/
remote_permission_checker.go
131 lines (121 loc) · 3.99 KB
/
remote_permission_checker.go
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package api
import (
"context"
"github.com/go-saas/kit/pkg/authz/authz"
v1 "github.com/go-saas/kit/user/api/permission/v1"
"github.com/go-saas/kit/user/util"
"github.com/samber/lo"
)
//PermissionChecker impl authz.PermissionChecker and authz.PermissionManagementService from calling remote service
type PermissionChecker struct {
srv v1.PermissionServiceServer
}
var _ authz.PermissionChecker = (*PermissionChecker)(nil)
var _ authz.PermissionManagementService = (*PermissionChecker)(nil)
func NewRemotePermissionChecker(srv v1.PermissionServiceServer) *PermissionChecker {
return &PermissionChecker{
srv: srv,
}
}
func (r *PermissionChecker) IsGrantTenant(ctx context.Context, requirements authz.RequirementList, tenantID string, subjects ...authz.Subject) ([]authz.Effect, error) {
var protoSubs = make([]string, len(subjects))
for i, subject := range subjects {
protoSubs[i] = subject.GetIdentity()
}
grantResp, err := r.srv.CheckForSubjects(ctx, &v1.CheckSubjectsPermissionRequest{
Requirements: lo.Map(requirements, func(t *authz.Requirement, _ int) *v1.PermissionRequirement {
return &v1.PermissionRequirement{
Namespace: t.Resource.GetNamespace(),
Resource: t.Resource.GetIdentity(),
Action: t.Action.GetIdentity(),
}
}),
Subjects: protoSubs,
TenantId: tenantID,
})
if err != nil {
return nil, err
}
effList := lo.Map(grantResp.EffectList, func(eff v1.Effect, _ int) authz.Effect {
switch eff {
case v1.Effect_GRANT:
return authz.EffectGrant
case v1.Effect_FORBIDDEN:
return authz.EffectForbidden
case v1.Effect_UNKNOWN:
return authz.EffectUnknown
}
return authz.EffectUnknown
})
return effList, nil
}
func (r *PermissionChecker) AddGrant(ctx context.Context, resource authz.Resource, action authz.Action, subject authz.Subject, tenantID string, effect authz.Effect) error {
_, err := r.srv.AddSubjectPermission(ctx, &v1.AddSubjectPermissionRequest{
Namespace: resource.GetNamespace(),
Resource: resource.GetIdentity(),
Action: action.GetIdentity(),
Subject: subject.GetIdentity(),
Effect: util.MapAuthEffect2PbEffect(effect),
TenantId: tenantID,
})
return err
}
func (r *PermissionChecker) ListAcl(ctx context.Context, subjects ...authz.Subject) ([]authz.PermissionBean, error) {
subs := make([]string, len(subjects))
for i, subject := range subjects {
subs[i] = subject.GetIdentity()
}
acl, err := r.srv.ListSubjectPermission(ctx, &v1.ListSubjectPermissionRequest{Subjects: subs})
if err != nil {
return nil, err
}
res := make([]authz.PermissionBean, len(acl.Acl))
for i, permission := range acl.Acl {
j := authz.PermissionBean{}
util.MapPbPermissionToBean(permission, &j)
res[i] = j
}
return res, nil
}
func (r *PermissionChecker) UpdateGrant(ctx context.Context, subject authz.Subject, acl []authz.UpdateSubjectPermission) error {
var pbAcl = lo.Map(acl, func(a authz.UpdateSubjectPermission, _ int) *v1.UpdateSubjectPermissionAcl {
return &v1.UpdateSubjectPermissionAcl{
Namespace: a.Resource.GetNamespace(),
Resource: a.Resource.GetIdentity(),
Action: a.Action.GetIdentity(),
Effect: util.MapAuthEffect2PbEffect(a.Effect),
TenantId: a.TenantID,
}
})
_, err := r.srv.UpdateSubjectPermission(ctx, &v1.UpdateSubjectPermissionRequest{
Subject: subject.GetIdentity(),
Acl: pbAcl,
})
return err
}
func (r *PermissionChecker) RemoveGrant(ctx context.Context, subject authz.Subject, filter ...authz.FilterFunc) error {
f := &authz.Filter{}
for _, filterFunc := range filter {
filterFunc(f)
}
var effs = lo.Map(f.Effects, func(e authz.Effect, _ int) v1.Effect {
return util.MapAuthEffect2PbEffect(e)
})
req := &v1.RemoveSubjectPermissionRequest{
Subject: subject.GetIdentity(),
Effects: effs,
TenantId: f.TenantID,
}
if f.Resource != nil {
n := f.Resource.GetNamespace()
req.Namespace = &n
i := f.Resource.GetIdentity()
req.Resource = &i
}
if f.Action != nil {
i := f.Action.GetIdentity()
req.Action = &i
}
_, err := r.srv.RemoveSubjectPermission(ctx, req)
return err
}