frostfs-http-gw/internal/handler/handler.go

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package handler
import (
"context"
"errors"
"fmt"
"io"
"net/url"
"strings"
"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/cache"
"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/data"
"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/handler/middleware"
"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/logs"
"git.frostfs.info/TrueCloudLab/frostfs-http-gw/resolver"
"git.frostfs.info/TrueCloudLab/frostfs-http-gw/response"
"git.frostfs.info/TrueCloudLab/frostfs-http-gw/tree"
"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container"
cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
"github.com/valyala/fasthttp"
"go.uber.org/zap"
)
type Config interface {
DefaultTimestamp() bool
ZipCompression() bool
ClientCut() bool
BufferMaxSizeForPut() uint64
NamespaceHeader() string
}
type Handler struct {
log *zap.Logger
pool *pool.Pool
ownerID *user.ID
config Config
containerResolver *resolver.ContainerResolver
tree *tree.Tree
cache *cache.BucketCache
}
func New(params *utils.AppParams, config Config, tree *tree.Tree) *Handler {
return &Handler{
log: params.Logger,
pool: params.Pool,
ownerID: params.Owner,
config: config,
containerResolver: params.Resolver,
tree: tree,
cache: params.Cache,
}
}
// byAddress is a wrapper for function (e.g. request.headObject, request.receiveFile) that
// prepares request and object address to it.
func (h *Handler) byAddress(c *fasthttp.RequestCtx, f func(context.Context, request, oid.Address)) {
var (
idCnr, _ = c.UserValue("cid").(string)
idObj, _ = c.UserValue("oid").(string)
log = h.log.With(zap.String("cid", idCnr), zap.String("oid", idObj))
)
ctx := utils.GetContextFromRequest(c)
bktInfo, err := h.getBucketInfo(ctx, idCnr, log)
if err != nil {
logAndSendBucketError(c, log, err)
return
}
objID := new(oid.ID)
if err = objID.DecodeString(idObj); err != nil {
log.Error(logs.WrongObjectID, zap.Error(err))
response.Error(c, "wrong object id", fasthttp.StatusBadRequest)
return
}
var addr oid.Address
addr.SetContainer(bktInfo.CID)
addr.SetObject(*objID)
f(ctx, *h.newRequest(c, log), addr)
}
// byObjectName is a wrapper for function (e.g. request.headObject, request.receiveFile) that
// prepares request and object address to it.
func (h *Handler) byObjectName(req *fasthttp.RequestCtx, f func(context.Context, request, oid.Address)) {
var (
bucketname = req.UserValue("cid").(string)
key = req.UserValue("oid").(string)
log = h.log.With(zap.String("bucketname", bucketname), zap.String("key", key))
)
ctx := utils.GetContextFromRequest(req)
bktInfo, err := h.getBucketInfo(ctx, bucketname, log)
if err != nil {
logAndSendBucketError(req, log, err)
return
}
foundOid, err := h.tree.GetLatestVersion(ctx, &bktInfo.CID, key)
if err != nil {
if errors.Is(err, tree.ErrNodeAccessDenied) {
response.Error(req, "Access Denied", fasthttp.StatusForbidden)
return
}
log.Error(logs.GetLatestObjectVersion, zap.Error(err))
response.Error(req, "object wasn't found", fasthttp.StatusNotFound)
return
}
if foundOid.DeleteMarker {
log.Error(logs.ObjectWasDeleted)
response.Error(req, "object deleted", fasthttp.StatusNotFound)
return
}
var addr oid.Address
addr.SetContainer(bktInfo.CID)
addr.SetObject(foundOid.OID)
f(ctx, *h.newRequest(req, log), addr)
}
// byAttribute is a wrapper similar to byAddress.
func (h *Handler) byAttribute(c *fasthttp.RequestCtx, f func(context.Context, request, oid.Address)) {
var (
scid, _ = c.UserValue("cid").(string)
key, _ = url.QueryUnescape(c.UserValue("attr_key").(string))
val, _ = url.QueryUnescape(c.UserValue("attr_val").(string))
log = h.log.With(zap.String("cid", scid), zap.String("attr_key", key), zap.String("attr_val", val))
)
ctx := utils.GetContextFromRequest(c)
bktInfo, err := h.getBucketInfo(ctx, scid, log)
if err != nil {
logAndSendBucketError(c, log, err)
return
}
res, err := h.search(ctx, &bktInfo.CID, key, val, object.MatchStringEqual)
if err != nil {
log.Error(logs.CouldNotSearchForObjects, zap.Error(err))
response.Error(c, "could not search for objects: "+err.Error(), fasthttp.StatusBadRequest)
return
}
defer res.Close()
buf := make([]oid.ID, 1)
n, err := res.Read(buf)
if n == 0 {
if errors.Is(err, io.EOF) {
log.Error(logs.ObjectNotFound, zap.Error(err))
response.Error(c, "object not found", fasthttp.StatusNotFound)
return
}
log.Error(logs.ReadObjectListFailed, zap.Error(err))
response.Error(c, "read object list failed: "+err.Error(), fasthttp.StatusBadRequest)
return
}
var addrObj oid.Address
addrObj.SetContainer(bktInfo.CID)
addrObj.SetObject(buf[0])
f(ctx, *h.newRequest(c, log), addrObj)
}
// resolveContainer decode container id, if it's not a valid container id
// then trey to resolve name using provided resolver.
func (h *Handler) resolveContainer(ctx context.Context, containerID string) (*cid.ID, error) {
cnrID := new(cid.ID)
err := cnrID.DecodeString(containerID)
if err != nil {
cnrID, err = h.containerResolver.Resolve(ctx, containerID)
if err != nil && strings.Contains(err.Error(), "not found") {
err = fmt.Errorf("%w: %s", new(apistatus.ContainerNotFound), err.Error())
}
}
return cnrID, err
}
func (h *Handler) getBucketInfo(ctx context.Context, containerName string, log *zap.Logger) (*data.BucketInfo, error) {
ns, err := middleware.GetNamespace(ctx)
if err != nil {
return nil, err
}
if bktInfo := h.cache.Get(ns, containerName); bktInfo != nil {
return bktInfo, nil
}
cnrID, err := h.resolveContainer(ctx, containerName)
if err != nil {
return nil, err
}
bktInfo, err := h.readContainer(ctx, *cnrID)
if err != nil {
return nil, err
}
if err = h.cache.Put(bktInfo); err != nil {
log.Warn(logs.CouldntPutBucketIntoCache,
zap.String("bucket name", bktInfo.Name),
zap.Stringer("bucket cid", bktInfo.CID),
zap.Error(err))
}
return bktInfo, nil
}
func (h *Handler) readContainer(ctx context.Context, cnrID cid.ID) (*data.BucketInfo, error) {
prm := pool.PrmContainerGet{ContainerID: cnrID}
res, err := h.pool.GetContainer(ctx, prm)
if err != nil {
return nil, fmt.Errorf("get frostfs container '%s': %w", cnrID.String(), err)
}
bktInfo := &data.BucketInfo{
CID: cnrID,
Name: cnrID.EncodeToString(),
}
if domain := container.ReadDomain(res); domain.Name() != "" {
bktInfo.Name = domain.Name()
bktInfo.Zone = domain.Zone()
}
bktInfo.HomomorphicHashDisabled = container.IsHomomorphicHashingDisabled(res)
return bktInfo, err
}