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/*
* Copyright (c) 2023 Balazs Scheidler <balazs.scheidler@axoflow.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As an additional exemption you are allowed to compile & link against the
* OpenSSL libraries as published by the OpenSSL project. See the file
* COPYING for details.
*
*/
#include "filterx/expr-template.h"
#include "filterx/object-message-value.h"
#include "filterx/filterx-eval.h"
#include "template/templates.h"
#include "scratch-buffers.h"
typedef struct _FilterXTemplate
{
FilterXExpr super;
LogTemplate *template;
} FilterXTemplate;
static FilterXObject *
_eval(FilterXExpr *s)
{
FilterXTemplate *self = (FilterXTemplate *) s;
FilterXEvalContext *context = filterx_eval_get_context();
GString *value = scratch_buffers_alloc();
LogMessageValueType t;
/* FIXME: we could go directly to filterx_string_new() here to avoid a round trip in FilterXMessageValue */
/* FIXME/2: let's make this handle literal and trivial templates */
log_template_format_value_and_type_with_context(self->template, context->msgs, context->num_msg,
&context->template_eval_options, value, &t);
/* NOTE: we borrow value->str here which is stored in a scratch buffer
* that should be valid as long as we are traversing the filter
* expressions, thus the FilterXObject is shorter lived than the scratch
* buffer. */
return filterx_message_value_new_borrowed(value->str, value->len, t);
}
static void
_free(FilterXExpr *s)
{
FilterXTemplate *self = (FilterXTemplate *) s;
log_template_unref(self->template);
filterx_expr_free_method(s);
}
/* NOTE: takes the object reference */
FilterXExpr *
filterx_template_new(LogTemplate *template)
{
FilterXTemplate *self = g_new0(FilterXTemplate, 1);
filterx_expr_init_instance(&self->super);
self->super.eval = _eval;
self->super.free_fn = _free;
self->template = template;
return &self->super;
}
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