| /* |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 <proton/connection.h> |
| #include <proton/condition.h> |
| #include <proton/delivery.h> |
| #include <proton/link.h> |
| #include <proton/message.h> |
| #include <proton/proactor.h> |
| #include <proton/session.h> |
| #include <proton/transport.h> |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| |
| typedef struct app_data_t { |
| const char *host, *port; |
| const char *amqp_address; |
| const char *container_id; |
| int message_count; |
| |
| pn_proactor_t *proactor; |
| int received; |
| bool finished; |
| pn_rwbytes_t msgin; /* Partially received message */ |
| } app_data_t; |
| |
| static const int BATCH = 1000; /* Batch size for unlimited receive */ |
| |
| static int exit_code = 0; |
| |
| static void check_condition(pn_event_t *e, pn_condition_t *cond) { |
| if (pn_condition_is_set(cond)) { |
| fprintf(stderr, "%s: %s: %s\n", pn_event_type_name(pn_event_type(e)), |
| pn_condition_get_name(cond), pn_condition_get_description(cond)); |
| pn_connection_close(pn_event_connection(e)); |
| exit_code = 1; |
| } |
| } |
| |
| static void decode_message(pn_rwbytes_t data) { |
| pn_message_t *m = pn_message(); |
| int err = pn_message_decode(m, data.start, data.size); |
| if (!err) { |
| /* Print the decoded message */ |
| pn_string_t *s = pn_string(NULL); |
| pn_inspect(pn_message_body(m), s); |
| printf("%s\n", pn_string_get(s)); |
| pn_free(s); |
| pn_message_free(m); |
| free(data.start); |
| } else { |
| fprintf(stderr, "decode_message: %s\n", pn_code(err)); |
| exit_code = 1; |
| } |
| } |
| |
| /* Return true to continue, false to exit */ |
| static bool handle(app_data_t* app, pn_event_t* event) { |
| switch (pn_event_type(event)) { |
| |
| case PN_CONNECTION_INIT: { |
| pn_connection_t* c = pn_event_connection(event); |
| pn_session_t* s = pn_session(c); |
| pn_connection_set_container(c, app->container_id); |
| pn_connection_open(c); |
| pn_session_open(s); |
| { |
| pn_link_t* l = pn_receiver(s, "my_receiver"); |
| pn_terminus_set_address(pn_link_source(l), app->amqp_address); |
| pn_link_open(l); |
| /* cannot receive without granting credit: */ |
| pn_link_flow(l, app->message_count ? app->message_count : BATCH); |
| } |
| } break; |
| |
| case PN_DELIVERY: { |
| /* A message (or part of a message) has been received */ |
| pn_delivery_t *d = pn_event_delivery(event); |
| if (pn_delivery_readable(d)) { |
| pn_link_t *l = pn_delivery_link(d); |
| size_t size = pn_delivery_pending(d); |
| pn_rwbytes_t* m = &app->msgin; /* Append data to incoming message buffer */ |
| int recv; |
| size_t oldsize = m->size; |
| m->size += size; |
| m->start = (char*)realloc(m->start, m->size); |
| recv = pn_link_recv(l, m->start + oldsize, m->size); |
| if (recv == PN_ABORTED) { |
| printf("Message aborted\n"); |
| m->size = 0; /* Forget the data we accumulated */ |
| pn_delivery_settle(d); /* Free the delivery so we can receive the next message */ |
| pn_link_flow(l, 1); /* Replace credit for aborted message */ |
| } else if (recv < 0 && recv != PN_EOS) { /* Unexpected error */ |
| pn_condition_format(pn_link_condition(l), "broker", "PN_DELIVERY error: %s", pn_code(recv)); |
| pn_link_close(l); /* Unexpected error, close the link */ |
| } else if (!pn_delivery_partial(d)) { /* Message is complete */ |
| decode_message(*m); |
| *m = pn_rwbytes_null; /* Reset the buffer for the next message*/ |
| /* Accept the delivery */ |
| pn_delivery_update(d, PN_ACCEPTED); |
| pn_delivery_settle(d); /* settle and free d */ |
| if (app->message_count == 0) { |
| /* receive forever - see if more credit is needed */ |
| if (pn_link_credit(l) < BATCH/2) { |
| /* Grant enough credit to bring it up to BATCH: */ |
| pn_link_flow(l, BATCH - pn_link_credit(l)); |
| } |
| } else if (++app->received >= app->message_count) { |
| pn_session_t *ssn = pn_link_session(l); |
| printf("%d messages received\n", app->received); |
| pn_link_close(l); |
| pn_session_close(ssn); |
| pn_connection_close(pn_session_connection(ssn)); |
| } |
| } |
| } |
| break; |
| } |
| |
| case PN_TRANSPORT_CLOSED: |
| check_condition(event, pn_transport_condition(pn_event_transport(event))); |
| break; |
| |
| case PN_CONNECTION_REMOTE_CLOSE: |
| check_condition(event, pn_connection_remote_condition(pn_event_connection(event))); |
| pn_connection_close(pn_event_connection(event)); |
| break; |
| |
| case PN_SESSION_REMOTE_CLOSE: |
| check_condition(event, pn_session_remote_condition(pn_event_session(event))); |
| pn_connection_close(pn_event_connection(event)); |
| break; |
| |
| case PN_LINK_REMOTE_CLOSE: |
| case PN_LINK_REMOTE_DETACH: |
| check_condition(event, pn_link_remote_condition(pn_event_link(event))); |
| pn_connection_close(pn_event_connection(event)); |
| break; |
| |
| case PN_PROACTOR_INACTIVE: |
| return false; |
| break; |
| |
| default: |
| break; |
| } |
| return true; |
| } |
| |
| void run(app_data_t *app) { |
| /* Loop and handle events */ |
| do { |
| pn_event_batch_t *events = pn_proactor_wait(app->proactor); |
| pn_event_t *e; |
| for (e = pn_event_batch_next(events); e; e = pn_event_batch_next(events)) { |
| if (!handle(app, e) || exit_code != 0) { |
| return; |
| } |
| } |
| pn_proactor_done(app->proactor, events); |
| } while(true); |
| } |
| |
| int main(int argc, char **argv) { |
| struct app_data_t app = {0}; |
| char addr[PN_MAX_ADDR]; |
| |
| app.container_id = argv[0]; /* Should be unique */ |
| app.host = (argc > 1) ? argv[1] : ""; |
| app.port = (argc > 2) ? argv[2] : "amqp"; |
| app.amqp_address = (argc > 3) ? argv[3] : "examples"; |
| app.message_count = (argc > 4) ? atoi(argv[4]) : 10; |
| |
| /* Create the proactor and connect */ |
| app.proactor = pn_proactor(); |
| pn_proactor_addr(addr, sizeof(addr), app.host, app.port); |
| pn_proactor_connect2(app.proactor, NULL, NULL, addr); |
| run(&app); |
| pn_proactor_free(app.proactor); |
| return exit_code; |
| } |