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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab ft=cpp
#include "svc_meta_be.h"
#include "rgw/rgw_mdlog.h"
#define dout_subsys ceph_subsys_rgw
RGWSI_MetaBackend::Context::~Context() {} // needed, even though destructor is pure virtual
RGWSI_MetaBackend::Module::~Module() {} // ditto
RGWSI_MetaBackend::PutParams::~PutParams() {} // ...
RGWSI_MetaBackend::GetParams::~GetParams() {} // ...
RGWSI_MetaBackend::RemoveParams::~RemoveParams() {} // ...
int RGWSI_MetaBackend::pre_modify(const DoutPrefixProvider *dpp,
RGWSI_MetaBackend::Context *ctx,
const string& key,
RGWMetadataLogData& log_data,
RGWObjVersionTracker *objv_tracker,
RGWMDLogStatus op_type,
optional_yield y)
{
/* if write version has not been set, and there's a read version, set it so that we can
* log it
*/
if (objv_tracker &&
objv_tracker->read_version.ver && !objv_tracker->write_version.ver) {
objv_tracker->write_version = objv_tracker->read_version;
objv_tracker->write_version.ver++;
}
return 0;
}
int RGWSI_MetaBackend::post_modify(const DoutPrefixProvider *dpp,
RGWSI_MetaBackend::Context *ctx,
const string& key,
RGWMetadataLogData& log_data,
RGWObjVersionTracker *objv_tracker, int ret,
optional_yield y)
{
return ret;
}
int RGWSI_MetaBackend::prepare_mutate(RGWSI_MetaBackend::Context *ctx,
const string& key,
const real_time& mtime,
RGWObjVersionTracker *objv_tracker,
optional_yield y,
const DoutPrefixProvider *dpp)
{
real_time orig_mtime;
int ret = call_with_get_params(&orig_mtime, [&](GetParams& params) {
return get_entry(ctx, key, params, objv_tracker, y, dpp);
});
if (ret < 0 && ret != -ENOENT) {
return ret;
}
if (objv_tracker->write_version.tag.empty()) {
if (objv_tracker->read_version.tag.empty()) {
objv_tracker->generate_new_write_ver(cct);
} else {
objv_tracker->write_version = objv_tracker->read_version;
objv_tracker->write_version.ver++;
}
}
return 0;
}
int RGWSI_MetaBackend::do_mutate(RGWSI_MetaBackend::Context *ctx,
const string& key,
const ceph::real_time& mtime,
RGWObjVersionTracker *objv_tracker,
RGWMDLogStatus op_type,
optional_yield y,
std::function<int()> f,
bool generic_prepare,
const DoutPrefixProvider *dpp)
{
int ret;
if (generic_prepare) {
ret = prepare_mutate(ctx, key, mtime, objv_tracker, y, dpp);
if (ret < 0 ||
ret == STATUS_NO_APPLY) {
return ret;
}
}
RGWMetadataLogData log_data;
ret = pre_modify(dpp, ctx, key, log_data, objv_tracker, op_type, y);
if (ret < 0) {
return ret;
}
ret = f();
/* cascading ret into post_modify() */
ret = post_modify(dpp, ctx, key, log_data, objv_tracker, ret, y);
if (ret < 0)
return ret;
return 0;
}
int RGWSI_MetaBackend::get(Context *ctx,
const string& key,
GetParams& params,
RGWObjVersionTracker *objv_tracker,
optional_yield y,
const DoutPrefixProvider *dpp)
{
return get_entry(ctx, key, params, objv_tracker, y, dpp);
}
int RGWSI_MetaBackend::put(Context *ctx,
const string& key,
PutParams& params,
RGWObjVersionTracker *objv_tracker,
optional_yield y,
const DoutPrefixProvider *dpp)
{
std::function<int()> f = [&]() {
return put_entry(dpp, ctx, key, params, objv_tracker, y);
};
return do_mutate(ctx, key, params.mtime, objv_tracker,
MDLOG_STATUS_WRITE,
y,
f,
false,
dpp);
}
int RGWSI_MetaBackend::remove(Context *ctx,
const string& key,
RemoveParams& params,
RGWObjVersionTracker *objv_tracker,
optional_yield y,
const DoutPrefixProvider *dpp)
{
std::function<int()> f = [&]() {
return remove_entry(dpp, ctx, key, params, objv_tracker, y);
};
return do_mutate(ctx, key, params.mtime, objv_tracker,
MDLOG_STATUS_REMOVE,
y,
f,
false,
dpp);
}
int RGWSI_MetaBackend::mutate(Context *ctx,
const std::string& key,
MutateParams& params,
RGWObjVersionTracker *objv_tracker,
optional_yield y,
std::function<int()> f,
const DoutPrefixProvider *dpp)
{
return do_mutate(ctx, key, params.mtime, objv_tracker,
params.op_type, y,
f,
false,
dpp);
}
int RGWSI_MetaBackend_Handler::call(std::optional<RGWSI_MetaBackend_CtxParams> bectx_params,
std::function<int(Op *)> f)
{
return be->call(bectx_params, [&](RGWSI_MetaBackend::Context *ctx) {
ctx->init(this);
Op op(be, ctx);
return f(&op);
});
}
RGWSI_MetaBackend_Handler::Op_ManagedCtx::Op_ManagedCtx(RGWSI_MetaBackend_Handler *handler) : Op(handler->be, handler->be->alloc_ctx())
{
auto c = ctx();
c->init(handler);
pctx.reset(c);
}
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