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groups.go
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groups.go
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package google
import (
"encoding/json"
"fmt"
"log/syslog"
"strings"
"sync"
"sync/atomic"
admin "google.golang.org/api/admin/directory/v1"
"github.com/silinternational/personnel-sync/v6/internal"
"golang.org/x/net/context"
)
const (
RoleMember = "MEMBER"
RoleOwner = "OWNER"
RoleManager = "MANAGER"
)
type GoogleGroups struct {
DestinationConfig internal.DestinationConfig
GoogleConfig GoogleConfig
AdminService admin.Service
GroupSyncSet GroupSyncSet
BatchSize int
BatchDelaySeconds int
}
type GroupSyncSet struct {
GroupEmail string
Owners []string
ExtraOwners []string
Managers []string
ExtraManagers []string
ExtraMembers []string
DisableAdd bool
DisableUpdate bool
DisableDelete bool
}
func NewGoogleGroupsDestination(destinationConfig internal.DestinationConfig) (internal.Destination, error) {
var googleGroups GoogleGroups
// Unmarshal ExtraJSON into GoogleGroupsConfig struct
err := json.Unmarshal(destinationConfig.ExtraJSON, &googleGroups.GoogleConfig)
if err != nil {
return &GoogleGroups{}, err
}
// Defaults
if googleGroups.BatchSize <= 0 {
googleGroups.BatchSize = DefaultBatchSize
}
if googleGroups.BatchDelaySeconds <= 0 {
googleGroups.BatchDelaySeconds = DefaultBatchDelaySeconds
}
// Initialize AdminService object
googleGroups.AdminService, err = initGoogleAdminService(
googleGroups.GoogleConfig.GoogleAuth,
googleGroups.GoogleConfig.DelegatedAdminEmail,
admin.AdminDirectoryGroupScope,
admin.AdminDirectoryGroupMemberScope,
)
if err != nil {
return &GoogleGroups{}, err
}
return &googleGroups, nil
}
func (g *GoogleGroups) ForSet(syncSetJson json.RawMessage) error {
var syncSetConfig GroupSyncSet
err := json.Unmarshal(syncSetJson, &syncSetConfig)
if err != nil {
return err
}
if syncSetConfig.GroupEmail == "" {
return fmt.Errorf("GroupEmail missing from sync set json")
}
g.GroupSyncSet = syncSetConfig
return nil
}
func (g *GoogleGroups) ListUsers(desiredAttrs []string) ([]internal.Person, error) {
var membersList []*admin.Member
membersListCall := g.AdminService.Members.List(g.GroupSyncSet.GroupEmail)
err := membersListCall.Pages(context.TODO(), func(members *admin.Members) error {
membersList = append(membersList, members.Members...)
return nil
})
if err != nil {
return []internal.Person{}, fmt.Errorf("unable to get members of group %s: %s", g.GroupSyncSet.GroupEmail, err.Error())
}
var members []internal.Person
for _, nextMember := range membersList {
// Do not include Extra Managers or ExtraOwners in list to prevent inclusion in delete list
if isExtraManager, _ := internal.InArray(nextMember.Email, g.GroupSyncSet.ExtraManagers); isExtraManager {
continue
}
if isExtraOwner, _ := internal.InArray(nextMember.Email, g.GroupSyncSet.ExtraOwners); isExtraOwner {
continue
}
if isExtraMember, _ := internal.InArray(nextMember.Email, g.GroupSyncSet.ExtraMembers); isExtraMember {
continue
}
members = append(members, internal.Person{
CompareValue: nextMember.Email,
Attributes: map[string]string{
"Email": strings.ToLower(nextMember.Email),
},
})
}
return members, nil
}
func (g *GoogleGroups) ApplyChangeSet(
changes internal.ChangeSet,
eventLog chan<- internal.EventLogItem) internal.ChangeResults {
var results internal.ChangeResults
var wg sync.WaitGroup
// key = email, value = role
toBeCreated := map[string]string{}
for _, person := range changes.Create {
toBeCreated[person.CompareValue] = RoleMember
}
// Update Owner / Manager roles
for _, owner := range g.GroupSyncSet.Owners {
if _, ok := toBeCreated[owner]; ok {
toBeCreated[owner] = RoleOwner
}
}
for _, manager := range g.GroupSyncSet.Managers {
if _, ok := toBeCreated[manager]; ok {
toBeCreated[manager] = RoleManager
}
}
// Add any ExtraManagers, ExtraOwners, and ExtraMembers to Create list since they are not in the source people
for _, manager := range g.GroupSyncSet.ExtraManagers {
toBeCreated[manager] = RoleManager
}
for _, owner := range g.GroupSyncSet.ExtraOwners {
toBeCreated[owner] = RoleOwner
}
for _, member := range g.GroupSyncSet.ExtraMembers {
toBeCreated[member] = RoleMember
}
// One minute per batch
batchTimer := internal.NewBatchTimer(g.BatchSize, g.BatchDelaySeconds)
if !g.GroupSyncSet.DisableAdd {
for email, role := range toBeCreated {
wg.Add(1)
go g.addMember(email, role, &results.Created, &wg, eventLog)
batchTimer.WaitOnBatch()
}
}
if !g.GroupSyncSet.DisableDelete {
for _, dp := range changes.Delete {
// Do not delete ExtraManagers, ExtraOwners, or ExtraMembers
if isExtraManager, _ := internal.InArray(dp.CompareValue, g.GroupSyncSet.ExtraManagers); isExtraManager {
continue
}
if isExtraOwner, _ := internal.InArray(dp.CompareValue, g.GroupSyncSet.ExtraOwners); isExtraOwner {
continue
}
if isExtraMember, _ := internal.InArray(dp.CompareValue, g.GroupSyncSet.ExtraMembers); isExtraMember {
continue
}
wg.Add(1)
go g.removeMember(dp.CompareValue, &results.Deleted, &wg, eventLog)
batchTimer.WaitOnBatch()
}
}
wg.Wait()
return results
}
func (g *GoogleGroups) addMember(
email, role string,
counter *uint64,
wg *sync.WaitGroup,
eventLog chan<- internal.EventLogItem) {
defer wg.Done()
newMember := admin.Member{
Role: role,
Email: email,
}
_, err := g.AdminService.Members.Insert(g.GroupSyncSet.GroupEmail, &newMember).Do()
if err != nil && !strings.Contains(err.Error(), "409") { // error code 409 is for existing user
eventLog <- internal.EventLogItem{
Level: syslog.LOG_ERR,
Message: fmt.Sprintf("unable to insert %s in Google group %s: %s", email, g.GroupSyncSet.GroupEmail, err.Error()),
}
return
}
eventLog <- internal.EventLogItem{
Level: syslog.LOG_INFO,
Message: "AddMember " + email,
}
atomic.AddUint64(counter, 1)
}
func (g *GoogleGroups) removeMember(
email string,
counter *uint64,
wg *sync.WaitGroup,
eventLog chan<- internal.EventLogItem) {
defer wg.Done()
err := g.AdminService.Members.Delete(g.GroupSyncSet.GroupEmail, email).Do()
if err != nil {
eventLog <- internal.EventLogItem{
Level: syslog.LOG_ERR,
Message: fmt.Sprintf("unable to delete %s from Google group %s: %s", email, g.GroupSyncSet.GroupEmail, err.Error()),
}
return
}
eventLog <- internal.EventLogItem{
Level: syslog.LOG_INFO,
Message: "RemoveMember " + email,
}
atomic.AddUint64(counter, 1)
}