config_cloud.go

package evergreen

import (
	"context"

	"github.com/mongodb/anser/bsonutil"
	"github.com/mongodb/grip"
	"github.com/pkg/errors"
	"go.mongodb.org/mongo-driver/bson"
)

var (
	cloudProvidersAWSKey    = bsonutil.MustHaveTag(CloudProviders{}, "AWS")
	cloudProvidersDockerKey = bsonutil.MustHaveTag(CloudProviders{}, "Docker")
)

// CloudProviders stores configuration settings for the supported cloud host providers.
type CloudProviders struct {
	AWS    AWSConfig    `bson:"aws" json:"aws" yaml:"aws"`
	Docker DockerConfig `bson:"docker" json:"docker" yaml:"docker"`
}

func (c *CloudProviders) SectionId() string { return "providers" }

func (c *CloudProviders) Get(ctx context.Context) error {
	return getConfigSection(ctx, c)
}

func (c *CloudProviders) Set(ctx context.Context) error {
	return errors.Wrapf(setConfigSection(ctx, c.SectionId(), bson.M{
		"$set": bson.M{
			cloudProvidersAWSKey:    c.AWS,
			cloudProvidersDockerKey: c.Docker,
		}}), "updating config section '%s'", c.SectionId(),
	)
}

func (c *CloudProviders) ValidateAndDefault() error {
	catcher := grip.NewBasicCatcher()
	catcher.Wrap(c.AWS.Pod.Validate(), "invalid ECS config")
	return catcher.Resolve()
}

// EC2Key links a region with a corresponding key and secret
type EC2Key struct {
	Name   string `bson:"name" json:"name" yaml:"name"`
	Region string `bson:"region" json:"region" yaml:"region"` // this can be removed after EVG-8284 is merged
	Key    string `bson:"key" json:"key" yaml:"key"`
	Secret string `bson:"secret" json:"secret" yaml:"secret"`
}

type Subnet struct {
	AZ       string `bson:"az" json:"az" yaml:"az"`
	SubnetID string `bson:"subnet_id" json:"subnet_id" yaml:"subnet_id"`
}

// AWSConfig stores auth info for Amazon Web Services.
type AWSConfig struct {
	// EC2Keys stored as a list to allow for possible multiple accounts in the future.
	EC2Keys []EC2Key `bson:"ec2_keys" json:"ec2_keys" yaml:"ec2_keys"`
	Subnets []Subnet `bson:"subnets" json:"subnets" yaml:"subnets"`

	// TaskSync stores credentials for storing task data in S3.
	TaskSync S3Credentials `bson:"task_sync" json:"task_sync" yaml:"task_sync"`
	// TaskSyncRead stores credentials for reading task data in S3.
	TaskSyncRead S3Credentials `bson:"task_sync_read" json:"task_sync_read" yaml:"task_sync_read"`

	// ParserProject is configuration for storing and accessing parser projects
	// in S3.
	ParserProject ParserProjectS3Config `bson:"parser_project" json:"parser_project" yaml:"parser_project"`

	// PersistentDNS is AWS configuration for maintaining persistent DNS names for hosts.
	PersistentDNS PersistentDNSConfig `bson:"persistent_dns" json:"persistent_dns" yaml:"persistent_dns"`

	DefaultSecurityGroup string `bson:"default_security_group" json:"default_security_group" yaml:"default_security_group"`

	AllowedRegions []string `bson:"allowed_regions" json:"allowed_regions" yaml:"allowed_regions"`
	// EC2 instance types for spawn hosts
	AllowedInstanceTypes []string `bson:"allowed_instance_types" json:"allowed_instance_types" yaml:"allowed_instance_types"`
	MaxVolumeSizePerUser int      `bson:"max_volume_size" json:"max_volume_size" yaml:"max_volume_size"`

	// Pod represents configuration for using pods in AWS.
	Pod AWSPodConfig `bson:"pod" json:"pod" yaml:"pod"`
}

type S3Credentials struct {
	Key    string `bson:"key" json:"key" yaml:"key"`
	Secret string `bson:"secret" json:"secret" yaml:"secret"`
	Bucket string `bson:"bucket" json:"bucket" yaml:"bucket"`
}

func (c *S3Credentials) Validate() error {
	catcher := grip.NewBasicCatcher()
	catcher.NewWhen(c.Key == "", "key must not be empty")
	catcher.NewWhen(c.Secret == "", "secret must not be empty")
	catcher.NewWhen(c.Bucket == "", "bucket must not be empty")
	return catcher.Resolve()
}

// ParserProjectS3Config is the configuration options for storing and accessing
// parser projects in S3.
type ParserProjectS3Config struct {
	S3Credentials `bson:",inline" yaml:",inline"`
	Prefix        string `bson:"prefix" json:"prefix" yaml:"prefix"`
	// GeneratedJSONPrefix is the prefix to use for storing intermediate
	// JSON configuration for generate.tasks, which will update the parser
	// project.
	GeneratedJSONPrefix string `bson:"generated_json_prefix" json:"generated_json_prefix" yaml:"generated_json_prefix"`
}

func (c *ParserProjectS3Config) Validate() error { return nil }

// PersistentDNSConfig is the configuration options to support persistent DNS
// names for hosts.
type PersistentDNSConfig struct {
	// HostedZoneID is the ID of the hosted zone in Route 53 where DNS names are
	// managed.
	HostedZoneID string `bson:"hosted_zone_id" json:"hosted_zone_id" yaml:"hosted_zone_id"`
	// Domain is the domain name of persistent DNS names.
	Domain string `bson:"domain" json:"domain" yaml:"domain"`
}

// AWSPodConfig represents configuration for using pods backed by AWS.
type AWSPodConfig struct {
	// Role is the role to assume to make API calls that manage pods.
	Role string `bson:"role" json:"role" yaml:"role"`
	// Region is the region where the pods are managed.
	Region string `bson:"region" json:"region" yaml:"region"`
	// ECS represents configuration for using AWS ECS to manage pods.
	ECS ECSConfig `bson:"ecs" json:"ecs" yaml:"ecs"`
	// SecretsManager represents configuration for using AWS Secrets Manager
	// with AWS ECS for pods.
	SecretsManager SecretsManagerConfig `bson:"secrets_manager" json:"secrets_manager" yaml:"secrets_manager"`
}

// Validate checks that the ECS configuration is valid.
func (c *AWSPodConfig) Validate() error {
	return c.ECS.Validate()
}

// ECSConfig represents configuration for AWS ECS.
type ECSConfig struct {
	// MaxCPU is the maximum allowed CPU units (1024 CPU units = 1 vCPU) that a
	// single pod can use.
	MaxCPU int `bson:"max_cpu" json:"max_cpu" yaml:"max_cpu"`
	// MaxMemoryMB is the maximum allowed memory (in MB) that a single pod can
	// use.
	MaxMemoryMB int `bson:"max_memory_mb" json:"max_memory_mb" yaml:"max_memory_mb"`
	// TaskDefinitionPrefix is the prefix for the task definition families.
	TaskDefinitionPrefix string `bson:"task_definition_prefix" json:"task_definition_prefix" yaml:"task_definition_prefix"`
	// TaskRole is the IAM role that ECS tasks can assume to make AWS requests.
	TaskRole string `bson:"task_role" json:"task_role" yaml:"task_role"`
	// ExecutionRole is the IAM role that ECS container instances can assume to
	// make AWS requests.
	ExecutionRole string `bson:"execution_role" json:"execution_role" yaml:"execution_role"`
	// LogRegion is the region used by the task definition's log configuration.
	LogRegion string `bson:"log_region" json:"log_region" yaml:"log_region"`
	// LogGroup is the log group name used by the task definition's log configuration.
	LogGroup string `bson:"log_group" json:"log_group" yaml:"log_group"`
	// LogStreamPrefix is the prefix used to determine log group stream names.
	LogStreamPrefix string `bson:"log_stream_prefix" json:"log_stream_prefix" yaml:"log_stream_prefix"`
	// AWSVPC specifies configuration when ECS tasks use AWSVPC networking.
	AWSVPC AWSVPCConfig `bson:"awsvpc" json:"awsvpc" yaml:"awsvpc"`
	// Clusters specify the configuration of each particular ECS cluster.
	Clusters []ECSClusterConfig `bson:"clusters" json:"clusters" yaml:"clusters"`
	// CapacityProviders specify the available capacity provider configurations.
	CapacityProviders []ECSCapacityProvider `bson:"capacity_providers" json:"capacity_providers" yaml:"capacity_providers"`
	// ClientType represents the type of Secrets Manager client implementation
	// that will be used. This is not a value that can or should be configured
	// for production, but is useful to explicitly set for testing purposes.
	ClientType AWSClientType `bson:"client_type" json:"client_type" yaml:"client_type"`
	// AllowedImages specifies images that are allowed to be used.
	AllowedImages []string `bson:"allowed_images" json:"allowed_images" yaml:"allowed_images"`
}

// AWSVPCConfig represents configuration when using AWSVPC networking in ECS.
type AWSVPCConfig struct {
	Subnets        []string `bson:"subnets" json:"subnets" yaml:"subnets"`
	SecurityGroups []string `bson:"security_groups" json:"security_groups" yaml:"security_groups"`
}

// Validate checks that the required ECS configuration options are given.
func (c *ECSConfig) Validate() error {
	catcher := grip.NewBasicCatcher()
	for _, clusterConf := range c.Clusters {
		catcher.Add(clusterConf.Validate())
	}
	for i, cp := range c.CapacityProviders {
		catcher.Wrapf(cp.Validate(), "invalid capacity provider at index %d", i)
	}

	return catcher.Resolve()
}

// ECSClusterConfig represents configuration specific to a particular ECS
// cluster.
type ECSClusterConfig struct {
	// Name is the ECS cluster name.
	Name string `bson:"name" json:"name" yaml:"name"`
	// OS is the OS of the container instances supported by the cluster.
	OS ECSOS `bson:"os" json:"os" yaml:"os"`
}

// ECSOS represents an OS that can run containers in ECS.
type ECSOS string

const (
	ECSOSLinux   = "linux"
	ECSOSWindows = "windows"
)

// Validate checks that the OS is a valid one for running containers.
func (p ECSOS) Validate() error {
	switch p {
	case ECSOSLinux, ECSOSWindows:
		return nil
	default:
		return errors.Errorf("unrecognized ECS OS '%s'", p)
	}
}

// ECSArch represents a CPU architecture that can run containers in ECS.
type ECSArch string

const (
	ECSArchAMD64 = "amd64"
	ECSArchARM64 = "arm64"
)

// Validate checks that the CPU architecture is a valid one for running
// containers.
func (a ECSArch) Validate() error {
	switch a {
	case ECSArchAMD64, ECSArchARM64:
		return nil
	default:
		return errors.Errorf("unrecognized ECS capacity provider arch '%s'", a)
	}
}

// ECSWindowsVersion represents a particular Windows OS version that can run
// containers in ECS.
type ECSWindowsVersion string

const (
	ECSWindowsServer2016 = "windows_server_2016"
	ECSWindowsServer2019 = "windows_server_2019"
	ECSWindowsServer2022 = "windows_server_2022"
)

// Validate checks that the Windows OS version is a valid one for running
// containers.
func (v ECSWindowsVersion) Validate() error {
	switch v {
	case ECSWindowsServer2016, ECSWindowsServer2019, ECSWindowsServer2022:
		return nil
	default:
		return errors.Errorf("unrecognized ECS Windows version '%s'", v)
	}
}

// ECSCapacityProvider represents a capacity provider in ECS.
type ECSCapacityProvider struct {
	// Name is the capacity provider name.
	Name string `bson:"name" json:"name" yaml:"name"`
	// OS is the kind of OS that the container instances in this capacity
	// provider can run.
	OS ECSOS `bson:"os" json:"os" yaml:"os"`
	// Arch is the type of CPU architecture that the container instances in this
	// capacity provider can run.
	Arch ECSArch `bson:"arch" json:"arch" yaml:"arch"`
	// WindowsVersion is the particular version of Windows that container
	// instances in this capacity provider run. This only applies if the OS is
	// Windows.
	WindowsVersion ECSWindowsVersion `bson:"windows_version" json:"windows_version" yaml:"windows_version"`
}

// Validate checks that the required settings are given for the capacity
// provider.
func (p *ECSCapacityProvider) Validate() error {
	catcher := grip.NewBasicCatcher()
	catcher.NewWhen(p.Name == "", "must provide a capacity provider name")
	catcher.Add(p.OS.Validate())
	catcher.Add(p.Arch.Validate())
	if p.OS == ECSOSWindows {
		if p.WindowsVersion == "" {
			catcher.New("must specify a particular Windows version when using Windows OS")
		} else {
			catcher.Add(p.WindowsVersion.Validate())
		}
	} else if p.OS != ECSOSWindows && p.WindowsVersion != "" {
		catcher.New("cannot specify a Windows version for a non-Windows OS")
	}
	return catcher.Resolve()
}

// Validate checks that the ECS cluster configuration has the required fields
// and all fields are valid values.
func (c *ECSClusterConfig) Validate() error {
	catcher := grip.NewBasicCatcher()
	catcher.NewWhen(c.Name == "", "must specify a cluster name")
	catcher.Wrap(c.OS.Validate(), "invalid OS")
	return catcher.Resolve()
}

// SecretsManagerConfig represents configuration for AWS Secrets Manager.
type SecretsManagerConfig struct {
	// SecretPrefix is the prefix for secret names.
	SecretPrefix string `bson:"secret_prefix" json:"secret_prefix" yaml:"secret_prefix"`
	// ClientType represents the type of Secrets Manager client implementation
	// that will be used. This is not a value that can or should be configured
	// for production, but is useful to explicitly set for testing purposes.
	ClientType AWSClientType `bson:"client_type" json:"client_type" yaml:"client_type"`
}

// AWSClientType represents the different types of AWS client implementations
// that can be used.
type AWSClientType string

const (

	// AWSClientTypeMock is the mock implementation of an AWS client for testing
	// purposes only. This should never be used in production.
	AWSClientTypeMock AWSClientType = "mock"
)

// DockerConfig stores auth info for Docker.
type DockerConfig struct {
	APIVersion string `bson:"api_version" json:"api_version" yaml:"api_version"`
}