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multi.go
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multi.go
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package instance
import (
"github.com/go-kit/kit/log"
"github.com/go-kit/kit/metrics"
"github.com/pkg/errors"
"github.com/weaveworks/flux"
"github.com/weaveworks/flux/git"
"github.com/weaveworks/flux/history"
"github.com/weaveworks/flux/platform"
"github.com/weaveworks/flux/registry"
"time"
)
type MultitenantInstancer struct {
DB DB
Connecter platform.Connecter
Logger log.Logger
Histogram metrics.Histogram
History history.DB
RegistryMetrics registry.Metrics
MemcacheClient registry.MemcacheClient
RegistryCacheExpiry time.Duration
}
func (m *MultitenantInstancer) Get(instanceID flux.InstanceID) (*Instance, error) {
c, err := m.DB.GetConfig(instanceID)
if err != nil {
return nil, errors.Wrap(err, "getting instance config from DB")
}
// Platform interface for this instance
platform, err := m.Connecter.Connect(instanceID)
if err != nil {
return nil, errors.Wrap(err, "connecting to platform")
}
// Logger specialised to this instance
instanceLogger := log.NewContext(m.Logger).With("instanceID", instanceID)
// Registry client with instance's config
creds, err := registry.CredentialsFromConfig(c.Settings)
if err != nil {
return nil, errors.Wrap(err, "decoding registry credentials")
}
registryLogger := log.NewContext(instanceLogger).With("component", "registry")
reg := registry.NewRegistry(
registry.NewRemoteClientFactory(creds, registryLogger, m.MemcacheClient, m.RegistryCacheExpiry),
registryLogger,
m.RegistryMetrics,
)
reg = registry.NewInstrumentedRegistry(reg, m.RegistryMetrics)
repo := gitRepoFromSettings(c.Settings)
// Events for this instance
eventRW := EventReadWriter{instanceID, m.History}
// Configuration for this instance
config := configurer{instanceID, m.DB}
return New(
platform,
reg,
config,
repo,
instanceLogger,
m.Histogram,
eventRW,
eventRW,
), nil
}
func gitRepoFromSettings(settings flux.UnsafeInstanceConfig) git.Repo {
branch := settings.Git.Branch
if branch == "" {
branch = "master"
}
return git.Repo{
URL: settings.Git.URL,
Branch: branch,
Key: settings.Git.Key,
Path: settings.Git.Path,
}
}