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Allow synchronous replication if enabled. (#11165)

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Synchronous replication can be enabled by setting the --sync
flag while adding a remote replication target.

This PR also adds proxying on GET/HEAD to another node in a
active-active replication setup in the event of a 404 on the current node.
This commit is contained in:
Poorna Krishnamoorthy
2021-01-11 22:36:51 -08:00
committed by GitHub
parent 317305d5f9
commit 7824e19d20
14 changed files with 347 additions and 100 deletions
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17
cmd/erasure-object.go
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@@ -18,6 +18,7 @@ package cmd
import (
"context"
"errors"
"fmt"
"io"
"net/http"
@@ -159,6 +160,14 @@ func (er erasureObjects) GetObjectNInfo(ctx context.Context, bucket, object stri
fi, metaArr, onlineDisks, err := er.getObjectFileInfo(ctx, bucket, object, opts, true)
if err != nil {
if isProxyable(ctx, bucket) && (errors.Is(err, errFileNotFound) || errors.Is(err, errFileVersionNotFound)) {
// proxy to replication target if active-active replication is in place.
reader, proxy := proxyGetToReplicationTarget(ctx, bucket, object, rs, h, opts)
if reader == nil || !proxy {
return nil, toObjectErr(err, bucket, object)
}
return reader, nil
}
return nil, toObjectErr(err, bucket, object)
}
@@ -413,7 +422,15 @@ func (er erasureObjects) getObjectFileInfo(ctx context.Context, bucket, object s
func (er erasureObjects) getObjectInfo(ctx context.Context, bucket, object string, opts ObjectOptions) (objInfo ObjectInfo, err error) {
fi, _, _, err := er.getObjectFileInfo(ctx, bucket, object, opts, false)
if err != nil {
// proxy HEAD to replication target if active-active replication configured on bucket
if isProxyable(ctx, bucket) && (errors.Is(err, errFileNotFound) || errors.Is(err, errFileVersionNotFound)) {
oi, proxy, err := proxyHeadToReplicationTarget(ctx, bucket, object, opts)
if proxy {
return oi, err
}
}
return objInfo, toObjectErr(err, bucket, object)
}
objInfo = fi.ToObjectInfo(bucket, object)
if objInfo.TransitionStatus == lifecycle.TransitionComplete {