-
Notifications
You must be signed in to change notification settings - Fork 195
/
inputstream.go
135 lines (124 loc) · 4.98 KB
/
inputstream.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
// Copyright 2022 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package inputstream
import (
"context"
"fmt"
"net/http"
"os"
"time"
"github.com/GoogleCloudPlatform/k8s-config-connector/pkg/cli/asset"
"github.com/GoogleCloudPlatform/k8s-config-connector/pkg/cli/asset/export"
"github.com/GoogleCloudPlatform/k8s-config-connector/pkg/cli/cmd/bulkexport/parameters"
"github.com/GoogleCloudPlatform/k8s-config-connector/pkg/cli/log"
"github.com/GoogleCloudPlatform/k8s-config-connector/pkg/cli/serviceclient"
"github.com/GoogleCloudPlatform/k8s-config-connector/pkg/cli/storage"
)
var (
requestTimeout = 10 * time.Second
exportTimeout = 2 * time.Minute
)
func NewAssetStream(params *parameters.Parameters, stdin *os.File) (*asset.Stream, error) {
piped, err := parameters.IsInputPiped(stdin)
if err != nil {
return nil, fmt.Errorf("error checking if stdin has piped input: %w", err)
}
if piped {
return asset.NewStream(stdin), nil
}
if params.Input != "" {
return asset.NewStreamFromFile(params.Input)
}
return newStorageObjectStream(params)
}
func newStorageObjectStream(params *parameters.Parameters) (*asset.Stream, error) {
var err error
var bucketName, objectName string
httpClient, err := serviceclient.NewHTTPClient(context.TODO(), params.OAuth2Token)
if err != nil {
return nil, fmt.Errorf("error creating http client: %w", err)
}
if params.StorageKey == "" {
log.Verbose("Creating temporary bucket for export...")
ctx, cancel := newRequestContext()
defer cancel()
bucketName, objectName, err = export.NewTemporaryBucketAndObjectName(ctx, httpClient)
if err != nil {
return nil, fmt.Errorf("error creating temporary bucket and prefix: %w", err)
}
defer deleteTemporaryBucket(httpClient, bucketName)
} else {
bucketName, objectName, err = storage.GetBucketAndPrefix(params.StorageKey)
if err != nil {
return nil, fmt.Errorf("error extracting bucket and prefix from parameter '%v': %w", parameters.StorageKeyParam, err)
}
if objectName == "" {
objectName = export.NewObjectName()
} else {
return newStreamFromStorageObject(httpClient, bucketName, objectName)
}
}
parent, err := getParentName(params)
if err != nil {
return nil, err
}
exportCtx, cancel := context.WithTimeout(context.Background(), exportTimeout)
defer cancel()
log.Verbose("Creating asset inventory export at %v", storage.GetFullURI(bucketName, objectName))
if err := export.ForParentToStorageObject(exportCtx, httpClient, parent, bucketName, objectName); err != nil {
return nil, fmt.Errorf("error exporting asset inventory: %w", err)
}
defer deleteExport(httpClient, bucketName, objectName)
return newStreamFromStorageObject(httpClient, bucketName, objectName)
}
func newStreamFromStorageObject(httpClient *http.Client, bucketName, objectName string) (*asset.Stream, error) {
ctx, cancel := newRequestContext()
defer cancel()
return asset.NewStreamFromStorageObject(ctx, httpClient, bucketName, objectName)
}
func deleteTemporaryBucket(httpClient *http.Client, bucketName string) {
log.Verbose("Deleting temporary bucket '%v'...", bucketName)
ctx, cancel := newRequestContext()
defer cancel()
if err := export.DeleteTemporaryBucket(ctx, httpClient, bucketName); err != nil {
log.Verbose("Error deleting temporary bucket '%v': %v", bucketName, err)
}
}
func deleteExport(httpClient *http.Client, bucketName, objectName string) {
objectURI := storage.GetFullURI(bucketName, objectName)
log.Verbose("Deleting export at %v...", objectURI)
ctx, cancel := context.WithTimeout(context.Background(), requestTimeout)
defer cancel()
if err := export.DeleteExport(ctx, httpClient, bucketName, objectName); err != nil {
log.Verbose("Error deleting export at %v: %v", objectURI, err)
}
}
func getParentName(params *parameters.Parameters) (string, error) {
if params.ProjectID != "" {
return fmt.Sprintf("projects/%v", params.ProjectID), nil
}
if params.FolderID != 0 {
return fmt.Sprintf("folders/%v", params.FolderID), nil
}
if params.OrganizationID != 0 {
return fmt.Sprintf("organizations/%v", params.OrganizationID), nil
}
// technically the parameters validation methods guard against this case but we return a helpful error in case there
// is a bug in the validation
return "", fmt.Errorf("one of the '%v', '%v', or '%v' parameters must be defined when exporting",
parameters.ProjectIDParam, parameters.FolderIDParam, parameters.OrganizationIDParam)
}
func newRequestContext() (context.Context, func()) {
return context.WithTimeout(context.Background(), requestTimeout)
}