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leftovers.go
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leftovers.go
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package gcp
import (
"context"
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"sync"
"github.com/genevieve/leftovers/gcp/common"
"github.com/genevieve/leftovers/gcp/compute"
"github.com/genevieve/leftovers/gcp/dns"
"golang.org/x/oauth2/google"
gcpcompute "google.golang.org/api/compute/v1"
gcpdns "google.golang.org/api/dns/v1"
)
type resource interface {
List(filter string) ([]common.Deletable, error)
}
type Leftovers struct {
logger logger
resources []resource
}
func (l Leftovers) List(filter string) {
deletables := []common.Deletable{}
l.logger.NoConfirm()
for _, r := range l.resources {
list, err := r.List(filter)
if err != nil {
l.logger.Println(err.Error())
}
deletables = append(deletables, list...)
}
for _, d := range deletables {
l.logger.Println(fmt.Sprintf("%s: %s", d.Type(), d.Name()))
}
}
func (l Leftovers) Delete(filter string) error {
deletables := [][]common.Deletable{}
for _, r := range l.resources {
list, err := r.List(filter)
if err != nil {
l.logger.Println(err.Error())
}
deletables = append(deletables, list)
}
var wg sync.WaitGroup
for _, list := range deletables {
for _, d := range list {
wg.Add(1)
go func(d common.Deletable) {
defer wg.Done()
l.logger.Println(fmt.Sprintf("Deleting %s: %s.", d.Type(), d.Name()))
if err := d.Delete(); err != nil {
l.logger.Println(err.Error())
} else {
l.logger.Println(fmt.Sprintf("SUCCESS deleting %s: %s!", d.Type(), d.Name()))
}
}(d)
}
wg.Wait()
}
return nil
}
func NewLeftovers(logger logger, keyPath string) (Leftovers, error) {
if keyPath == "" {
return Leftovers{}, errors.New("Missing service account key path.")
}
key, err := ioutil.ReadFile(keyPath)
if err != nil {
key = []byte(keyPath)
}
p := struct {
ProjectId string `json:"project_id"`
}{}
if err := json.Unmarshal(key, &p); err != nil {
return Leftovers{}, fmt.Errorf("Unmarshalling account key for project id: %s", err)
}
config, err := google.JWTConfigFromJSON(key, gcpcompute.ComputeScope, gcpdns.NdevClouddnsReadwriteScope)
if err != nil {
return Leftovers{}, fmt.Errorf("Creating jwt config: %s", err)
}
service, err := gcpcompute.New(config.Client(context.Background()))
if err != nil {
return Leftovers{}, fmt.Errorf("Creating gcp client: %s", err)
}
client := compute.NewClient(p.ProjectId, service, logger)
regions, err := client.ListRegions()
if err != nil {
return Leftovers{}, fmt.Errorf("Listing regions: %s", err)
}
zones, err := client.ListZones()
if err != nil {
return Leftovers{}, fmt.Errorf("Listing zones: %s", err)
}
dnsService, err := gcpdns.New(config.Client(context.Background()))
if err != nil {
return Leftovers{}, fmt.Errorf("Creating gcp client: %s", err)
}
dnsClient := dns.NewClient(p.ProjectId, dnsService, logger)
return Leftovers{
logger: logger,
resources: []resource{
compute.NewForwardingRules(client, logger, regions),
compute.NewGlobalForwardingRules(client, logger),
compute.NewFirewalls(client, logger),
compute.NewTargetHttpProxies(client, logger),
compute.NewTargetHttpsProxies(client, logger),
compute.NewUrlMaps(client, logger),
compute.NewTargetPools(client, logger, regions),
compute.NewBackendServices(client, logger),
compute.NewInstanceTemplates(client, logger),
compute.NewInstanceGroupManagers(client, logger, zones),
compute.NewInstances(client, logger, zones),
compute.NewInstanceGroups(client, logger, zones),
compute.NewGlobalHealthChecks(client, logger),
compute.NewHttpHealthChecks(client, logger),
compute.NewHttpsHealthChecks(client, logger),
compute.NewImages(client, logger),
compute.NewDisks(client, logger, zones),
compute.NewSubnetworks(client, logger, regions),
compute.NewNetworks(client, logger),
compute.NewAddresses(client, logger, regions),
compute.NewGlobalAddresses(client, logger),
dns.NewManagedZones(dnsClient, dns.NewRecordSets(dnsClient), logger),
},
}, nil
}