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-rw-r--r--src/plugins/hs_apps/http_client_cli.c503
1 files changed, 503 insertions, 0 deletions
diff --git a/src/plugins/hs_apps/http_client_cli.c b/src/plugins/hs_apps/http_client_cli.c
new file mode 100644
index 00000000000..f331670c58f
--- /dev/null
+++ b/src/plugins/hs_apps/http_client_cli.c
@@ -0,0 +1,503 @@
+/*
+ * Copyright (c) 2022 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <vnet/session/application.h>
+#include <vnet/session/application_interface.h>
+#include <vnet/session/session.h>
+#include <http/http.h>
+#include <hs_apps/http_cli.h>
+
+typedef struct
+{
+ CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
+ u32 session_index;
+ u32 thread_index;
+ u32 rx_offset;
+ u32 vpp_session_index;
+ u32 to_recv;
+ u8 is_closed;
+} hcc_session_t;
+
+typedef struct
+{
+ hcc_session_t *sessions;
+ u8 *rx_buf;
+ u32 thread_index;
+} hcc_worker_t;
+
+typedef struct
+{
+ hcc_worker_t *wrk;
+ u32 app_index;
+
+ u32 prealloc_fifos;
+ u32 private_segment_size;
+ u32 fifo_size;
+ u8 *uri;
+ u8 *http_query;
+ session_endpoint_cfg_t connect_sep;
+
+ u8 test_client_attached;
+ vlib_main_t *vlib_main;
+ u32 cli_node_index;
+ u8 *http_response;
+} hcc_main_t;
+
+typedef enum
+{
+ HCC_REPLY_RECEIVED = 100,
+} hcc_cli_signal_t;
+
+static hcc_main_t hcc_main;
+
+static hcc_worker_t *
+hcc_worker_get (u32 thread_index)
+{
+ return vec_elt_at_index (hcc_main.wrk, thread_index);
+}
+
+static hcc_session_t *
+hcc_session_alloc (hcc_worker_t *wrk)
+{
+ hcc_session_t *hs;
+ pool_get_zero (wrk->sessions, hs);
+ hs->session_index = hs - wrk->sessions;
+ hs->thread_index = wrk->thread_index;
+ return hs;
+}
+
+static hcc_session_t *
+hcc_session_get (u32 hs_index, u32 thread_index)
+{
+ hcc_worker_t *wrk = hcc_worker_get (thread_index);
+ return pool_elt_at_index (wrk->sessions, hs_index);
+}
+
+static void
+hcc_session_free (u32 thread_index, hcc_session_t *hs)
+{
+ hcc_worker_t *wrk = hcc_worker_get (thread_index);
+ pool_put (wrk->sessions, hs);
+}
+
+static int
+hcc_ts_accept_callback (session_t *ts)
+{
+ clib_warning ("bug");
+ return -1;
+}
+
+static void
+hcc_ts_disconnect_callback (session_t *s)
+{
+ hcc_main_t *hcm = &hcc_main;
+ vnet_disconnect_args_t _a = { 0 }, *a = &_a;
+
+ a->handle = session_handle (s);
+ a->app_index = hcm->app_index;
+ vnet_disconnect_session (a);
+}
+
+static int
+hcc_ts_connected_callback (u32 app_index, u32 hc_index, session_t *as,
+ session_error_t err)
+{
+ hcc_main_t *hcm = &hcc_main;
+ hcc_session_t *hs, *new_hs;
+ hcc_worker_t *wrk;
+ http_msg_t msg;
+ int rv;
+
+ if (err)
+ {
+ clib_warning ("connected error: hc_index(%d): %U", hc_index,
+ format_session_error, err);
+ return -1;
+ }
+
+ /* TODO delete half open session once the support is added in http layer */
+ hs = hcc_session_get (hc_index, 0);
+ wrk = hcc_worker_get (as->thread_index);
+ new_hs = hcc_session_alloc (wrk);
+ clib_memcpy_fast (new_hs, hs, sizeof (*hs));
+
+ hs->vpp_session_index = as->session_index;
+
+ msg.type = HTTP_MSG_REQUEST;
+ msg.method_type = HTTP_REQ_GET;
+ msg.content_type = HTTP_CONTENT_TEXT_HTML;
+ msg.data.type = HTTP_MSG_DATA_INLINE;
+ msg.data.len = vec_len (hcm->http_query);
+
+ svm_fifo_seg_t segs[2] = { { (u8 *) &msg, sizeof (msg) },
+ { hcm->http_query, vec_len (hcm->http_query) } };
+
+ rv = svm_fifo_enqueue_segments (as->tx_fifo, segs, 2, 0 /* allow partial */);
+ if (rv < 0 || rv != sizeof (msg) + vec_len (hcm->http_query))
+ {
+ clib_warning ("failed app enqueue");
+ return -1;
+ }
+
+ if (svm_fifo_set_event (as->tx_fifo))
+ session_send_io_evt_to_thread (as->tx_fifo, SESSION_IO_EVT_TX);
+
+ return 0;
+}
+
+static void
+hcc_ts_reset_callback (session_t *s)
+{
+ hcc_main_t *hcm = &hcc_main;
+ hcc_session_t *hs;
+ vnet_disconnect_args_t _a = { 0 }, *a = &_a;
+
+ hs = hcc_session_get (s->opaque, s->thread_index);
+ hs->is_closed = 1;
+
+ a->handle = session_handle (s);
+ a->app_index = hcm->app_index;
+ vnet_disconnect_session (a);
+}
+
+static int
+hcc_ts_tx_callback (session_t *ts)
+{
+ clib_warning ("bug");
+ return -1;
+}
+
+static void
+hcc_session_disconnect (session_t *s)
+{
+ hcc_main_t *hcm = &hcc_main;
+ vnet_disconnect_args_t _a = { 0 }, *a = &_a;
+ a->handle = session_handle (s);
+ a->app_index = hcm->app_index;
+ vnet_disconnect_session (a);
+}
+
+static int
+hcc_ts_rx_callback (session_t *ts)
+{
+ hcc_main_t *hcm = &hcc_main;
+ hcc_session_t *hs;
+ http_msg_t msg;
+ int rv;
+
+ hs = hcc_session_get (ts->opaque, ts->thread_index);
+
+ if (hs->is_closed)
+ {
+ clib_warning ("session is closed");
+ return 0;
+ }
+
+ if (!hs->to_recv)
+ {
+ rv = svm_fifo_dequeue (ts->rx_fifo, sizeof (msg), (u8 *) &msg);
+ ASSERT (rv == sizeof (msg));
+
+ if (msg.type != HTTP_MSG_REPLY || msg.code != HTTP_STATUS_OK)
+ {
+ clib_warning ("unexpected msg type %d", msg.type);
+ return 0;
+ }
+ vec_validate (hcm->http_response, msg.data.len - 1);
+ vec_reset_length (hcm->http_response);
+ hs->to_recv = msg.data.len;
+ }
+
+ u32 max_deq = svm_fifo_max_dequeue (ts->rx_fifo);
+
+ u32 n_deq = clib_min (hs->to_recv, max_deq);
+ u32 curr = vec_len (hcm->http_response);
+ rv = svm_fifo_dequeue (ts->rx_fifo, n_deq, hcm->http_response + curr);
+ if (rv < 0)
+ {
+ clib_warning ("app dequeue failed");
+ return -1;
+ }
+
+ if (rv != n_deq)
+ return -1;
+
+ vec_set_len (hcm->http_response, curr + n_deq);
+ ASSERT (hs->to_recv >= rv);
+ hs->to_recv -= rv;
+
+ if (hs->to_recv == 0)
+ {
+ hcc_session_disconnect (ts);
+ vlib_process_signal_event_mt (hcm->vlib_main, hcm->cli_node_index,
+ HCC_REPLY_RECEIVED, 0);
+ }
+
+ return 0;
+}
+
+static void
+hcc_ts_cleanup_callback (session_t *s, session_cleanup_ntf_t ntf)
+{
+ hcc_session_t *hs;
+
+ hs = hcc_session_get (s->thread_index, s->opaque);
+ if (!hs)
+ return;
+
+ hcc_session_free (s->thread_index, hs);
+}
+
+static session_cb_vft_t hcc_session_cb_vft = {
+ .session_accept_callback = hcc_ts_accept_callback,
+ .session_disconnect_callback = hcc_ts_disconnect_callback,
+ .session_connected_callback = hcc_ts_connected_callback,
+ .builtin_app_rx_callback = hcc_ts_rx_callback,
+ .builtin_app_tx_callback = hcc_ts_tx_callback,
+ .session_reset_callback = hcc_ts_reset_callback,
+ .session_cleanup_callback = hcc_ts_cleanup_callback,
+};
+
+static clib_error_t *
+hcc_attach ()
+{
+ hcc_main_t *hcm = &hcc_main;
+ vnet_app_attach_args_t _a, *a = &_a;
+ u64 options[18];
+ u32 segment_size = 128 << 20;
+ int rv;
+
+ if (hcm->private_segment_size)
+ segment_size = hcm->private_segment_size;
+
+ clib_memset (a, 0, sizeof (*a));
+ clib_memset (options, 0, sizeof (options));
+
+ a->api_client_index = ~0;
+ a->name = format (0, "http_cli_client");
+ a->session_cb_vft = &hcc_session_cb_vft;
+ a->options = options;
+ a->options[APP_OPTIONS_SEGMENT_SIZE] = segment_size;
+ a->options[APP_OPTIONS_ADD_SEGMENT_SIZE] = segment_size;
+ a->options[APP_OPTIONS_RX_FIFO_SIZE] =
+ hcm->fifo_size ? hcm->fifo_size : 8 << 10;
+ a->options[APP_OPTIONS_TX_FIFO_SIZE] =
+ hcm->fifo_size ? hcm->fifo_size : 32 << 10;
+ a->options[APP_OPTIONS_FLAGS] = APP_OPTIONS_FLAGS_IS_BUILTIN;
+ a->options[APP_OPTIONS_PREALLOC_FIFO_PAIRS] = hcm->prealloc_fifos;
+
+ if ((rv = vnet_application_attach (a)))
+ return clib_error_return (0, "attach returned %d", rv);
+
+ hcm->app_index = a->app_index;
+ vec_free (a->name);
+ hcm->test_client_attached = 1;
+ return 0;
+}
+
+static clib_error_t *
+hcc_connect ()
+{
+ vnet_connect_args_t _a = {}, *a = &_a;
+ hcc_main_t *hcm = &hcc_main;
+ hcc_worker_t *wrk;
+ hcc_session_t *hs;
+
+ clib_memcpy (&a->sep_ext, &hcm->connect_sep, sizeof (hcm->connect_sep));
+ a->app_index = hcm->app_index;
+
+ /* allocate http session on main thread */
+ wrk = hcc_worker_get (0);
+ hs = hcc_session_alloc (wrk);
+ a->api_context = hs->session_index;
+
+ int rv = vnet_connect (a);
+
+ if (rv)
+ return clib_error_return (0, "connect returned: %U", format_session_error,
+ rv);
+ return 0;
+}
+
+static clib_error_t *
+hcc_run (vlib_main_t *vm)
+{
+ vlib_thread_main_t *vtm = vlib_get_thread_main ();
+ hcc_main_t *hcm = &hcc_main;
+ uword event_type, *event_data = 0;
+ u32 num_threads;
+ clib_error_t *err = 0;
+ hcc_worker_t *wrk;
+
+ num_threads = 1 /* main thread */ + vtm->n_threads;
+ vec_validate (hcm->wrk, num_threads);
+ vec_foreach (wrk, hcm->wrk)
+ {
+ wrk->thread_index = wrk - hcm->wrk;
+ }
+
+ if ((err = hcc_attach ()))
+ {
+ return clib_error_return (0, "http client attach: %U", format_clib_error,
+ err);
+ }
+
+ if ((err = hcc_connect ()))
+ {
+ return clib_error_return (0, "http client connect: %U",
+ format_clib_error, err);
+ }
+
+ vlib_process_wait_for_event_or_clock (vm, 10);
+ event_type = vlib_process_get_events (vm, &event_data);
+ switch (event_type)
+ {
+ case ~0:
+ err = clib_error_return (0, "timeout");
+ goto cleanup;
+
+ case HCC_REPLY_RECEIVED:
+ vlib_cli_output (vm, "%v", hcm->http_response);
+ vec_free (hcm->http_response);
+ break;
+ default:
+ clib_error_return (0, "unexpected event %d", event_type);
+ break;
+ }
+
+cleanup:
+ vec_free (event_data);
+ return err;
+}
+
+static int
+hcc_detach ()
+{
+ hcc_main_t *hcm = &hcc_main;
+ vnet_app_detach_args_t _da, *da = &_da;
+ int rv;
+
+ if (!hcm->test_client_attached)
+ return 0;
+
+ da->app_index = hcm->app_index;
+ da->api_client_index = ~0;
+ rv = vnet_application_detach (da);
+ hcm->test_client_attached = 0;
+ hcm->app_index = ~0;
+
+ return rv;
+}
+
+static clib_error_t *
+hcc_command_fn (vlib_main_t *vm, unformat_input_t *input,
+ vlib_cli_command_t *cmd)
+{
+ unformat_input_t _line_input, *line_input = &_line_input;
+ hcc_main_t *hcm = &hcc_main;
+ u64 seg_size;
+ clib_error_t *err = 0;
+ int rv;
+
+ hcm->prealloc_fifos = 0;
+ hcm->private_segment_size = 0;
+ hcm->fifo_size = 0;
+
+ if (hcm->test_client_attached)
+ return clib_error_return (0, "failed: already running!");
+
+ /* Get a line of input. */
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return clib_error_return (0, "expected URI");
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (line_input, "prealloc-fifos %d", &hcm->prealloc_fifos))
+ ;
+ else if (unformat (line_input, "private-segment-size %U",
+ unformat_memory_size, &seg_size))
+ hcm->private_segment_size = seg_size;
+ else if (unformat (line_input, "fifo-size %d", &hcm->fifo_size))
+ hcm->fifo_size <<= 10;
+ else if (unformat (line_input, "uri %s", &hcm->uri))
+ ;
+ else if (unformat (line_input, "query %s", &hcm->http_query))
+ ;
+ else
+ {
+ err = clib_error_return (0, "unknown input `%U'",
+ format_unformat_error, line_input);
+ goto done;
+ }
+ }
+
+ hcm->cli_node_index = vlib_get_current_process (vm)->node_runtime.node_index;
+
+ if (!hcm->uri)
+ {
+ err = clib_error_return (0, "URI not defined");
+ goto done;
+ }
+
+ if ((rv = parse_uri ((char *) hcm->uri, &hcm->connect_sep)))
+ {
+ err = clib_error_return (0, "Uri parse error: %d", rv);
+ goto done;
+ }
+
+ vnet_session_enable_disable (vm, 1 /* turn on TCP, etc. */);
+
+ err = hcc_run (vm);
+
+ if (hcc_detach ())
+ {
+ /* don't override last error */
+ if (!err)
+ err = clib_error_return (0, "failed: app detach");
+ clib_warning ("WARNING: app detach failed...");
+ }
+
+done:
+ vec_free (hcm->uri);
+ vec_free (hcm->http_query);
+ unformat_free (line_input);
+ return err;
+}
+
+VLIB_CLI_COMMAND (hcc_command, static) = {
+ .path = "http cli client",
+ .short_help = "uri http://<ip-addr> query <query-string>",
+ .function = hcc_command_fn,
+};
+
+static clib_error_t *
+hcc_main_init (vlib_main_t *vm)
+{
+ hcc_main_t *hcm = &hcc_main;
+
+ hcm->app_index = ~0;
+ hcm->vlib_main = vm;
+ return 0;
+}
+
+VLIB_INIT_FUNCTION (hcc_main_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */