Moving away from goamz to use minio-go instead. (#4193)

minio-go does fully managed way of handling S3 API requests

  - Automatic bucket location management across all s3 regions.
  - Transparently upload large files in multipart if file 64MB
    or larger.
  - Right GetObject() API provides compatibility with
    io.ReadWriteSeeker interface.
  - Various other APIs including bulk deletes, server side object
    copy, bucket policies and bucket notifications.

Fixes #4182

1 files changed, 95 insertions, 0 deletions

diff --git a/vendor/github.com/minio/minio-go/api-get-policy.go b/vendor/github.com/minio/minio-go/api-get-policy.go
new file mode 100644
index 000000000..07b1fa483
--- /dev/null
+++ b/vendor/github.com/minio/minio-go/api-get-policy.go
@@ -0,0 +1,95 @@
+/*
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 Minio, Inc.
+ *
+ * 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 minio
+
+import (
+	"encoding/json"
+	"io/ioutil"
+	"net/http"
+	"net/url"
+
+	"github.com/minio/minio-go/pkg/policy"
+)
+
+// GetBucketPolicy - get bucket policy at a given path.
+func (c Client) GetBucketPolicy(bucketName, objectPrefix string) (bucketPolicy policy.BucketPolicy, err error) {
+	// Input validation.
+	if err := isValidBucketName(bucketName); err != nil {
+		return policy.BucketPolicyNone, err
+	}
+	if err := isValidObjectPrefix(objectPrefix); err != nil {
+		return policy.BucketPolicyNone, err
+	}
+	policyInfo, err := c.getBucketPolicy(bucketName, objectPrefix)
+	if err != nil {
+		return policy.BucketPolicyNone, err
+	}
+	return policy.GetPolicy(policyInfo.Statements, bucketName, objectPrefix), nil
+}
+
+// GetBucketPolicy - get bucket policy rules at a given path.
+func (c Client) ListBucketPolicies(bucketName, objectPrefix string) (bucketPolicies map[string]policy.BucketPolicy, err error) {
+	// Input validation.
+	if err := isValidBucketName(bucketName); err != nil {
+		return map[string]policy.BucketPolicy{}, err
+	}
+	if err := isValidObjectPrefix(objectPrefix); err != nil {
+		return map[string]policy.BucketPolicy{}, err
+	}
+	policyInfo, err := c.getBucketPolicy(bucketName, objectPrefix)
+	if err != nil {
+		return map[string]policy.BucketPolicy{}, err
+	}
+	return policy.GetPolicies(policyInfo.Statements, bucketName), nil
+}
+
+// Request server for policy.
+func (c Client) getBucketPolicy(bucketName string, objectPrefix string) (policy.BucketAccessPolicy, error) {
+	// Get resources properly escaped and lined up before
+	// using them in http request.
+	urlValues := make(url.Values)
+	urlValues.Set("policy", "")
+
+	// Execute GET on bucket to list objects.
+	resp, err := c.executeMethod("GET", requestMetadata{
+		bucketName:  bucketName,
+		queryValues: urlValues,
+	})
+
+	defer closeResponse(resp)
+	if err != nil {
+		return policy.BucketAccessPolicy{}, err
+	}
+
+	if resp != nil {
+		if resp.StatusCode != http.StatusOK {
+			errResponse := httpRespToErrorResponse(resp, bucketName, "")
+			if ToErrorResponse(errResponse).Code == "NoSuchBucketPolicy" {
+				return policy.BucketAccessPolicy{Version: "2012-10-17"}, nil
+			}
+			return policy.BucketAccessPolicy{}, errResponse
+		}
+	}
+	bucketPolicyBuf, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return policy.BucketAccessPolicy{}, err
+	}
+
+	policy := policy.BucketAccessPolicy{}
+	err = json.Unmarshal(bucketPolicyBuf, &policy)
+	return policy, err
+}