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/* SPDX-License-Identifier: Apache-2.0
* Copyright(c) 2022 Cisco Systems, Inc.
*/
#include <vnet/vnet.h>
#include <vnet/plugin/plugin.h>
#include <vlibapi/api.h>
#include <vlibmemory/api.h>
#include <vpp/app/version.h>
#include <stdbool.h>
#include <vapi/vapi.h>
#include <vapi/memclnt.api.vapi.h>
#include <vapi/vlib.api.vapi.h>
#include <vapi/vpe.api.vapi.h>
/*
* Example of how to call the VPP binary API from an internal API client.
* Using the VAPI C language binding.
*/
DEFINE_VAPI_MSG_IDS_VPE_API_JSON;
/*
* Connect an VPP binary API client to VPP API
*/
static vapi_ctx_t
connect_to_vpp (void)
{
vapi_ctx_t ctx;
if (vapi_ctx_alloc (&ctx) != VAPI_OK)
{
clib_warning ("ctx_alloc failed");
return 0;
}
if (vapi_connect_from_vpp (ctx, "apifromplugin", 64, 32, VAPI_MODE_BLOCKING,
true) != VAPI_OK)
{
clib_warning ("vapi_connect failed");
vapi_ctx_free (ctx);
return 0;
}
return ctx;
}
/*
* Gets called when the show_version_reply message is received
*/
vapi_error_e
show_version_cb (vapi_ctx_t ctx, void *caller_ctx, vapi_error_e rv,
bool is_last, vapi_payload_show_version_reply *p)
{
if (rv != VAPI_OK)
clib_warning ("Return value: %d", rv);
fformat (
stdout,
"show_version_reply: program: `%s', version: `%s', build directory: "
"`%s', build date: `%s'\n",
p->program, p->version, p->build_directory, p->build_date);
return VAPI_OK;
}
static void *
api_show_version_blocking_fn (void *args)
{
vapi_ctx_t ctx;
if ((ctx = connect_to_vpp ()) == 0)
return clib_error_return (0, "API connection failed");
int called;
vapi_msg_show_version *sv = vapi_alloc_show_version (ctx);
vapi_error_e vapi_rv = vapi_show_version (ctx, sv, show_version_cb, &called);
if (vapi_rv != VAPI_OK)
clib_warning ("call failed");
vapi_disconnect_from_vpp (ctx);
vapi_ctx_free (ctx);
return 0;
}
static clib_error_t *
test_api_test_command_fn (vlib_main_t *vm, unformat_input_t *input,
vlib_cli_command_t *cmd)
{
/* Run call in a pthread */
pthread_t thread;
int rv = pthread_create (&thread, NULL, api_show_version_blocking_fn, 0);
if (rv)
{
return clib_error_return (0, "API call failed");
}
return 0;
}
VLIB_CLI_COMMAND (test_api_command, static) = {
.path = "test api internal",
.short_help = "test internal api client",
.function = test_api_test_command_fn,
};
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