
// if all param is given, we'll return information about both instances and clusters
// otherwise, only database instances will be returned
all, _ := strconv.ParseBool(c.Param("all"))
accountId := s.mapAccountNumber(c.Param("account"))
role := fmt.Sprintf("arn:aws:iam::%s:role/%s", accountId, s.session.RoleName)
policy, err := generatePolicy("rds:DescribeDBInstances")
if err != nil {
return handleError(c, err)
}
session, err := s.assumeRole(
c,
s.session.ExternalID,
role,
policy,
"arn:aws:iam::aws:policy/AmazonRDSReadOnlyAccess",
)
if err != nil {
msg := fmt.Sprintf("failed to assume role in account: %s", accountId)
return handleError(c, apierror.New(apierror.ErrForbidden, msg, err))
}
rdsClient := rdsapi.NewSession(session.Session, s.defaultConfig)
var clustersOutput *rds.DescribeDBClustersOutput
var instancesOutput *rds.DescribeDBInstancesOutput
if all {
if clustersOutput, err = rdsClient.Service.DescribeDBClustersWithContext(c, &rds.DescribeDBClustersInput{}); err != nil {
log.Println(err.Error())
}
}
instancesOutput, err = rdsClient.Service.DescribeDBInstancesWithContext(c, &rds.DescribeDBInstancesInput{})
if err != nil {
return handleError(c, err)
}
output := struct {
*rds.DescribeDBClustersOutput
*rds.DescribeDBInstancesOutput
}{
clustersOutput,
instancesOutput,
}
return c.Render(200, r.JSON(output))
}
// DatabasesGet gets details about a specific database
// If the `all=true` parameter is passed it will return a list of clusters in addition to instances.
func (s *server) DatabasesGet(c buffalo.Context) error {
// if all param is given, we'll return information about both instances and clusters
// otherwise, only database instances will be searched
all, _ := strconv.ParseBool(c.Param("all"))
accountId := s.mapAccountNumber(c.Param("account"))
role := fmt.Sprintf("arn:aws:iam::%s:role/%s", accountId, s.session.RoleName)
policy, err := generatePolicy("rds:DescribeDBInstances")
if err != nil {
return handleError(c, err)
}
session, err := s.assumeRole(
c,
s.session.ExternalID,
role,
policy,
"arn:aws:iam::aws:policy/AmazonRDSReadOnlyAccess",
)
if err != nil {
msg := fmt.Sprintf("failed to assume role in account: %s", accountId)
return handleError(c, apierror.New(apierror.ErrForbidden, msg, err))
}
rdsClient := rdsapi.NewSession(session.Session, s.defaultConfig)
var clustersOutput *rds.DescribeDBClustersOutput
var instancesOutput *rds.DescribeDBInstancesOutput
clusterNotFound := true
if all {
// search clusters for the given db name
clusterNotFound = false
clustersInput := &rds.DescribeDBClustersInput{
DBClusterIdentifier: aws.String(c.Param("db")),
}
if clustersOutput, err = rdsClient.Service.DescribeDBClustersWithContext(c, clustersInput); err != nil {
log.Println(err.Error())
if aerr, ok := err.(awserr.Error); ok {
if aerr.Code() == rds.ErrCodeDBClusterNotFoundFault {
clusterNotFound = true
}
}
}
}
// search instances for the given db name
instancesInput := &rds.DescribeDBInstancesInput{
DBInstanceIdentifier: aws.String(c.Param("db")),
}
if instancesOutput, err = rdsClient.Service.DescribeDBInstancesWithContext(c, instancesInput); err != nil {
log.Println(err.Error())
if aerr, ok := err.(awserr.Error); ok {
if aerr.Code() == rds.ErrCodeDBInstanceNotFoundFault {
if clusterNotFound {
return c.Error(404, aerr)
}
} else {
return c.Error(400, aerr)
}
}
if clusterNotFound {
return err
}
}
output := struct {
*rds.DescribeDBClustersOutput
*rds.DescribeDBInstancesOutput
}{
clustersOutput,
instancesOutput,
}
return c.Render(200, r.JSON(output))
}
// DatabasesPost creates a database in a given account
func (s *server) DatabasesPost(c buffalo.Context) error {
req := DatabaseCreateRequest{}
if err := c.Bind(&req); err != nil {
log.Println(err)
return c.Error(400, err)
}
if req.Cluster == nil && req.Instance == nil {
return c.Error(400, errors.New("Bad request: specify Cluster or Instance in request"))
}
accountId := s.mapAccountNumber(c.Param("account"))
role := fmt.Sprintf("arn:aws:iam::%s:role/%s", accountId, s.session.RoleName)
policy, err := generatePolicy("rds:DescribeDBClusters", "rds:ModifyDBSnapshot", "rds:AddTagsToResource", "rds:DescribeDBSnapshots", "rds:RestoreDBClusterFromSnapshot", "rds:CreateDBInstance", "rds:CreateDBCluster", "rds:DeleteDBCluster", "rds:RestoreDBInstanceFromDBSnapshot")
if err != nil {
return handleError(c, err)
}
session, err := s.assumeRole(
c,
s.session.ExternalID,
role,
policy,
"arn:aws:iam::aws:policy/AmazonRDSReadOnlyAccess",
)
if err != nil {
msg := fmt.Sprintf("failed to assume role in account: %s", accountId)
return handleError(c, apierror.New(apierror.ErrForbidden, msg, err))
}
rdsClient := rdsapi.NewSession(session.Session, s.defaultConfig)
orch := &rdsOrchestrator{
client: rdsClient,
}
var resp *DatabaseResponse
if (req.Cluster != nil && req.Cluster.SnapshotIdentifier != nil) || (req.Instance != nil && req.Instance.SnapshotIdentifier != nil) {
// restoring database from snapshot
if resp, err = orch.databaseRestore(c, &req); err != nil {
return handleError(c, err)
}
} else {
// creating database from scratch
if resp, err = orch.databaseCreate(c, &req); err != nil {
return handleError(c, err)
}
}
return c.Render(200, r.JSON(resp))
}
// DatabasesPut modifies a database in a given account
func (s *server) DatabasesPut(c buffalo.Context) error {
input := DatabaseModifyInput{}
if err := c.Bind(&input); err != nil {
log.Println(err)
return c.Error(400, err)
}
if input.Cluster == nil && input.Instance == nil && input.Tags == nil {
return c.Error(400, errors.New("Bad request: missing Cluster, Instance, Tags in request"))
}
if input.Cluster != nil && input.Instance != nil {
return c.Error(400, errors.New("Bad request: cannot specify both Cluster and Instance"))
}
accountId := s.mapAccountNumber(c.Param("account"))
role := fmt.Sprintf("arn:aws:iam::%s:role/%s", accountId, s.session.RoleName)
policy, err := generatePolicy("rds:DescribeDBClusters", "rds:ModifyDBCluster", "rds:DescribeDBInstances", "rds:ModifyDBInstance", "rds:AddTagsToResource")
if err != nil {
return handleError(c, err)
}
session, err := s.assumeRole(
c,
s.session.ExternalID,
role,
policy,
"arn:aws:iam::aws:policy/AmazonRDSReadOnlyAccess",
)
if err != nil {
msg := fmt.Sprintf("failed to assume role in account: %s", accountId)
return handleError(c, apierror.New(apierror.ErrForbidden, msg, err))
}
rdsClient := rdsapi.NewSession(session.Session, s.defaultConfig)
orch := &rdsOrchestrator{
client: rdsClient,
}
resp, err := orch.databaseModify(c, c.Param("db"), &input)
if err != nil {
return handleError(c, err)
}
return c.Render(200, r.JSON(resp))
}
// DatabasesPutState stops or starts a database in a given account
func (s *server) DatabasesPutState(c buffalo.Context) error {
input := DatabaseStateInput{}
if err := c.Bind(&input); err != nil {
log.Println(err)
return c.Error(400, err)
}
accountId := s.mapAccountNumber(c.Param("account"))
role := fmt.Sprintf("arn:aws:iam::%s:role/%s", accountId, s.session.RoleName)
policy, err := generatePolicy("rds:StartDBCluster", "rds:StartDBInstance", "rds:StopDBCluster", "rds:StopDBInstance")
if err != nil {
return handleError(c, err)
}
session, err := s.assumeRole(
c,
s.session.ExternalID,
role,
policy,
"arn:aws:iam::aws:policy/AmazonRDSReadOnlyAccess",
)
if err != nil {
msg := fmt.Sprintf("failed to assume role in account: %s", accountId)
return handleError(c, apierror.New(apierror.ErrForbidden, msg, err))
}
rdsClient := rdsapi.NewSession(session.Session, s.defaultConfig)
id := c.Param("db")
if id == "" {
return c.Error(400, errors.New("Bad request: missing database identifier"))
}
switch input.State {
case "start":
if err := rdsClient.StartDatabase(c, id); err != nil {
return c.Error(400, err)
}
case "stop":
if err := rdsClient.StopDatabase(c, id); err != nil {
return c.Error(400, err)
}
default:
return c.Error(400, errors.New("Invalid state. Valid states are 'stop' or 'start'."))
}
return c.Render(200, r.JSON("OK"))
}
// DatabasesDelete deletes a database in a given account
func (s *server) DatabasesDelete(c buffalo.Context) error {
snapshot := false
if b, err := strconv.ParseBool(c.Param("snapshot")); err == nil {
snapshot = b
}
accountId := s.mapAccountNumber(c.Param("account"))
role := fmt.Sprintf("arn:aws:iam::%s:role/%s", accountId, s.session.RoleName)
policy, err := generatePolicy("rds:DescribeDBInstances", "rds:DeleteDBInstance", "rds:DeleteDBCluster")
if err != nil {
return handleError(c, err)
}
session, err := s.assumeRole(
c,
s.session.ExternalID,
role,
policy,
"arn:aws:iam::aws:policy/AmazonRDSReadOnlyAccess",
)
if err != nil {
msg := fmt.Sprintf("failed to assume role in account: %s", accountId)
return handleError(c, apierror.New(apierror.ErrForbidden, msg, err))
}
rdsClient := rdsapi.NewSession(session.Session, s.defaultConfig)
orch := &rdsOrchestrator{
client: rdsClient,
}
resp, err := orch.databaseDelete(c, c.Param("db"), snapshot)
if err != nil {
return handleError(c, err)
}
return c.Render(200, r.JSON(resp))
}