/
validate_env.go
457 lines (424 loc) · 13.1 KB
/
validate_env.go
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// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
package manifest
import (
"errors"
"fmt"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/arn"
"github.com/aws/copilot-cli/internal/pkg/aws/cloudfront"
)
var (
errAZsNotEqual = errors.New("public subnets and private subnets do not span the same availability zones")
minAZs = 2
)
// Validate returns nil if Environment is configured correctly.
func (e Environment) Validate() error {
if err := e.EnvironmentConfig.validate(); err != nil {
return err
}
return nil
}
// validate returns nil if EnvironmentConfig is configured correctly.
func (e EnvironmentConfig) validate() error {
if err := e.Network.validate(); err != nil {
return fmt.Errorf(`validate "network": %w`, err)
}
if err := e.Observability.validate(); err != nil {
return fmt.Errorf(`validate "observability": %w`, err)
}
if err := e.HTTPConfig.validate(); err != nil {
return fmt.Errorf(`validate "http config": %w`, err)
}
if err := e.Network.VPC.SecurityGroupConfig.validate(); err != nil {
return fmt.Errorf(`validate "security_group": %w`, err)
}
if err := e.CDNConfig.validate(); err != nil {
return fmt.Errorf(`validate "cdn": %w`, err)
}
if e.IsPublicLBIngressRestrictedToCDN() && !e.CDNEnabled() {
return errors.New("CDN must be enabled to limit security group ingress to CloudFront")
}
if e.CDNEnabled() {
cdnCert := e.CDNConfig.Config.Certificate
if e.HTTPConfig.Public.Certificates == nil {
if cdnCert != nil && !aws.BoolValue(e.CDNConfig.Config.TerminateTLS) {
return errors.New(`"cdn.terminate_tls" must be true if "cdn.certificate" is set without "http.public.certificates"`)
}
} else {
if cdnCert == nil {
return &errFieldMustBeSpecified{
missingField: "cdn.certificate",
conditionalFields: []string{"http.public.certificates", "cdn"},
allMustBeSpecified: true,
}
}
}
}
if e.HTTPConfig.Private.InternalALBSubnets != nil {
if !e.Network.VPC.imported() {
return errors.New("in order to specify internal ALB subnet placement, subnets must be imported")
}
if err := e.validateInternalALBSubnets(); err != nil {
return err
}
}
return nil
}
// validate returns nil if environmentNetworkConfig is configured correctly.
func (n environmentNetworkConfig) validate() error {
if err := n.VPC.validate(); err != nil {
return fmt.Errorf(`validate "vpc": %w`, err)
}
return nil
}
// validate returns nil if environmentVPCConfig is configured correctly.
func (cfg environmentVPCConfig) validate() error {
if cfg.imported() && cfg.managedVPCCustomized() {
return errors.New(`cannot import VPC resources (with "id" fields) and customize VPC resources (with "cidr" and "az" fields) at the same time`)
}
if err := cfg.Subnets.validate(); err != nil {
return fmt.Errorf(`validate "subnets": %w`, err)
}
if cfg.imported() {
if err := cfg.validateImportedVPC(); err != nil {
return fmt.Errorf(`validate "subnets" for an imported VPC: %w`, err)
}
}
if cfg.managedVPCCustomized() {
if err := cfg.validateManagedVPC(); err != nil {
return fmt.Errorf(`validate "subnets" for an adjusted VPC: %w`, err)
}
}
if err := cfg.FlowLogs.validate(); err != nil {
return fmt.Errorf(`validate vpc "flowlogs": %w`, err)
}
return nil
}
// validate returns nil if securityGroupRule has all the required parameters set.
func (cfg securityGroupRule) validate() error {
if cfg.CidrIP == "" {
return &errFieldMustBeSpecified{
missingField: "cidr",
}
}
if cfg.IpProtocol == "" {
return &errFieldMustBeSpecified{
missingField: "ip_protocol",
}
}
return cfg.Ports.validate()
}
// validate if ports are set.
func (cfg portsConfig) validate() error {
if cfg.IsEmpty() {
return &errFieldMustBeSpecified{
missingField: "ports",
}
}
if cfg.Range == nil {
return nil
}
if err := cfg.Range.validate(); err != nil {
var targetErr *errInvalidRange
if errors.As(err, &targetErr) {
return &errInvalidRange{
value: aws.StringValue((*string)(cfg.Range)),
validFormat: "${from_port}-${to_port}",
}
}
return err
}
return nil
}
// validate returns nil if securityGroupConfig is configured correctly.
func (cfg securityGroupConfig) validate() error {
for idx, ingress := range cfg.Ingress {
if err := ingress.validate(); err != nil {
return fmt.Errorf(`validate ingress[%d]: %w`, idx, err)
}
}
for idx, egress := range cfg.Egress {
if err := egress.validate(); err != nil {
return fmt.Errorf(`validate egress[%d]: %w`, idx, err)
}
}
return nil
}
func (cfg environmentVPCConfig) validateImportedVPC() error {
for idx, subnet := range cfg.Subnets.Public {
if aws.StringValue(subnet.SubnetID) == "" {
return fmt.Errorf(`validate public[%d]: %w`, idx, &errFieldMustBeSpecified{
missingField: "id",
})
}
}
for idx, subnet := range cfg.Subnets.Private {
if aws.StringValue(subnet.SubnetID) == "" {
return fmt.Errorf(`validate private[%d]: %w`, idx, &errFieldMustBeSpecified{
missingField: "id",
})
}
}
switch {
case len(cfg.Subnets.Private)+len(cfg.Subnets.Public) <= 0:
return errors.New(`VPC must have subnets in order to proceed with environment creation`)
case len(cfg.Subnets.Public) == 1:
return errors.New(`validate "public": at least two public subnets must be imported to enable Load Balancing`)
case len(cfg.Subnets.Private) == 1:
return errors.New(`validate "private": at least two private subnets must be imported`)
}
return nil
}
func (cfg environmentVPCConfig) validateManagedVPC() error {
var (
publicAZs = make(map[string]struct{})
privateAZs = make(map[string]struct{})
publicCIDRs = make(map[string]struct{})
privateCIDRs = make(map[string]struct{})
)
var exists = struct{}{}
for idx, subnet := range cfg.Subnets.Public {
if aws.StringValue((*string)(subnet.CIDR)) == "" {
return fmt.Errorf(`validate public[%d]: %w`, idx, &errFieldMustBeSpecified{
missingField: "cidr",
})
}
publicCIDRs[aws.StringValue((*string)(subnet.CIDR))] = exists
if aws.StringValue(subnet.AZ) != "" {
publicAZs[aws.StringValue(subnet.AZ)] = exists
}
}
for idx, subnet := range cfg.Subnets.Private {
if aws.StringValue((*string)(subnet.CIDR)) == "" {
return fmt.Errorf(`validate private[%d]: %w`, idx, &errFieldMustBeSpecified{
missingField: "cidr",
})
}
privateCIDRs[aws.StringValue((*string)(subnet.CIDR))] = exists
if aws.StringValue(subnet.AZ) != "" {
privateAZs[aws.StringValue(subnet.AZ)] = exists
}
}
// NOTE: the following are constraints on az:
// 1. #az = 0, or #az = #public_subnets = #private_subnets.
// 2. set(az_for_public) = set(az_for_private).
// 3, If configured at all, the number of AZ must be >= 2.
if !areSetsEqual(publicAZs, privateAZs) {
return errAZsNotEqual
}
numAZs := len(publicAZs)
if numAZs == 0 {
return nil
}
if numAZs < minAZs {
return fmt.Errorf(`require at least %d availability zones`, minAZs)
}
if len(publicCIDRs) != numAZs {
return fmt.Errorf(`validate "public": number of public subnet CIDRs (%d) does not match number of AZs (%d)`, len(publicCIDRs), len(publicAZs))
}
if len(privateCIDRs) != numAZs {
return fmt.Errorf(`validate "private": number of private subnet CIDRs (%d) does not match number of AZs (%d)`, len(privateCIDRs), len(publicAZs))
}
return nil
}
// validate returns nil if subnetsConfiguration is configured correctly.
func (cs subnetsConfiguration) validate() error {
for idx, subnet := range cs.Public {
if err := subnet.validate(); err != nil {
return fmt.Errorf(`validate "public[%d]": %w`, idx, err)
}
}
for idx, subnet := range cs.Private {
if err := subnet.validate(); err != nil {
return fmt.Errorf(`validate "private[%d]": %w`, idx, err)
}
}
return nil
}
// validate returns nil if subnetConfiguration is configured correctly.
func (c subnetConfiguration) validate() error {
if c.SubnetID != nil && c.CIDR != nil {
return &errFieldMutualExclusive{
firstField: "id",
secondField: "cidr",
mustExist: false,
}
}
if c.SubnetID != nil && c.AZ != nil {
return &errFieldMutualExclusive{
firstField: "id",
secondField: "az",
mustExist: false,
}
}
return nil
}
// validate is a no-op for VPCFlowLogsArgs.
func (fl VPCFlowLogsArgs) validate() error {
return nil
}
// validate returns nil if environmentObservability is configured correctly.
func (o environmentObservability) validate() error {
return nil
}
// validate returns nil if EnvironmentHTTPConfig is configured correctly.
func (cfg EnvironmentHTTPConfig) validate() error {
if err := cfg.Public.validate(); err != nil {
return fmt.Errorf(`validate "public": %w`, err)
}
if err := cfg.Private.validate(); err != nil {
return fmt.Errorf(`validate "private": %w`, err)
}
return nil
}
// validate returns nil if PublicHTTPConfig is configured correctly.
func (cfg PublicHTTPConfig) validate() error {
if !cfg.DeprecatedSG.DeprecatedIngress.IsEmpty() && !cfg.Ingress.IsEmpty() {
return &errSpecifiedBothIngressFields{
firstField: "public.http.security_groups.ingress",
secondField: "public.http.ingress",
}
}
for idx, certARN := range cfg.Certificates {
if _, err := arn.Parse(certARN); err != nil {
return fmt.Errorf(`parse "certificates[%d]": %w`, idx, err)
}
}
if cfg.DeprecatedSG.DeprecatedIngress.VPCIngress != nil {
return fmt.Errorf("a public load balancer already allows vpc ingress")
}
if err := cfg.ELBAccessLogs.validate(); err != nil {
return fmt.Errorf(`validate "access_logs": %w`, err)
}
if err := cfg.DeprecatedSG.validate(); err != nil {
return err
}
return cfg.Ingress.validate()
}
// validate returns nil if ELBAccessLogsArgsOrBool is configured correctly.
func (al ELBAccessLogsArgsOrBool) validate() error {
if al.isEmpty() {
return nil
}
return al.AdvancedConfig.validate()
}
// validate is a no-op for ELBAccessLogsArgs.
func (al ELBAccessLogsArgs) validate() error {
return nil
}
// validate returns nil if ALBSecurityGroupsConfig is configured correctly.
func (cfg DeprecatedALBSecurityGroupsConfig) validate() error {
return cfg.DeprecatedIngress.validate()
}
// validate returns nil if privateHTTPConfig is configured correctly.
func (cfg privateHTTPConfig) validate() error {
if !cfg.DeprecatedSG.DeprecatedIngress.IsEmpty() && !cfg.Ingress.IsEmpty() {
return &errSpecifiedBothIngressFields{
firstField: "private.http.security_groups.ingress",
secondField: "private.http.ingress",
}
}
for idx, certARN := range cfg.Certificates {
if _, err := arn.Parse(certARN); err != nil {
return fmt.Errorf(`parse "certificates[%d]": %w`, idx, err)
}
}
if !cfg.DeprecatedSG.DeprecatedIngress.RestrictiveIngress.IsEmpty() {
return fmt.Errorf("an internal load balancer cannot have restrictive ingress fields")
}
if err := cfg.DeprecatedSG.validate(); err != nil {
return fmt.Errorf(`validate "security_groups: %w`, err)
}
return cfg.Ingress.validate()
}
// validate returns nil if environmentCDNConfig is configured correctly.
func (cfg EnvironmentCDNConfig) validate() error {
if cfg.Config.isEmpty() {
return nil
}
return cfg.Config.validate()
}
// validate returns nil if Ingress is configured correctly.
func (i DeprecatedIngress) validate() error {
if i.IsEmpty() {
return nil
}
return i.RestrictiveIngress.validate()
}
// validate returns nil if RestrictiveIngress is configured correctly.
func (i RestrictiveIngress) validate() error {
for _, sourceIP := range i.SourceIPs {
if err := sourceIP.validate(); err != nil {
return err
}
}
return nil
}
// validate is a no-op for RelaxedIngress.
func (i RelaxedIngress) validate() error {
return nil
}
// validate returns nil if advancedCDNConfig is configured correctly.
func (cfg AdvancedCDNConfig) validate() error {
if cfg.Certificate != nil {
certARN, err := arn.Parse(*cfg.Certificate)
if err != nil {
return fmt.Errorf(`parse cdn certificate: %w`, err)
}
if certARN.Region != cloudfront.CertRegion {
return &errInvalidCloudFrontRegion{}
}
}
if err := cfg.Static.validate(); err != nil {
return fmt.Errorf(`validate "static_assets": %w`, err)
}
return nil
}
// validate returns nil if CDNStaticConfig is configured correctly.
func (cfg CDNStaticConfig) validate() error {
if cfg.IsEmpty() {
return nil
}
if cfg.Alias == "" {
return &errFieldMustBeSpecified{
missingField: "alias",
}
}
if cfg.Location == "" {
return &errFieldMustBeSpecified{
missingField: "location",
}
}
if cfg.Path == "" {
return &errFieldMustBeSpecified{
missingField: "path",
}
}
return nil
}
func (c EnvironmentConfig) validateInternalALBSubnets() error {
isImported := make(map[string]bool)
for _, placementSubnet := range c.HTTPConfig.Private.InternalALBSubnets {
for _, subnet := range append(c.Network.VPC.Subnets.Private, c.Network.VPC.Subnets.Public...) {
if placementSubnet == aws.StringValue(subnet.SubnetID) {
isImported[placementSubnet] = true
}
}
}
if len(isImported) != len(c.HTTPConfig.Private.InternalALBSubnets) {
return fmt.Errorf("subnet(s) specified for internal ALB placement not imported")
}
return nil
}
func areSetsEqual[T comparable](a map[T]struct{}, b map[T]struct{}) bool {
if len(a) != len(b) {
return false
}
for k := range a {
if _, ok := b[k]; !ok {
return false
}
}
return true
}