forked from remind101/empire
/
empire.go
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/
empire.go
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package empire // import "github.com/remind101/empire"
import (
"log"
"os"
"github.com/aws/aws-sdk-go/aws"
"github.com/fsouza/go-dockerclient"
"github.com/inconshreveable/log15"
"github.com/mattes/migrate/migrate"
"github.com/remind101/empire/pkg/dockerutil"
"github.com/remind101/empire/pkg/image"
"github.com/remind101/empire/pkg/runner"
"github.com/remind101/empire/pkg/service"
"github.com/remind101/empire/pkg/sslcert"
"github.com/remind101/pkg/reporter"
"golang.org/x/net/context"
)
var (
// DefaultOptions is a default Options instance that can be passed when
// intializing a new Empire.
DefaultOptions = Options{}
// DefaultReporter is the default reporter.Reporter to use.
DefaultReporter = reporter.NewLogReporter()
)
const (
// WebPort is the default PORT to set on web processes.
WebPort = 8080
// WebProcessType is the process type we assume are web server processes.
WebProcessType = "web"
)
// DockerOptions is a set of options to configure a docker api client.
type DockerOptions struct {
// The unix socket to connect to the docker api.
Socket string
// Path to a certificate to use for TLS connections.
CertPath string
// A set of docker registry credentials.
Auth *docker.AuthConfigurations
}
// ECSOptions is a set of options to configure ECS.
type ECSOptions struct {
Cluster string
ServiceRole string
}
// ELBOptions is a set of options to configure ELB.
type ELBOptions struct {
// The Security Group ID to assign when creating internal load balancers.
InternalSecurityGroupID string
// The Security Group ID to assign when creating external load balancers.
ExternalSecurityGroupID string
// The Subnet IDs to assign when creating internal load balancers.
InternalSubnetIDs []string
// The Subnet IDs to assign when creating external load balancers.
ExternalSubnetIDs []string
// Zone ID of the internal zone to add cnames for each elb
InternalZoneID string
}
// Options is provided to New to configure the Empire services.
type Options struct {
Docker DockerOptions
ECS ECSOptions
ELB ELBOptions
// AWS Configuration
AWSConfig *aws.Config
Secret string
// Database connection string.
DB string
}
// Empire is a context object that contains a collection of services.
type Empire struct {
// Reporter is an reporter.Reporter that will be used to report errors to
// an external system.
reporter.Reporter
// Logger is a log15 logger that will be used for logging.
Logger log15.Logger
store *store
accessTokens *accessTokensService
apps *appsService
certs *certificatesService
configs *configsService
domains *domainsService
jobStates *processStatesService
releases *releasesService
deployer *deployer
scaler *scaler
restarter *restarter
runner *runnerService
}
// New returns a new Empire instance.
func New(options Options) (*Empire, error) {
db, err := newDB(options.DB)
if err != nil {
return nil, err
}
store := &store{db: db}
extractor, err := newExtractor(options.Docker)
if err != nil {
return nil, err
}
resolver, err := newResolver(options.Docker)
if err != nil {
return nil, err
}
runner, err := newRunner(options.Docker)
if err != nil {
return nil, err
}
manager, err := newManager(
runner,
options.ECS,
options.ELB,
options.AWSConfig,
)
if err != nil {
return nil, err
}
accessTokens := &accessTokensService{
Secret: []byte(options.Secret),
}
apps := &appsService{
store: store,
manager: manager,
}
jobStates := &processStatesService{
manager: manager,
}
scaler := &scaler{
store: store,
manager: manager,
}
releaser := &releaser{
store: store,
manager: manager,
}
restarter := &restarter{
releaser: releaser,
manager: manager,
}
releases := &releasesService{
store: store,
releaser: releaser,
}
configs := &configsService{
store: store,
releases: releases,
}
domains := &domainsService{
store: store,
}
slugs := &slugsService{
store: store,
extractor: extractor,
resolver: resolver,
}
deployer := &deployer{
appsService: apps,
configsService: configs,
slugsService: slugs,
releasesService: releases,
}
certs := &certificatesService{
store: store,
manager: newCertManager(options.AWSConfig),
releaser: releaser,
}
return &Empire{
Logger: newLogger(),
store: store,
accessTokens: accessTokens,
apps: apps,
certs: certs,
configs: configs,
deployer: deployer,
domains: domains,
jobStates: jobStates,
scaler: scaler,
restarter: restarter,
runner: &runnerService{
store: store,
manager: manager,
},
releases: releases,
}, nil
}
// AccessTokensFind finds an access token.
func (e *Empire) AccessTokensFind(token string) (*AccessToken, error) {
return e.accessTokens.AccessTokensFind(token)
}
// AccessTokensCreate creates a new AccessToken.
func (e *Empire) AccessTokensCreate(accessToken *AccessToken) (*AccessToken, error) {
return e.accessTokens.AccessTokensCreate(accessToken)
}
// AppsFirst finds the first app matching the query.
func (e *Empire) AppsFirst(q AppsQuery) (*App, error) {
return e.store.AppsFirst(q)
}
// Apps returns all Apps.
func (e *Empire) Apps(q AppsQuery) ([]*App, error) {
return e.store.Apps(q)
}
// AppsCreate creates a new app.
func (e *Empire) AppsCreate(app *App) (*App, error) {
return e.store.AppsCreate(app)
}
// AppsDestroy destroys the app.
func (e *Empire) AppsDestroy(ctx context.Context, app *App) error {
return e.apps.AppsDestroy(ctx, app)
}
// CertificatesFirst returns a certificate for the given ID
func (e *Empire) CertificatesFirst(ctx context.Context, q CertificatesQuery) (*Certificate, error) {
return e.store.CertificatesFirst(q)
}
// CertificatesCreate creates a certificate.
func (e *Empire) CertificatesCreate(ctx context.Context, cert *Certificate) (*Certificate, error) {
return e.certs.CertificatesCreate(ctx, cert)
}
// CertificatesUpdate updates a certificate.
func (e *Empire) CertificatesUpdate(ctx context.Context, cert *Certificate) (*Certificate, error) {
return e.certs.CertificatesUpdate(ctx, cert)
}
// CertificatesDestroy destroys a certificate.
func (e *Empire) CertificatesDestroy(ctx context.Context, cert *Certificate) error {
return e.certs.CertificatesDestroy(ctx, cert)
}
// ConfigsCurrent returns the current Config for a given app.
func (e *Empire) ConfigsCurrent(app *App) (*Config, error) {
return e.configs.ConfigsCurrent(app)
}
// ConfigsApply applies the new config vars to the apps current Config,
// returning a new Config. If the app has a running release, a new release will
// be created and run.
func (e *Empire) ConfigsApply(ctx context.Context, app *App, vars Vars) (*Config, error) {
return e.configs.ConfigsApply(ctx, app, vars)
}
// DomainsFirst returns the first domain matching the query.
func (e *Empire) DomainsFirst(q DomainsQuery) (*Domain, error) {
return e.store.DomainsFirst(q)
}
// Domains returns all domains matching the query.
func (e *Empire) Domains(q DomainsQuery) ([]*Domain, error) {
return e.store.Domains(q)
}
// DomainsCreate adds a new Domain for an App.
func (e *Empire) DomainsCreate(domain *Domain) (*Domain, error) {
return e.domains.DomainsCreate(domain)
}
// DomainsDestroy removes a Domain for an App.
func (e *Empire) DomainsDestroy(domain *Domain) error {
return e.domains.DomainsDestroy(domain)
}
// JobStatesByApp returns the JobStates for the given app.
func (e *Empire) JobStatesByApp(ctx context.Context, app *App) ([]*ProcessState, error) {
return e.jobStates.JobStatesByApp(ctx, app)
}
// ProcessesRestart restarts processes matching the given prefix for the given Release.
// If the prefix is empty, it will match all processes for the release.
func (e *Empire) ProcessesRestart(ctx context.Context, app *App, id string) error {
return e.restarter.Restart(ctx, app, id)
}
// ProcessesRun runs a one-off process for a given App and command.
func (e *Empire) ProcessesRun(ctx context.Context, app *App, opts ProcessRunOpts) error {
return e.runner.Run(ctx, app, opts)
}
// ReleasesFindByApp returns all Releases for a given App.
func (e *Empire) ReleasesFindByApp(app *App) ([]*Release, error) {
return e.store.Releases(ReleasesQuery{App: app})
}
// ReleasesFindByAppAndVersion finds a specific Release for a given App.
func (e *Empire) ReleasesFindByAppAndVersion(app *App, version int) (*Release, error) {
return e.store.ReleasesFirst(ReleasesQuery{App: app, Version: &version})
}
// ReleasesLast returns the last release for an App.
func (e *Empire) ReleasesLast(app *App) (*Release, error) {
return e.store.ReleasesFirst(ReleasesQuery{App: app})
}
// ReleasesRollback rolls an app back to a specific release version. Returns a
// new release.
func (e *Empire) ReleasesRollback(ctx context.Context, app *App, version int) (*Release, error) {
return e.releases.ReleasesRollback(ctx, app, version)
}
// DeployImage deploys an image to Empire.
func (e *Empire) DeployImage(ctx context.Context, img image.Image, out chan Event) (*Release, error) {
return e.deployer.DeployImage(ctx, img, out)
}
// AppsScale scales an apps process.
func (e *Empire) AppsScale(ctx context.Context, app *App, t ProcessType, quantity int, c *Constraints) (*Process, error) {
return e.scaler.Scale(ctx, app, t, quantity, c)
}
// Reset resets empire.
func (e *Empire) Reset() error {
return e.store.Reset()
}
// IsHealthy returns true if Empire is healthy, which means it can connect to
// the services it depends on.
func (e *Empire) IsHealthy() bool {
return e.store.IsHealthy()
}
// Migrate runs the migrations.
func Migrate(db, path string) ([]error, bool) {
return migrate.UpSync(db, path)
}
// ValidationError is returned when a model is not valid.
type ValidationError struct {
Err error
}
func (e *ValidationError) Error() string {
return e.Err.Error()
}
// key used to store context values from within this package.
type key int
const (
UserKey key = 0
)
func newManager(r *runner.Runner, ecsOpts ECSOptions, elbOpts ELBOptions, config *aws.Config) (service.Manager, error) {
if config == nil {
log.Println("warn: AWS not configured, ECS service management disabled.")
return service.NewFakeManager(), nil
}
m, err := service.NewLoadBalancedECSManager(service.ECSConfig{
Cluster: ecsOpts.Cluster,
ServiceRole: ecsOpts.ServiceRole,
InternalSecurityGroupID: elbOpts.InternalSecurityGroupID,
ExternalSecurityGroupID: elbOpts.ExternalSecurityGroupID,
InternalSubnetIDs: elbOpts.InternalSubnetIDs,
ExternalSubnetIDs: elbOpts.ExternalSubnetIDs,
AWS: config,
ZoneID: elbOpts.InternalZoneID,
})
if err != nil {
return nil, err
}
return &service.AttachedRunner{
Manager: m,
Runner: r,
}, nil
}
func newCertManager(config *aws.Config) sslcert.Manager {
if config == nil {
log.Println("warn: AWS not configured, IAM server certificate management disabled.")
return sslcert.NewFakeManager()
}
return sslcert.NewIAMManager(config, "/empire/certs/")
}
func newRunner(o DockerOptions) (*runner.Runner, error) {
if o.Socket == "" {
return nil, nil
}
c, err := dockerutil.NewClient(o.Auth, o.Socket, o.CertPath)
if err != nil {
return nil, err
}
return runner.NewRunner(c), nil
}
func newLogger() log15.Logger {
l := log15.New()
h := log15.StreamHandler(os.Stdout, log15.LogfmtFormat())
//h = log15.CallerStackHandler("%+n", h)
l.SetHandler(log15.LazyHandler(h))
return l
}
func newExtractor(o DockerOptions) (Extractor, error) {
if o.Socket == "" {
log.Println("warn: docker socket not configured, docker command extractor disabled.")
return &fakeExtractor{}, nil
}
c, err := dockerutil.NewDockerClient(o.Socket, o.CertPath)
return newProcfileFallbackExtractor(c), err
}
func newResolver(o DockerOptions) (Resolver, error) {
if o.Socket == "" {
log.Println("warn: docker socket not configured, docker image puller disabled.")
return &fakeResolver{}, nil
}
c, err := dockerutil.NewClient(o.Auth, o.Socket, o.CertPath)
return newDockerResolver(c), err
}