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repository.go
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repository.go
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package gatekeeper
import (
"database/sql"
"encoding/json"
"fmt"
"io/ioutil"
"log"
"sort"
"strings"
"github.com/juju/errors"
"gopkg.in/yaml.v2"
"k8s.io/apimachinery/pkg/apis/meta/v1"
clusterapi "github.com/moiot/gravity-operator/pkg/apis/cluster/v1alpha1"
clusterclient "github.com/moiot/gravity-operator/pkg/client/cluster/clientset/versioned/typed/cluster/v1alpha1"
)
const dbName = "gatekeeper"
const tableName = "version"
const defaultRuleGroup = "default"
var fullTableName = fmt.Sprintf("`%s`.`%s`", dbName, tableName)
var createTable = fmt.Sprintf("create table if not exists %s(`name` varchar(50) NOT NULL, `cases` varchar(255) NOT NULL DEFAULT '', `created_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP, PRIMARY KEY (`name`))ENGINE=InnoDB DEFAULT CHARSET=utf8;",
fullTableName)
type Repository struct {
operatorAddr string
clusterClient clusterclient.ClusterInterface
sourceDB *sql.DB
targetDB *sql.DB
cases []TestCaseConfig
versions map[string]*Version
}
func NewRepository(casePath string, operatorAddr string, sourceDB *sql.DB, targetDB *sql.DB, clusterClient clusterclient.ClusterInterface) *Repository {
_, err := sourceDB.Exec(fmt.Sprintf("create database if not exists `%s`", dbName))
if err != nil {
log.Panicf("error init db: %s", err)
}
_, err = sourceDB.Exec(createTable)
if err != nil {
log.Panicf("error init table: %s", err)
}
bytes, err := ioutil.ReadFile(casePath)
if err != nil {
log.Panic(err)
}
r := Repository{
operatorAddr: operatorAddr,
clusterClient: clusterClient,
sourceDB: sourceDB,
targetDB: targetDB,
versions: make(map[string]*Version),
}
err = yaml.UnmarshalStrict(bytes, &r.cases)
if err != nil {
log.Panic(err)
}
rows, err := sourceDB.Query(fmt.Sprintf("select name, cases from %s", fullTableName))
if err != nil {
log.Panic(err)
}
defer rows.Close()
for rows.Next() {
v := &Version{}
var cases string
if err = rows.Scan(&v.Name, &cases); err != nil {
log.Panic(err)
}
err = json.Unmarshal([]byte(cases), &v.RunningCases)
if err != nil {
log.Panic(err)
}
v.Reconcile(r.cases, r.operatorAddr, r.sourceDB, r.targetDB, false)
r.versions[v.Name] = v
}
if err = rows.Err(); err != nil {
log.Panic(err)
}
return &r
}
func (r *Repository) insert(v *Version) error {
c := r.getCluster()
defaultRule := getDefaultRule(c.Spec.DeploymentRules)
rule := clusterapi.DeploymentRule{
Group: v.Name,
Pipelines: []string{v.Name + "*"},
Image: removeImageTag(defaultRule.Image) + v.Name,
Command: defaultRule.Command,
}
c.Spec.DeploymentRules = append([]clusterapi.DeploymentRule{rule}, c.Spec.DeploymentRules...)
c, err := r.clusterClient.Update(c)
if err != nil {
return errors.Annotatef(err, "error add deployment rule %#v.", rule)
}
v.Reconcile(r.cases, r.operatorAddr, r.sourceDB, r.targetDB, true)
cases, _ := json.Marshal(v.RunningCases)
_, err = r.sourceDB.Exec(fmt.Sprintf("insert into %s(name, cases) values (?, ?)", fullTableName), v.Name, string(cases))
if err != nil {
v.Delete()
return errors.Trace(err)
}
r.versions[v.Name] = v
return nil
}
func removeImageTag(s string) string {
p := strings.LastIndex(s, ":")
return s[:p+1]
}
func getDefaultRule(rules []clusterapi.DeploymentRule) clusterapi.DeploymentRule {
for _, r := range rules {
if r.Group == defaultRuleGroup {
return r
}
}
log.Fatalf("can't find default deployment rule")
panic("impossible")
}
func (r *Repository) getCluster() *clusterapi.Cluster {
ret, err := r.clusterClient.List(v1.ListOptions{})
if err != nil {
log.Fatalf("[Repository.insert] error list cluster: %s", err)
}
if len(ret.Items) != 1 {
log.Fatalf("[Repository.insert] expect exactly one cluster object per namespace, actually %d", len(ret.Items))
}
return &ret.Items[0]
}
func (r *Repository) delete(name string) error {
_, err := r.sourceDB.Exec(fmt.Sprintf("delete from %s where name = ?", fullTableName), name)
if err != nil {
return errors.Trace(err)
}
r.versions[name].Delete()
delete(r.versions, name)
c := r.getCluster()
var rules []clusterapi.DeploymentRule
for _, r := range c.Spec.DeploymentRules {
if r.Group != name {
rules = append(rules, r)
}
}
c.Spec.DeploymentRules = rules
c, err = r.clusterClient.Update(c)
if err != nil {
return errors.Annotatef(err, "error remove deployment rule %s.", name)
}
return nil
}
func (r *Repository) get(name string) *Version {
return r.versions[name]
}
func (r *Repository) list() []*Version {
ret := make([]*Version, 0, len(r.versions))
for _, v := range r.versions {
ret = append(ret, v)
}
sort.Slice(ret, func(i, j int) bool {
return ret[i].Name < ret[j].Name
})
return ret
}