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example_objectstorage_test.go
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example_objectstorage_test.go
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// Copyright (c) 2016, 2018, 2024, Oracle and/or its affiliates. All rights reserved.
// This software is dual-licensed to you under the Universal Permissive License (UPL) 1.0 as shown at https://oss.oracle.com/licenses/upl or Apache License 2.0 as shown at http://www.apache.org/licenses/LICENSE-2.0. You may choose either license.
// Example code for Object Storage Service API
package example
import (
"context"
"fmt"
"io"
"log"
"net/http"
"os"
"path/filepath"
"github.com/oracle/oci-go-sdk/v65/common"
"github.com/oracle/oci-go-sdk/v65/example/helpers"
"github.com/oracle/oci-go-sdk/v65/objectstorage"
"github.com/oracle/oci-go-sdk/v65/objectstorage/transfer"
)
// ExampleObjectStorage_UploadFile shows how to create a bucket and upload a file
func ExampleObjectStorage_UploadFile() {
c, clerr := objectstorage.NewObjectStorageClientWithConfigurationProvider(common.DefaultConfigProvider())
helpers.FatalIfError(clerr)
ctx := context.Background()
bname := helpers.GetRandomString(8)
namespace := getNamespace(ctx, c)
createBucket(ctx, c, namespace, bname)
defer deleteBucket(ctx, c, namespace, bname)
contentlen := 1024 * 1000
fpath, filesize := helpers.WriteTempFileOfSize(int64(contentlen))
filename := filepath.Base(fpath)
defer func() {
os.Remove(filename)
}()
file, e := os.Open(fpath)
if e != nil {
file.Close()
helpers.FatalIfError(e)
} else {
defer file.Close()
}
e = putObject(ctx, c, namespace, bname, filename, filesize, file, nil)
helpers.FatalIfError(e)
defer deleteObject(ctx, c, namespace, bname, filename)
// Output:
// get namespace
// create bucket
// put object
// delete object
// delete bucket
}
func ExampleObjectStorage_UploadManager_UploadFile() {
c, clerr := objectstorage.NewObjectStorageClientWithConfigurationProvider(common.DefaultConfigProvider())
helpers.FatalIfError(clerr)
// Disable timeout to support big file upload(Once need to specify the os client for Upload Manager)
c.HTTPClient = &http.Client{}
ctx := context.Background()
bname := "bname"
namespace := getNamespace(ctx, c)
createBucket(ctx, c, namespace, bname)
defer deleteBucket(ctx, c, namespace, bname)
contentlen := 1024 * 1024 * 300 // 300MB
fpath, _ := helpers.WriteTempFileOfSize(int64(contentlen))
filename := filepath.Base(fpath)
defer os.Remove(filename)
uploadManager := transfer.NewUploadManager()
objectName := "sampleFileUploadObj"
req := transfer.UploadFileRequest{
UploadRequest: transfer.UploadRequest{
NamespaceName: common.String(namespace),
BucketName: common.String(bname),
ObjectName: common.String(objectName),
PartSize: common.Int64(128 * 1024 * 1024),
CallBack: callBack,
ObjectStorageClient: &c,
EnableMultipartChecksumVerification: common.Bool(true),
},
FilePath: fpath,
}
// if you want to overwrite default value, you can do it
// as: transfer.UploadRequest.AllowMultipartUploads = common.Bool(false) // default is true
// or: transfer.UploadRequest.AllowParrallelUploads = common.Bool(false) // default is true
resp, err := uploadManager.UploadFile(ctx, req)
if err != nil && resp.IsResumable() {
resp, err = uploadManager.ResumeUploadFile(ctx, *resp.MultipartUploadResponse.UploadID)
if err != nil {
fmt.Println(resp)
}
}
defer deleteObject(ctx, c, namespace, bname, objectName)
fmt.Println("file uploaded")
// Output:
// get namespace
// create bucket
// One example of progress bar could be the above comment content.
// One example of progress bar could be the above comment content.
// One example of progress bar could be the above comment content.
// file uploaded
// delete object
// delete bucket
}
func callBack(multiPartUploadPart transfer.MultiPartUploadPart) {
if nil == multiPartUploadPart.Err {
// Please refer this as the progress bar print content.
// fmt.Printf("Part: %d / %d is uploaded.\n", multiPartUploadPart.PartNum, multiPartUploadPart.TotalParts)
fmt.Printf("One example of progress bar could be the above comment content.\n")
// Please refer following fmt to get each part opc-md5 res.
// fmt.Printf("and this part opcMD5(64BasedEncoding) is: %s.\n", *multiPartUploadPart.OpcMD5 )
}
}
func ExampleObjectStorage_UploadManager_Stream() {
c, clerr := objectstorage.NewObjectStorageClientWithConfigurationProvider(common.DefaultConfigProvider())
helpers.FatalIfError(clerr)
ctx := context.Background()
bname := "bname"
namespace := getNamespace(ctx, c)
createBucket(ctx, c, namespace, bname)
defer deleteBucket(ctx, c, namespace, bname)
contentlen := 1024 * 1000 * 130 // 130MB
fpath, _ := helpers.WriteTempFileOfSize(int64(contentlen))
filename := filepath.Base(fpath)
defer func() {
os.Remove(filename)
}()
uploadManager := transfer.NewUploadManager()
objectName := "sampleStreamUploadObj"
file, _ := os.Open(fpath)
defer file.Close()
req := transfer.UploadStreamRequest{
UploadRequest: transfer.UploadRequest{
NamespaceName: common.String(namespace),
BucketName: common.String(bname),
ObjectName: common.String(objectName),
EnableMultipartChecksumVerification: common.Bool(true),
},
StreamReader: file, // any struct implements the io.Reader interface
}
// if you want to overwrite default value, you can do it
// as: transfer.UploadRequest.AllowMultipartUploads = common.Bool(false) // default is true
// or: transfer.UploadRequest.AllowParallelUploads = common.Bool(false) // default is true
_, err := uploadManager.UploadStream(context.Background(), req)
if err != nil {
fmt.Println(err)
}
defer deleteObject(ctx, c, namespace, bname, objectName)
fmt.Println("stream uploaded")
// Output:
// get namespace
// create bucket
// stream uploaded
// delete object
// delete bucket
}
// Example for getting Object Storage namespace of a tenancy that is not their own. This
// is useful in cross-tenant Object Storage operations. Object Storage namespace can be retrieved using the
// compartment id of the target tenancy if the user has necessary permissions to access that tenancy.
//
// For example if Tenant A wants to access Tenant B's object storage namespace then Tenant A has to define
// a policy similar to following:
//
// DEFINE TENANCY TenantB AS <TenantB OCID>
// ENDORSE GROUP <TenantA user group name> TO {OBJECTSTORAGE_NAMESPACE_READ} IN TENANCY TenantB
//
// and Tenant B should add a policy similar to following:
//
// DEFINE TENANCY TenantA AS <TenantA OCID>
// DEFINE GROUP TenantAGroup AS <TenantA user group OCID>
// ADMIT GROUP TenantAGroup OF TENANCY TenantA TO {OBJECTSTORAGE_NAMESPACE_READ} IN TENANCY
//
// This example covers only GetNamespace operation across tenants. Additional permissions
// will be required to perform more Object Storage operations.
//
// ExampleObjectStorage_GetNamespace shows how to get namespace providing compartmentId.
func ExampleObjectStorage_GetNamespace() {
c, clerr := objectstorage.NewObjectStorageClientWithConfigurationProvider(common.DefaultConfigProvider())
helpers.FatalIfError(clerr)
ctx := context.Background()
request := objectstorage.GetNamespaceRequest{}
request.CompartmentId = helpers.CompartmentID()
r, err := c.GetNamespace(ctx, request)
helpers.FatalIfError(err)
log.Printf("Namespace for compartment %s is: %s", *request.CompartmentId, *r.Value)
fmt.Println("Namespace retrieved")
// Output:
// Namespace retrieved
}
func ExampleObjectStorage_GetObjectUsingRealmSpecificEndpoint() {
// This example shows how to use realm specific endpoint to get object.
// You can select either this environment variable or the customClientConfiguration to enable realm specific endpoint.
os.Setenv("OCI_REALM_SPECIFIC_SERVICE_ENDPOINT_TEMPLATE_ENABLED", "true")
c, clerr := objectstorage.NewObjectStorageClientWithConfigurationProvider(common.DefaultConfigProvider())
helpers.FatalIfError(clerr)
// An alternative way to enable realm specific endpoint is to use the following code.
c.SetCustomClientConfiguration(common.CustomClientConfiguration{
RealmSpecificServiceEndpointTemplateEnabled: common.Bool(true),
})
ctx := context.Background()
bname := helpers.GetRandomString(8)
namespace := getNamespace(ctx, c)
getRequest := objectstorage.GetObjectRequest{
NamespaceName: common.String(namespace),
BucketName: common.String(bname),
ObjectName: common.String("ExampleObjectStorage_GetObjectUsingRealmSpecificEndpoint"),
}
response, err := c.GetObject(context.Background(), getRequest)
if err != nil {
fmt.Println("404")
return
}
fmt.Println(response)
// Output:
// 404
}
func getNamespace(ctx context.Context, c objectstorage.ObjectStorageClient) string {
request := objectstorage.GetNamespaceRequest{}
r, err := c.GetNamespace(ctx, request)
helpers.FatalIfError(err)
fmt.Println("get namespace")
return *r.Value
}
func putObject(ctx context.Context, c objectstorage.ObjectStorageClient, namespace, bucketname, objectname string, contentLen int64, content io.ReadCloser, metadata map[string]string) error {
request := objectstorage.PutObjectRequest{
NamespaceName: &namespace,
BucketName: &bucketname,
ObjectName: &objectname,
ContentLength: &contentLen,
PutObjectBody: content,
OpcMeta: metadata,
}
_, err := c.PutObject(ctx, request)
fmt.Println("put object")
return err
}
func deleteObject(ctx context.Context, c objectstorage.ObjectStorageClient, namespace, bucketname, objectname string) (err error) {
request := objectstorage.DeleteObjectRequest{
NamespaceName: &namespace,
BucketName: &bucketname,
ObjectName: &objectname,
}
_, err = c.DeleteObject(ctx, request)
helpers.FatalIfError(err)
fmt.Println("delete object")
return
}
func createBucket(ctx context.Context, c objectstorage.ObjectStorageClient, namespace, name string) {
request := objectstorage.CreateBucketRequest{
NamespaceName: &namespace,
}
request.CompartmentId = helpers.CompartmentID()
request.Name = &name
request.Metadata = make(map[string]string)
request.PublicAccessType = objectstorage.CreateBucketDetailsPublicAccessTypeNopublicaccess
_, err := c.CreateBucket(ctx, request)
helpers.FatalIfError(err)
fmt.Println("create bucket")
}
func deleteBucket(ctx context.Context, c objectstorage.ObjectStorageClient, namespace, name string) (err error) {
request := objectstorage.DeleteBucketRequest{
NamespaceName: &namespace,
BucketName: &name,
}
_, err = c.DeleteBucket(ctx, request)
helpers.FatalIfError(err)
fmt.Println("delete bucket")
return
}