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Add support for CopyObject across regions and multiple Minio IPs

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This PR adds CopyObject support for objects residing in buckets
in different Minio instances (where Minio instances are part of
a federated setup).

Also, added support for multiple Minio domain IPs. This is required
for distributed deployments, where one deployment may have multiple
nodes, each with a different public IP.
This commit is contained in:
Nitish Tiwari
2018-05-12 00:32:30 +05:30
committed by kannappanr
parent f30c95a301
commit 6ce7265c8c
12 changed files with 208 additions and 82 deletions
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23
cmd/generic-handlers.go
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@@ -26,9 +26,12 @@ import (
"strings"
"time"
"github.com/minio/minio-go/pkg/set"
"github.com/coreos/etcd/client"
humanize "github.com/dustin/go-humanize"
"github.com/minio/minio/cmd/logger"
"github.com/minio/minio/pkg/dns"
"github.com/minio/minio/pkg/handlers"
"github.com/minio/minio/pkg/sys"
"github.com/rs/cors"
@@ -629,29 +632,37 @@ func (f bucketForwardingHandler) ServeHTTP(w http.ResponseWriter, r *http.Reques
return
}
bucket, object := urlPath2BucketObjectName(r.URL.Path)
// MakeBucket request
// MakeBucket requests should be handled at current endpoint
if r.Method == http.MethodPut && bucket != "" && object == "" {
f.handler.ServeHTTP(w, r)
return
}
// ListBucket request
// ListBucket requests should be handled at current endpoint as
// all buckets data can be fetched from here.
if r.Method == http.MethodGet && bucket == "" && object == "" {
f.handler.ServeHTTP(w, r)
return
}
// CopyObject requests should be handled at current endpoint as path style
// requests have target bucket and object in URI and source details are in
// header fields
if r.Method == http.MethodPut && r.Header.Get("X-Amz-Copy-Source") != "" {
f.handler.ServeHTTP(w, r)
return
}
sr, err := globalDNSConfig.Get(bucket)
if err != nil {
if client.IsKeyNotFound(err) {
if client.IsKeyNotFound(err) || err == dns.ErrNoEntriesFound {
writeErrorResponse(w, ErrNoSuchBucket, r.URL)
} else {
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
}
return
}
if sr.Host != globalDomainIP {
backendURL := fmt.Sprintf("http://%s:%d", sr.Host, sr.Port)
if globalDomainIPs.Intersection(set.CreateStringSet(getHostsSlice(sr)...)).IsEmpty() {
backendURL := fmt.Sprintf("http://%s:%d", sr[0].Host, sr[0].Port)
if globalIsSSL {
backendURL = fmt.Sprintf("https://%s:%d", sr.Host, sr.Port)
backendURL = fmt.Sprintf("https://%s:%d", sr[0].Host, sr[0].Port)
}
r.URL, err = url.Parse(backendURL)
if err != nil {