forked from ThienLK1/fabric-v2.2
-
Notifications
You must be signed in to change notification settings - Fork 1
/
platforms.go
194 lines (160 loc) · 6.27 KB
/
platforms.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
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
/*
Copyright IBM Corp. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package platforms
import (
"archive/tar"
"bytes"
"compress/gzip"
"fmt"
"io"
"strings"
docker "github.com/fsouza/go-dockerclient"
"github.com/hyperledger/fabric/common/flogging"
"github.com/hyperledger/fabric/common/metadata"
"github.com/hyperledger/fabric/core/chaincode/platforms/golang"
"github.com/hyperledger/fabric/core/chaincode/platforms/java"
"github.com/hyperledger/fabric/core/chaincode/platforms/node"
"github.com/hyperledger/fabric/core/chaincode/platforms/util"
"github.com/pkg/errors"
)
// SupportedPlatforms is the canonical list of platforms Fabric supports
var SupportedPlatforms = []Platform{
&java.Platform{},
&golang.Platform{},
&node.Platform{},
}
// Interface for validating the specification and writing the package for
// the given platform
type Platform interface {
Name() string
GenerateDockerfile() (string, error)
DockerBuildOptions(path string) (util.DockerBuildOptions, error)
}
type PackageWriter interface {
Write(name string, payload []byte, tw *tar.Writer) error
}
type PackageWriterWrapper func(name string, payload []byte, tw *tar.Writer) error
func (pw PackageWriterWrapper) Write(name string, payload []byte, tw *tar.Writer) error {
return pw(name, payload, tw)
}
type Registry struct {
Platforms map[string]Platform
PackageWriter PackageWriter
}
var logger = flogging.MustGetLogger("chaincode.platform")
func NewRegistry(platformTypes ...Platform) *Registry {
platforms := make(map[string]Platform)
for _, platform := range platformTypes {
if _, ok := platforms[platform.Name()]; ok {
logger.Panicf("Multiple platforms of the same name specified: %s", platform.Name())
}
platforms[platform.Name()] = platform
}
return &Registry{
Platforms: platforms,
PackageWriter: PackageWriterWrapper(writeBytesToPackage),
}
}
func (r *Registry) GenerateDockerfile(ccType string) (string, error) {
platform, ok := r.Platforms[ccType]
if !ok {
return "", fmt.Errorf("Unknown chaincodeType: %s", ccType)
}
var buf []string
// ----------------------------------------------------------------------------------------------------
// Let the platform define the base Dockerfile
// ----------------------------------------------------------------------------------------------------
base, err := platform.GenerateDockerfile()
if err != nil {
return "", fmt.Errorf("Failed to generate platform-specific Dockerfile: %s", err)
}
buf = append(buf, base)
buf = append(buf, fmt.Sprintf(`LABEL %s.chaincode.type="%s" \`, metadata.BaseDockerLabel, ccType))
buf = append(buf, fmt.Sprintf(` %s.version="%s"`, metadata.BaseDockerLabel, metadata.Version))
// ----------------------------------------------------------------------------------------------------
// Then augment it with any general options
// ----------------------------------------------------------------------------------------------------
//append version so chaincode build version can be compared against peer build version
buf = append(buf, fmt.Sprintf("ENV CORE_CHAINCODE_BUILDLEVEL=%s", metadata.Version))
// ----------------------------------------------------------------------------------------------------
// Finalize it
// ----------------------------------------------------------------------------------------------------
contents := strings.Join(buf, "\n")
logger.Debugf("\n%s", contents)
return contents, nil
}
func (r *Registry) StreamDockerBuild(ccType, path string, codePackage io.Reader, inputFiles map[string][]byte, tw *tar.Writer, client *docker.Client) error {
var err error
// ----------------------------------------------------------------------------------------------------
// Determine our platform driver from the spec
// ----------------------------------------------------------------------------------------------------
platform, ok := r.Platforms[ccType]
if !ok {
return fmt.Errorf("could not find platform of type: %s", ccType)
}
// ----------------------------------------------------------------------------------------------------
// First stream out our static inputFiles
// ----------------------------------------------------------------------------------------------------
for name, data := range inputFiles {
err = r.PackageWriter.Write(name, data, tw)
if err != nil {
return fmt.Errorf(`Failed to inject "%s": %s`, name, err)
}
}
buildOptions, err := platform.DockerBuildOptions(path)
if err != nil {
return errors.Wrap(err, "platform failed to create docker build options")
}
output := &bytes.Buffer{}
buildOptions.InputStream = codePackage
buildOptions.OutputStream = output
err = util.DockerBuild(buildOptions, client)
if err != nil {
return errors.Wrap(err, "docker build failed")
}
return writeBytesToPackage("binpackage.tar", output.Bytes(), tw)
}
func writeBytesToPackage(name string, payload []byte, tw *tar.Writer) error {
err := tw.WriteHeader(&tar.Header{
Name: name,
Size: int64(len(payload)),
Mode: 0100644,
})
if err != nil {
return err
}
_, err = tw.Write(payload)
if err != nil {
return err
}
return nil
}
func (r *Registry) GenerateDockerBuild(ccType, path string, codePackage io.Reader, client *docker.Client) (io.Reader, error) {
inputFiles := make(map[string][]byte)
// ----------------------------------------------------------------------------------------------------
// Generate the Dockerfile specific to our context
// ----------------------------------------------------------------------------------------------------
dockerFile, err := r.GenerateDockerfile(ccType)
if err != nil {
return nil, fmt.Errorf("Failed to generate a Dockerfile: %s", err)
}
inputFiles["Dockerfile"] = []byte(dockerFile)
// ----------------------------------------------------------------------------------------------------
// Finally, launch an asynchronous process to stream all of the above into a docker build context
// ----------------------------------------------------------------------------------------------------
input, output := io.Pipe()
go func() {
gw := gzip.NewWriter(output)
tw := tar.NewWriter(gw)
err := r.StreamDockerBuild(ccType, path, codePackage, inputFiles, tw, client)
if err != nil {
logger.Error(err)
}
tw.Close()
gw.Close()
output.CloseWithError(err)
}()
return input, nil
}