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-rw-r--r--src/plugins/unittest/api_test.c101
1 files changed, 101 insertions, 0 deletions
diff --git a/src/plugins/unittest/api_test.c b/src/plugins/unittest/api_test.c
new file mode 100644
index 00000000000..4bed50c2969
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+++ b/src/plugins/unittest/api_test.c
@@ -0,0 +1,101 @@
+/* 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");
+ 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,
+};