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/*
Copyright (c) 2006-2018 Red Hat, Inc. <http://www.redhat.com>
This file is part of GlusterFS.
This file is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3 or
later), or the GNU General Public License, version 2 (GPLv2), in all
cases as published by the Free Software Foundation.
*/
#include "template.h"
#include "statedump.h"
static int32_t
template_mem_acct_init(xlator_t *this)
{
int ret = -1;
GF_VALIDATE_OR_GOTO("template", this, out);
ret = xlator_mem_acct_init(this, gf_template_mt_end + 1);
if (ret != 0) {
gf_msg(this->name, GF_LOG_ERROR, ENOMEM, TEMPLATE_MSG_NO_MEMORY,
"Memory accounting init failed");
goto out;
}
ret = 0;
out:
return ret;
}
static int32_t
template_priv_to_dict(xlator_t *this, dict_t *dict, char *brickname)
{
int ret = 0;
template_private_t *priv = NULL;
priv = this->private;
ret = dict_set_uint64(dict, "template.dummy", priv->dummy);
if (ret)
gf_msg_debug(this->name, ENOMEM, "dict_set of dummy key failed");
return 0;
}
static int32_t
template_priv(xlator_t *this)
{
template_private_t *priv = NULL;
priv = this->private;
gf_proc_dump_write("template.dummy", "%lu", priv->dummy);
return 0;
}
static int32_t
template_dump_metrics(xlator_t *this, int fd)
{
template_private_t *priv = NULL;
priv = this->private;
/* NOTE: currently this is adding private variable, which can
be constant here. But in reality, things which are changing
can be added here, so we get to plot them on graph. */
dprintf(fd, "%s.private.dummy %d\n", this->name, priv->dummy);
return 0;
}
static int32_t
template_init(xlator_t *this)
{
int ret = -1;
template_private_t *priv = NULL;
if (!this->children || this->children->next) {
gf_msg(this->name, GF_LOG_ERROR, EINVAL, TEMPLATE_MSG_NO_GRAPH,
"not configured with exactly one child. exiting");
goto out;
}
if (!this->parents) {
gf_msg(this->name, GF_LOG_ERROR, EINVAL, TEMPLATE_MSG_NO_GRAPH,
"dangling volume. check volfile ");
goto out;
}
priv = GF_CALLOC(1, sizeof(template_private_t), gf_template_mt_private_t);
if (!priv) {
gf_msg(this->name, GF_LOG_ERROR, ENOMEM, TEMPLATE_MSG_NO_MEMORY,
"priv allocation failed");
goto out;
}
GF_OPTION_INIT("dummy", priv->dummy, int32, out);
this->private = priv;
priv = NULL;
ret = 0;
out:
if (priv)
GF_FREE(priv);
return ret;
}
static int
template_reconfigure(xlator_t *this, dict_t *options)
{
int ret = -1;
template_private_t *priv = NULL;
priv = this->private;
GF_OPTION_RECONF("dummy", priv->dummy, options, int32, out);
ret = 0;
out:
return ret;
}
static void
template_fini(xlator_t *this)
{
template_private_t *priv = NULL;
priv = this->private;
this->private = NULL;
GF_FREE(priv);
}
static int
template_notify(xlator_t *this, int32_t event, void *data, ...)
{
switch (event) {
default:
default_notify(this, event, data);
gf_msg_debug(this->name, 0, "event %d received", event);
}
return 0;
}
struct xlator_fops template_fops = {};
struct xlator_cbks template_cbks = {};
struct xlator_dumpops template_dumpops = {
.priv = template_priv,
.priv_to_dict = template_priv_to_dict,
};
struct volume_options template_options[] = {
{
.key = {"dummy"},
.type = GF_OPTION_TYPE_INT,
.min = 1,
.max = 1024,
.default_value = "1",
.description = "a dummy option to show how to set the option",
.op_version = {GD_OP_VERSION_5_0},
.flags = OPT_FLAG_SETTABLE | OPT_FLAG_DOC,
.level = OPT_STATUS_EXPERIMENTAL,
.tags = {"development", "experimental", "template"},
},
{.key = {NULL}},
};
xlator_api_t xlator_api = {
.init = template_init,
.fini = template_fini,
.notify = template_notify,
.reconfigure = template_reconfigure,
.mem_acct_init = template_mem_acct_init,
.dump_metrics = template_dump_metrics,
.op_version = {GD_OP_VERSION_5_0},
.dumpops = &template_dumpops,
.fops = &template_fops,
.cbks = &template_cbks,
.options = template_options,
.identifier = "template",
};
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