Annotation of parser3/src/classes/amqp.C, revision 1.20
1.1 moko 1: /** @file
2: Parser: @b amqp parser class.
3:
1.13 moko 4: Copyright (c) 2001-2026 Art. Lebedev Studio (https://www.artlebedev.com)
1.1 moko 5: Authors: Konstantin Morshnev <moko@design.ru>
6: */
7:
8: #include "pa_vmethod_frame.h"
9:
10: #include "pa_request.h"
1.18 moko 11: #include "pa_int.h"
1.1 moko 12: #include "pa_vstring.h"
13: #include "pa_vhash.h"
1.8 moko 14: #include "pa_varray.h"
1.1 moko 15: #include "pa_vbool.h"
1.17 moko 16: #include "pa_vvoid.h"
1.18 moko 17: #include "pa_vdouble.h"
1.1 moko 18: #include "pa_vamqp.h"
1.16 moko 19: #include "pa_os.h"
20: #include "pa_globals.h"
1.1 moko 21:
22: #ifdef WITH_AMQP
23: #include <amqp.h>
24: #include <amqp_tcp_socket.h>
1.5 moko 25: #include <amqp_ssl_socket.h>
1.1 moko 26: #include <amqp_framing.h>
27: #include <stdlib.h>
28: #include <string.h>
29: #endif
30:
1.20 ! moko 31: #ifdef _MSC_VER
! 32: #pragma comment(lib, "rabbitmq.4.lib")
! 33: #endif
! 34:
! 35: volatile const char * IDENT_AMQP_C="$Id: amqp.C,v 1.19 2026/09/15 21:22:19 moko Exp $" IDENT_PA_VAMQP_H;
1.1 moko 36:
37: class MAmqp: public Methoded {
38: public: // VStateless_class
39: Value* create_new_value(Pool&) { return new VAmqp(); }
40: public:
41: MAmqp();
42: };
43:
44: DECLARE_CLASS_VAR(amqp, new MAmqp);
45:
1.6 moko 46: #ifdef WITH_AMQP
47:
1.16 moko 48: static void status_check(VAmqp& self, int ret, const char *detail=""){
1.6 moko 49: if(ret == AMQP_STATUS_OK)
50: return;
51:
1.16 moko 52: self.fstate = VAmqp::CONNECTION_DEAD;
53:
1.6 moko 54: const char* error_str = amqp_error_string2(ret);
55: if(error_str) {
56: throw Exception("amqp", 0, "%sfailed: %s", detail, error_str);
57: } else {
58: throw Exception("amqp", 0, "%sfailed: error %d", detail, ret);
59: }
60: }
61:
1.16 moko 62: static void check(VAmqp& self, amqp_rpc_reply_t rr, const char *detail=""){
1.6 moko 63: if(rr.reply_type == AMQP_RESPONSE_NORMAL)
64: return;
65:
1.16 moko 66: self.fstate = (rr.reply_type == AMQP_RESPONSE_SERVER_EXCEPTION && rr.reply.id == AMQP_CHANNEL_CLOSE_METHOD) ? VAmqp::CHANNEL_DEAD : VAmqp::CONNECTION_DEAD;
67:
1.6 moko 68: // Extract error message from reply
69: const char* error_msg = 0;
70: size_t error_len = 0;
71: if(rr.reply_type == AMQP_RESPONSE_SERVER_EXCEPTION) {
72: if(rr.reply.id == AMQP_CHANNEL_CLOSE_METHOD) {
73: amqp_channel_close_t *m = (amqp_channel_close_t *)rr.reply.decoded;
74: if(m->reply_text.len > 0 && m->reply_text.bytes) {
75: error_msg = (const char*)m->reply_text.bytes;
76: error_len = m->reply_text.len;
77: }
78: } else if(rr.reply.id == AMQP_CONNECTION_CLOSE_METHOD) {
79: amqp_connection_close_t *m = (amqp_connection_close_t *)rr.reply.decoded;
80: if(m->reply_text.len > 0 && m->reply_text.bytes) {
81: error_msg = (const char*)m->reply_text.bytes;
82: error_len = m->reply_text.len;
83: }
84: }
85: }
1.16 moko 86:
1.6 moko 87: if(error_msg) {
88: throw Exception("amqp", 0, "%sfailed: %.*s", detail, (int)error_len, error_msg);
89: } else if(rr.reply_type == AMQP_RESPONSE_LIBRARY_EXCEPTION) {
1.16 moko 90: status_check(self, rr.library_error, detail);
1.6 moko 91: }
92:
93: throw Exception("amqp", 0, "%sfailed", detail);
94: }
95:
1.16 moko 96: static void amqp_connect(VAmqp& self, Request& r, HashStringValue* options) {
1.1 moko 97: const char* host_c = "localhost";
98: int port = 5672;
99: const char* user_c = "guest";
100: const char* pass_c = "guest";
101: const char* vhost_c = "/";
102: const char* locale_c = "en_US";
103: int heartbeat = 30; // seconds
1.5 moko 104: const char* tls_ca = 0;
105: const char* tls_cert = 0;
106: const char* tls_key = 0;
107: bool tls_specified = false;
108: bool tls_verify = true;
1.16 moko 109: int reconnect_interval_sec = 0;
1.1 moko 110:
1.16 moko 111: if(options){
112: for(HashStringValue::Iterator i(*options); i; i.next()){
113: String::Body key=i.key();
114: Value* value=i.value();
115: if(key=="host"){
116: host_c=value->as_string().cstr();
117: } else if(key=="port"){
118: port=r.process(*value).as_int();
119: } else if(key=="user"){
120: user_c=value->as_string().cstr();
121: } else if(key=="password"){
122: pass_c=value->as_string().cstr();
123: } else if(key=="vhost"){
124: vhost_c=value->as_string().cstr();
125: } else if(key=="locale"){
126: locale_c=value->as_string().cstr();
127: } else if(key=="heartbeat"){
128: heartbeat=r.process(*value).as_int();
129: } else if(key=="auto_reconnect"){
130: reconnect_interval_sec=r.process(*value).as_int();
131: } else if(key=="tls"){
132: tls_specified = true;
133: if(HashStringValue* tls_options=value->get_hash()){
134: for(HashStringValue::Iterator t(*tls_options); t; t.next()){
135: String::Body tkey=t.key();
136: Value* tval=t.value();
137: if(tkey=="ca"){
138: tls_ca=tval->as_string().cstr();
139: } else if(tkey=="cert"){
140: tls_cert=tval->as_string().cstr();
141: } else if(tkey=="key"){
142: tls_key=tval->as_string().cstr();
143: } else if(tkey=="verify"){
144: tls_verify=r.process(*tval).as_bool();
145: } else
146: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.5 moko 147: }
1.16 moko 148: }
149: } else
150: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.1 moko 151: }
152: }
153:
154: amqp_connection_state_t conn = amqp_new_connection();
1.5 moko 155: amqp_socket_t* socket = 0;
1.16 moko 156:
1.5 moko 157: if(tls_specified) {
158: socket = amqp_ssl_socket_new(conn);
159: if(!socket)
160: throw Exception("amqp", 0, "failed to create SSL socket");
1.16 moko 161:
1.5 moko 162: // Set CA certificate if provided
163: if(tls_ca)
164: if(amqp_ssl_socket_set_cacert(socket, tls_ca))
165: throw Exception("amqp", 0, "failed to set CA certificate");
1.6 moko 166:
1.5 moko 167: // Set client certificate and key if provided
168: if(tls_cert && tls_key) {
169: if(amqp_ssl_socket_set_key(socket, tls_cert, tls_key))
170: throw Exception("amqp", 0, "failed to set client certificate/key");
171: } else if(tls_cert || tls_key) {
172: throw Exception("amqp", 0, "both cert and key must be specified for TLS");
173: }
1.6 moko 174:
1.5 moko 175: // If CA is provided, peer verification will use it
176: amqp_ssl_socket_set_verify_peer(socket, tls_verify && tls_ca);
177: // If verify=true, enable hostname verification
178: amqp_ssl_socket_set_verify_hostname(socket, tls_verify);
179: } else {
180: socket = amqp_tcp_socket_new(conn);
181: if(!socket)
182: throw Exception("amqp", 0, "failed to create TCP socket");
183: }
1.16 moko 184:
185: status_check(self, amqp_socket_open(socket, host_c, port), tls_specified ? "open SSL socket " : "open TCP socket ");
1.1 moko 186:
187: amqp_rpc_reply_t rlogin = amqp_login(conn, vhost_c, 0, 131072, heartbeat, AMQP_SASL_METHOD_PLAIN, user_c, pass_c);
188: if(rlogin.reply_type != AMQP_RESPONSE_NORMAL){
189: amqp_destroy_connection(conn);
1.16 moko 190: check(self, rlogin, "login ");
1.1 moko 191: }
192:
193: int channel = 1;
194: amqp_channel_open(conn, channel);
195: amqp_rpc_reply_t ropen = amqp_get_rpc_reply(conn);
196: if(ropen.reply_type != AMQP_RESPONSE_NORMAL){
197: amqp_connection_close(conn, AMQP_REPLY_SUCCESS);
198: amqp_destroy_connection(conn);
1.16 moko 199: check(self, ropen, "open channel ");
1.1 moko 200: }
201:
1.16 moko 202: if(self.fconnection)
203: amqp_destroy_connection(self.fconnection);
204:
1.1 moko 205: self.fconnection = conn;
206: self.fchannel = channel;
1.16 moko 207: self.fstate = VAmqp::ALIVE;
208: self.freconnect_interval = reconnect_interval_sec;
209: }
210:
1.19 moko 211: // repairs a channel-level error cheaply: reopen on the same connection. Only valid when the server has
212: // already sent (or is about to send) channel.close - we're completing that handshake with close-ok, not
213: // initiating our own.
1.16 moko 214: static void amqp_repair_channel(VAmqp& self) {
215: amqp_channel_close_ok_t close_ok;
216: amqp_send_method(self.fconnection, self.fchannel, AMQP_CHANNEL_CLOSE_OK_METHOD, &close_ok);
217: amqp_channel_open(self.fconnection, self.fchannel);
218: check(self, amqp_get_rpc_reply(self.fconnection), "channel repair ");
219: self.fstate = VAmqp::ALIVE;
220: }
221:
1.19 moko 222: // voluntarily closes and reopens an otherwise-healthy channel
223: static void amqp_reset_channel(VAmqp& self) {
224: amqp_channel_close(self.fconnection, self.fchannel, AMQP_REPLY_SUCCESS);
225: amqp_channel_open(self.fconnection, self.fchannel);
226: amqp_get_rpc_reply(self.fconnection);
227: }
228:
1.16 moko 229: void VAmqp::ensure_connected() {
230: if(fstate == ALIVE)
231: return;
232:
233: if(fstate == CHANNEL_DEAD){
234: amqp_repair_channel(*this);
235: return;
236: }
237:
238: // CONNECTION_DEAD
239: if(freconnect_interval <= 0)
240: throw Exception("amqp", 0, "connection is dead (auto_reconnect is not enabled)");
241:
242: pa_sleep(freconnect_interval, 0);
243:
244: amqp_connect(*this, pa_thread_request(), fcreate_options);
245: }
246:
247: #endif // WITH_AMQP
248:
249: static void _create(Request& r, MethodParams& params) {
250: VAmqp& self=GET_SELF(r, VAmqp);
251:
252: #ifdef WITH_AMQP
253: self.fcreate_options = params.count()>0 ? params.as_hash(0) : 0;
254: amqp_connect(self, r, self.fcreate_options);
1.1 moko 255: #else
256: (void)params; (void)self;
257: throw Exception("amqp", 0, "compiled without amqp support");
1.6 moko 258: #endif // WITH_AMQP
1.1 moko 259: }
260:
261: #ifdef WITH_AMQP
262:
1.2 moko 263: #define AMQP_STRING(s,l) new String(String::C(pa_strdup((const char*)(s), (l)), (l)))
264: #define AMQP_VSTRING(s,l) new VString(*AMQP_STRING(s,l))
265:
1.17 moko 266: // broker-defined arguments/headers (x-message-ttl, x-dead-letter-exchange, ...)
267: // Type is taken from how the value was assigned: [] -> string, () -> number, (true|false) -> bool
268: static amqp_table_t amqp_build_arguments_table(Request& r, HashStringValue* arguments) {
269: amqp_table_t table = amqp_empty_table;
270: size_t count = arguments ? arguments->count() : 0;
271: if(!count)
272: return table;
273:
274: amqp_table_entry_t* entries = (amqp_table_entry_t*)pa_malloc(count * sizeof(amqp_table_entry_t));
275: size_t i = 0;
276: for(HashStringValue::Iterator it(*arguments); it; it.next()){
277: entries[i].key = amqp_cstring_bytes(it.key().cstr());
278:
279: Value& value = r.process(*it.value());
280: if(value.is_string() || value.is_void()){
281: entries[i].value.kind = AMQP_FIELD_KIND_UTF8;
282: entries[i].value.value.bytes = amqp_cstring_bytes(value.as_string().cstr());
283: } else if(value.is_bool()){
284: entries[i].value.kind = AMQP_FIELD_KIND_BOOLEAN;
285: entries[i].value.value.boolean = value.as_bool();
286: } else {
1.18 moko 287: double d = value.as_double();
288: double rounded = round(d);
289: if(ulp_eq_double(d, rounded)){
290: entries[i].value.kind = AMQP_FIELD_KIND_I64;
291: entries[i].value.value.i64 = (int64_t)rounded;
292: } else {
293: entries[i].value.kind = AMQP_FIELD_KIND_F64;
294: entries[i].value.value.f64 = d;
295: }
1.17 moko 296: }
297: i++;
298: }
299:
300: table.num_entries = (int)count;
301: table.entries = entries;
302: return table;
303: }
304:
305: // reverse of amqp_build_arguments_table - decodes a broker-provided field table (e.g. message headers) back into a hash.
306: static VHash* amqp_table_to_hash(amqp_table_t& table);
307:
308: static Value* amqp_field_to_value(amqp_field_value_t& f) {
309: switch(f.kind){
310: case AMQP_FIELD_KIND_UTF8:
311: case AMQP_FIELD_KIND_BYTES:
312: return AMQP_VSTRING(f.value.bytes.bytes, f.value.bytes.len);
313: case AMQP_FIELD_KIND_BOOLEAN:
314: return &VBool::get(f.value.boolean);
315: case AMQP_FIELD_KIND_I8: return new VInt((pa_wint)f.value.i8);
316: case AMQP_FIELD_KIND_U8: return new VInt((pa_wint)f.value.u8);
317: case AMQP_FIELD_KIND_I16: return new VInt((pa_wint)f.value.i16);
318: case AMQP_FIELD_KIND_U16: return new VInt((pa_wint)f.value.u16);
319: case AMQP_FIELD_KIND_I32: return new VInt((pa_wint)f.value.i32);
320: case AMQP_FIELD_KIND_U32: return new VInt((pa_wint)f.value.u32);
321: case AMQP_FIELD_KIND_I64: return new VInt((pa_wint)f.value.i64);
322: case AMQP_FIELD_KIND_U64: return new VInt((pa_wint)f.value.u64);
323: case AMQP_FIELD_KIND_TIMESTAMP: return new VInt((pa_wint)f.value.u64);
324: case AMQP_FIELD_KIND_F32: return new VDouble((double)f.value.f32);
325: case AMQP_FIELD_KIND_F64: return new VDouble(f.value.f64);
326: case AMQP_FIELD_KIND_DECIMAL: {
327: double divisor=1;
328: for(uint8_t i=0; i<f.value.decimal.decimals; i++) divisor*=10;
329: return new VDouble(f.value.decimal.value/divisor);
330: }
331: case AMQP_FIELD_KIND_TABLE:
332: return amqp_table_to_hash(f.value.table);
333: case AMQP_FIELD_KIND_ARRAY: {
334: VArray* result=new VArray();
335: ArrayValue& av=result->array();
336: for(int i=0; i<f.value.array.num_entries; i++)
337: av+=amqp_field_to_value(f.value.array.entries[i]);
338: return result;
339: }
340: case AMQP_FIELD_KIND_VOID:
341: return VVoid::get();
342: default:
343: return VString::empty();
344: }
345: }
346:
347: static VHash* amqp_table_to_hash(amqp_table_t& table) {
348: VHash* result=new VHash;
349: HashStringValue* h=result->get_hash();
350: for(int i=0; i<table.num_entries; i++){
351: amqp_table_entry_t& e=table.entries[i];
352: h->put(*AMQP_STRING(e.key.bytes, e.key.len), amqp_field_to_value(e.value));
353: }
354: return result;
355: }
356:
1.1 moko 357: static void _publish(Request& r, MethodParams& params) {
358: VAmqp& self=GET_SELF(r, VAmqp);
359: const String &msg=params.as_string(0, "msg must be string");
360: const char* exchange_c = ""; // default exchange
361: const char* routing_key_c = 0;
362: bool mandatory=false;
363:
364: amqp_basic_properties_t props;
365: props._flags = 0;
366:
367: if(params.count()>1){
368: if(HashStringValue* options=params.as_hash(1)){
369: for(HashStringValue::Iterator i(*options); i; i.next()){
370: String::Body key=i.key();
371: Value* value=i.value();
372: if(key=="exchange"){
373: exchange_c=value->as_string().cstr();
374: } else if(key=="routing_key"){
375: routing_key_c=value->as_string().cstr();
376: } else if(key=="queue"){
1.3 moko 377: routing_key_c=value->as_string().cstr();
1.1 moko 378: } else if(key=="mandatory"){
379: mandatory=r.process(*value).as_bool();
1.3 moko 380: } else if(key=="content_type"){
381: const char* v=value->as_string().cstr();
382: props.content_type=amqp_cstring_bytes(v);
383: props._flags|=AMQP_BASIC_CONTENT_TYPE_FLAG;
384: } else if(key=="content_encoding"){
385: const char* v=value->as_string().cstr();
386: props.content_encoding=amqp_cstring_bytes(v);
387: props._flags|=AMQP_BASIC_CONTENT_ENCODING_FLAG;
388: } else if(key=="delivery_mode"){
389: uint8_t dm=(uint8_t)value->as_int();
390: props.delivery_mode=dm;
391: props._flags|=AMQP_BASIC_DELIVERY_MODE_FLAG;
392: } else if(key=="priority"){
393: uint8_t pr=(uint8_t)value->as_int();
394: props.priority=pr;
395: props._flags|=AMQP_BASIC_PRIORITY_FLAG;
396: } else if(key=="correlation_id"){
397: const char* v=value->as_string().cstr();
398: props.correlation_id=amqp_cstring_bytes(v);
399: props._flags|=AMQP_BASIC_CORRELATION_ID_FLAG;
400: } else if(key=="reply_to"){
401: const char* v=value->as_string().cstr();
402: props.reply_to=amqp_cstring_bytes(v);
403: props._flags|=AMQP_BASIC_REPLY_TO_FLAG;
404: } else if(key=="expiration"){
405: const char* v=value->as_string().cstr();
406: props.expiration=amqp_cstring_bytes(v);
407: props._flags|=AMQP_BASIC_EXPIRATION_FLAG;
408: } else if(key=="message_id"){
409: const char* v=value->as_string().cstr();
410: props.message_id=amqp_cstring_bytes(v);
411: props._flags|=AMQP_BASIC_MESSAGE_ID_FLAG;
412: } else if(key=="timestamp"){
413: uint64_t ts=(uint64_t)value->as_double();
414: props.timestamp=ts;
415: props._flags|=AMQP_BASIC_TIMESTAMP_FLAG;
416: } else if(key=="type"){
417: const char* v=value->as_string().cstr();
418: props.type=amqp_cstring_bytes(v);
419: props._flags|=AMQP_BASIC_TYPE_FLAG;
420: } else if(key=="user_id"){
421: const char* v=value->as_string().cstr();
422: props.user_id=amqp_cstring_bytes(v);
423: props._flags|=AMQP_BASIC_USER_ID_FLAG;
424: } else if(key=="app_id"){
425: const char* v=value->as_string().cstr();
426: props.app_id=amqp_cstring_bytes(v);
427: props._flags|=AMQP_BASIC_APP_ID_FLAG;
1.18 moko 428: } else if(key=="cluster_id"){
429: const char* v=value->as_string().cstr();
430: props.cluster_id=amqp_cstring_bytes(v);
431: props._flags|=AMQP_BASIC_CLUSTER_ID_FLAG;
1.3 moko 432: } else if(key=="headers"){
1.17 moko 433: props.headers=amqp_build_arguments_table(r, value->get_hash());
434: props._flags|=AMQP_BASIC_HEADERS_FLAG;
435: } else
1.1 moko 436: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
437: }
438: }
439: }
440:
441: if(!routing_key_c)
442: throw Exception("amqp", 0, "routing_key or queue must be specified");
443:
444: amqp_bytes_t body;
445: body.len = msg.length();
446: body.bytes=(void*)msg.cstr();
447:
1.3 moko 448: int ret = amqp_basic_publish(self.connection(), self.channel(), amqp_cstring_bytes(exchange_c), amqp_cstring_bytes(routing_key_c), mandatory, 0, &props, body);
1.1 moko 449:
1.16 moko 450: status_check(self, ret, "publish ");
1.1 moko 451: }
452:
453: static void _release(Request& r, MethodParams&) {
454: VAmqp& self=GET_SELF(r, VAmqp);
455: if(self.fconnection){
456: amqp_connection_state_t conn=self.fconnection;
457: amqp_channel_close(conn, self.fchannel, AMQP_REPLY_SUCCESS);
458: amqp_connection_close(conn, AMQP_REPLY_SUCCESS);
459: amqp_destroy_connection(conn);
460: self.fconnection=0;
461: self.fchannel=0;
1.16 moko 462: self.fstate=VAmqp::CONNECTION_DEAD;
1.1 moko 463: }
464: }
465:
1.15 moko 466: // to allow both [] and () call syntax
467: static uint64_t as_delivery_tag(MethodParams& params, int index=0) {
468: const String &tag_s=params.as_string(index, "delivery tag must not be code");
469: return pa_atoul(tag_s.cstr());
470: }
471:
1.1 moko 472: static void _ack(Request& r, MethodParams& params) {
473: VAmqp& self=GET_SELF(r, VAmqp);
1.15 moko 474: int ret = amqp_basic_ack(self.connection(), self.channel(), as_delivery_tag(params), 0);
1.16 moko 475: status_check(self, ret, "ack ");
1.1 moko 476: }
477:
478: static void _nack(Request& r, MethodParams& params) {
479: VAmqp& self=GET_SELF(r, VAmqp);
1.15 moko 480: uint64_t tag=as_delivery_tag(params);
1.1 moko 481: bool requeue=false;
482: if(params.count()>1){
483: if(HashStringValue* options=params.as_hash(1)){
484: for(HashStringValue::Iterator i(*options); i; i.next()){
485: if(i.key()=="requeue"){
486: requeue=r.process(*i.value()).as_bool();
487: } else
488: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
489: }
490: }
491: }
1.15 moko 492: int ret = amqp_basic_nack(self.connection(), self.channel(), tag, 0, requeue);
1.16 moko 493: status_check(self, ret, "nack ");
1.1 moko 494: }
495:
496: static void _qos(Request& r, MethodParams& params) {
497: VAmqp& self=GET_SELF(r, VAmqp);
498: uint16_t prefetch_count=0;
499: if(params.count()>0){
500: if(HashStringValue* options=params.as_hash(0)){
501: for(HashStringValue::Iterator i(*options); i; i.next()){
502: if(i.key()=="prefetch_count"){
503: int pc=r.process(*i.value()).as_int();
504: prefetch_count= pc<0 ? 0 : (pc>65535 ? 65535 : (uint16_t)pc);
505: } else
506: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
507: }
508: }
509: }
1.16 moko 510: amqp_basic_qos(self.connection(), self.channel(), 0, prefetch_count, 0);
511: check(self, amqp_get_rpc_reply(self.connection()), "qos ");
1.1 moko 512: }
513:
514: static void _reject(Request& r, MethodParams& params) {
515: VAmqp& self=GET_SELF(r, VAmqp);
1.15 moko 516: uint64_t tag=as_delivery_tag(params);
1.1 moko 517: bool requeue=true; // by default return to queue
518: if(params.count()>1){
519: if(HashStringValue* options = params.as_hash(1)){
520: for(HashStringValue::Iterator i(*options); i; i.next()){
521: if(i.key() == "requeue"){
522: requeue=r.process(*i.value()).as_bool();
523: } else
524: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
525: }
526: }
527: }
1.15 moko 528: int ret = amqp_basic_reject(self.connection(), self.channel(), tag, requeue);
1.16 moko 529: status_check(self, ret, "reject ");
1.1 moko 530: }
531:
1.8 moko 532: static void _declare(Request& r, MethodParams& params) {
1.1 moko 533: VAmqp& self=GET_SELF(r, VAmqp);
1.8 moko 534: const char* exchange_c = 0;
535: const char* queue_c = 0;
1.1 moko 536: const char* type_c = "direct";
1.12 moko 537: bool passive=false, durable=false, auto_delete=false, internal=false, exclusive=false;
1.17 moko 538: amqp_table_t arguments=amqp_empty_table;
1.8 moko 539: if(HashStringValue* options=params.as_hash(0)){
540: for(HashStringValue::Iterator i(*options); i; i.next()){
541: String::Body key=i.key();
542: Value* value=i.value();
543: if(key=="exchange"){
544: exchange_c=value->as_string().cstr();
545: } else if(key=="queue"){
546: queue_c=value->as_string().cstr();
547: } else if(key=="type"){
548: type_c=value->as_string().cstr();
549: } else if(key=="passive"){
550: passive=r.process(*value).as_bool();
551: } else if(key=="durable"){
552: durable=r.process(*value).as_bool();
553: } else if(key=="auto_delete"){
554: auto_delete=r.process(*value).as_bool();
1.11 moko 555: } else if(key=="internal"){
556: internal=r.process(*value).as_bool();
557: } else if(key=="exclusive"){
558: exclusive=r.process(*value).as_bool();
1.17 moko 559: } else if(key=="arguments"){
560: arguments=amqp_build_arguments_table(r, value->get_hash());
1.8 moko 561: } else
562: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.1 moko 563: }
564: }
1.8 moko 565: if(!exchange_c && !queue_c)
566: throw Exception("amqp", 0, "exchange or queue must be specified");
567:
568: if(exchange_c){
1.17 moko 569: amqp_exchange_declare(self.connection(), self.channel(), amqp_cstring_bytes(exchange_c), amqp_cstring_bytes(type_c), passive, durable, auto_delete, internal, arguments);
1.16 moko 570: check(self, amqp_get_rpc_reply(self.connection()));
1.8 moko 571: }
1.1 moko 572:
1.8 moko 573: if(queue_c){
1.17 moko 574: amqp_queue_declare_ok_t *ok = amqp_queue_declare(self.connection(), self.channel(), *queue_c ? amqp_cstring_bytes(queue_c) : amqp_empty_bytes, passive, durable, exclusive, auto_delete, arguments);
1.16 moko 575: check(self, amqp_get_rpc_reply(self.connection()));
1.8 moko 576: if(!*queue_c && ok){
577: r.write(*AMQP_STRING(ok->queue.bytes, ok->queue.len));
1.1 moko 578: }
579: }
580: }
581:
1.8 moko 582: static void _delete(Request& r, MethodParams& params) {
1.1 moko 583: VAmqp& self=GET_SELF(r, VAmqp);
1.8 moko 584: const char* exchange_c = 0;
585: const char* queue_c = 0;
1.11 moko 586: bool if_unused=false, if_empty=false;
1.8 moko 587: if(HashStringValue* options=params.as_hash(0)){
588: for(HashStringValue::Iterator i(*options); i; i.next()){
589: String::Body key=i.key();
590: Value* value=i.value();
591: if(key=="exchange"){
592: exchange_c=value->as_string().cstr();
593: } else if(key=="queue"){
594: queue_c=value->as_string().cstr();
595: } else if(key=="if_unused"){
596: if_unused=r.process(*value).as_bool();
597: } else if(key=="if_empty"){
598: if_empty=r.process(*value).as_bool();
599: } else
600: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.1 moko 601: }
602: }
1.8 moko 603: if(!exchange_c && !queue_c)
604: throw Exception("amqp", 0, "exchange or queue must be specified");
605:
606: if(exchange_c){
607: amqp_exchange_delete(self.connection(), self.channel(), amqp_cstring_bytes(exchange_c), if_unused);
1.16 moko 608: check(self, amqp_get_rpc_reply(self.connection()));
1.1 moko 609: }
610:
1.8 moko 611: if(queue_c){
612: amqp_queue_delete(self.connection(), self.channel(), amqp_cstring_bytes(queue_c), if_unused, if_empty);
1.16 moko 613: check(self, amqp_get_rpc_reply(self.connection()));
1.1 moko 614: }
615: }
616:
1.8 moko 617: static void _bind(Request& r, MethodParams& params) {
1.1 moko 618: VAmqp& self=GET_SELF(r, VAmqp);
619: const char* exchange_c=0;
620: const char* queue_c=0;
621: const char* routing_key_c="";
1.8 moko 622: if(HashStringValue* options=params.as_hash(0)){
623: for(HashStringValue::Iterator i(*options); i; i.next()){
624: String::Body key=i.key();
625: Value* value=i.value();
626: if(key=="exchange"){
627: exchange_c=value->as_string().cstr();
628: } else if(key=="queue"){
629: queue_c=value->as_string().cstr();
630: } else if(key=="routing_key"){
631: routing_key_c=value->as_string().cstr();
632: } else
633: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.1 moko 634: }
635: }
636: if(!exchange_c || !queue_c) throw Exception("amqp", 0, "exchange and queue are required");
637: amqp_queue_bind(self.connection(), self.channel(), amqp_cstring_bytes(queue_c), amqp_cstring_bytes(exchange_c), amqp_cstring_bytes(routing_key_c), amqp_empty_table);
1.16 moko 638: check(self, amqp_get_rpc_reply(self.connection()));
1.1 moko 639: }
640:
1.8 moko 641: static void _unbind(Request& r, MethodParams& params) {
1.1 moko 642: VAmqp& self=GET_SELF(r, VAmqp);
643: const char* exchange_c=0;
644: const char* queue_c=0;
645: const char* routing_key_c="";
1.8 moko 646: if(HashStringValue* options=params.as_hash(0)){
647: for(HashStringValue::Iterator i(*options); i; i.next()){
648: String::Body key=i.key();
649: Value* value=i.value();
650: if(key=="exchange"){
651: exchange_c=value->as_string().cstr();
652: } else if(key=="queue"){
653: queue_c=value->as_string().cstr();
654: } else if(key=="routing_key"){
655: routing_key_c=value->as_string().cstr();
656: } else
657: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.1 moko 658: }
659: }
660: if(!exchange_c || !queue_c) throw Exception("amqp", 0, "exchange and queue are required");
661: amqp_queue_unbind(self.connection(), self.channel(), amqp_cstring_bytes(queue_c), amqp_cstring_bytes(exchange_c), amqp_cstring_bytes(routing_key_c), amqp_empty_table);
1.16 moko 662: check(self, amqp_get_rpc_reply(self.connection()));
1.1 moko 663: }
664:
1.8 moko 665: static void _purge(Request& r, MethodParams& params) {
666: VAmqp& self=GET_SELF(r, VAmqp);
667: const char* queue_c = 0;
668: if(HashStringValue* options=params.as_hash(0)){
669: for(HashStringValue::Iterator i(*options); i; i.next()){
670: String::Body key=i.key();
671: Value* value=i.value();
672: if(key=="queue"){
673: queue_c=value->as_string().cstr();
674: } else
675: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
676: }
677: }
678: if(!queue_c)
679: throw Exception("amqp", 0, "queue must be specified");
680:
1.9 moko 681: amqp_queue_purge_ok_t *ok = amqp_queue_purge(self.connection(), self.channel(), amqp_cstring_bytes(queue_c));
1.16 moko 682: check(self, amqp_get_rpc_reply(self.connection()));
1.9 moko 683: r.write(*new VInt(ok ? ok->message_count : 0));
1.8 moko 684: }
685:
686: static void _info(Request& r, MethodParams& params) {
687: VAmqp& self = GET_SELF(r, VAmqp);
688: const char* queue_c = 0;
689:
690: if (HashStringValue* options=params.as_hash(0)) {
691: for (HashStringValue::Iterator i(*options); i; i.next()) {
692: String::Body key=i.key();
693: Value* value=i.value();
694: if(key=="queue"){
695: queue_c=value->as_string().cstr();
696: } else {
697: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
698: }
699: }
700: }
701:
702: if (!queue_c)
703: throw Exception("amqp", 0, "queue must be specified");
704:
705: amqp_queue_declare_ok_t* ok = amqp_queue_declare(self.connection(), self.channel(), amqp_cstring_bytes(queue_c), /*passive*/ 1, 0, 0, 0, amqp_empty_table);
1.16 moko 706: check(self, amqp_get_rpc_reply(self.connection()));
1.8 moko 707:
708: Value& result=*new VHash;
1.9 moko 709: if(ok){
710: result.put_element(*new String("queue"), AMQP_VSTRING(ok->queue.bytes, ok->queue.len));
711: result.put_element(*new String("messages"), new VInt(ok->message_count));
712: result.put_element(*new String("consumers"), new VInt(ok->consumer_count));
713: }
1.8 moko 714: r.write(result);
715: }
716:
717: static VHash *amqp_message_hash(amqp_envelope_t &envelope) {
718: VHash *result=new VHash;
719: HashStringValue* h=result->get_hash();
720: h->put("msg", AMQP_VSTRING(envelope.message.body.bytes, envelope.message.body.len));
721: h->put("delivery_tag", new VInt(envelope.delivery_tag));
722: h->put("consumer_tag", AMQP_VSTRING(envelope.consumer_tag.bytes, envelope.consumer_tag.len));
723: h->put("exchange", AMQP_VSTRING(envelope.exchange.bytes, envelope.exchange.len));
1.17 moko 724: h->put("routing_key", AMQP_VSTRING(envelope.routing_key.bytes, envelope.routing_key.len));
725: h->put("redelivered", &VBool::get(envelope.redelivered));
726:
727: // properties are only put when the publisher actually set them (per the wire's own _flags bitmask) -
728: // same handful of allocations as the fields above, just conditional on what's actually present
729: amqp_basic_properties_t& props=envelope.message.properties;
730: if(props._flags & AMQP_BASIC_CONTENT_TYPE_FLAG)
731: h->put("content_type", AMQP_VSTRING(props.content_type.bytes, props.content_type.len));
732: if(props._flags & AMQP_BASIC_CONTENT_ENCODING_FLAG)
733: h->put("content_encoding", AMQP_VSTRING(props.content_encoding.bytes, props.content_encoding.len));
734: if(props._flags & AMQP_BASIC_HEADERS_FLAG)
735: h->put("headers", amqp_table_to_hash(props.headers));
736: if(props._flags & AMQP_BASIC_DELIVERY_MODE_FLAG)
737: h->put("delivery_mode", new VInt(props.delivery_mode));
738: if(props._flags & AMQP_BASIC_PRIORITY_FLAG)
739: h->put("priority", new VInt(props.priority));
740: if(props._flags & AMQP_BASIC_CORRELATION_ID_FLAG)
741: h->put("correlation_id", AMQP_VSTRING(props.correlation_id.bytes, props.correlation_id.len));
742: if(props._flags & AMQP_BASIC_REPLY_TO_FLAG)
743: h->put("reply_to", AMQP_VSTRING(props.reply_to.bytes, props.reply_to.len));
744: if(props._flags & AMQP_BASIC_EXPIRATION_FLAG)
745: h->put("expiration", AMQP_VSTRING(props.expiration.bytes, props.expiration.len));
746: if(props._flags & AMQP_BASIC_MESSAGE_ID_FLAG)
747: h->put("message_id", AMQP_VSTRING(props.message_id.bytes, props.message_id.len));
748: if(props._flags & AMQP_BASIC_TIMESTAMP_FLAG)
749: h->put("timestamp", new VInt((pa_wint)props.timestamp));
750: if(props._flags & AMQP_BASIC_TYPE_FLAG)
751: h->put("type", AMQP_VSTRING(props.type.bytes, props.type.len));
752: if(props._flags & AMQP_BASIC_USER_ID_FLAG)
753: h->put("user_id", AMQP_VSTRING(props.user_id.bytes, props.user_id.len));
754: if(props._flags & AMQP_BASIC_APP_ID_FLAG)
755: h->put("app_id", AMQP_VSTRING(props.app_id.bytes, props.app_id.len));
756: if(props._flags & AMQP_BASIC_CLUSTER_ID_FLAG)
757: h->put("cluster_id", AMQP_VSTRING(props.cluster_id.bytes, props.cluster_id.len));
758:
1.8 moko 759: return result;
760: }
761:
1.14 moko 762: // timeout<0 - wait forever (NULL), timeout==0 - don't wait (poll), timeout>0 - wait up to timeout seconds
763: static struct timeval* amqp_wait_tv(struct timeval& tv, int timeout){
764: if(timeout<0)
765: return NULL;
766: tv.tv_sec=timeout;
767: tv.tv_usec=0;
768: return &tv;
769: }
770:
1.17 moko 771: // amqp_consume_message() returns AMQP_STATUS_UNEXPECTED_STATE when it read a frame other than a deliver while polling.
772: // Per its own documented contract, read that pending frame to find out what it actually was:
773: // - a basic.return for an earlier mandatory publish that found no route: benign, doesn't close anything;
774: // drain the returned message (header+body, still pending right behind it) and retry - the real
775: // message (if any) is still coming
776: // - anything else: a genuine channel/connection close (typically after a protocol violation) - build a
777: // reply so check() can classify it correctly (cheap channel repair vs full reconnect)
778: static amqp_rpc_reply_t amqp_consume_message_checked(amqp_connection_state_t conn, int channel, amqp_envelope_t* envelope, struct timeval* tv) {
779: for(;;) {
780: amqp_rpc_reply_t res = amqp_consume_message(conn, envelope, tv, 0);
781: if(res.reply_type != AMQP_RESPONSE_LIBRARY_EXCEPTION || res.library_error != AMQP_STATUS_UNEXPECTED_STATE)
782: return res;
783:
784: amqp_frame_t frame;
785: if(amqp_simple_wait_frame(conn, &frame) != AMQP_STATUS_OK || frame.frame_type != AMQP_FRAME_METHOD)
786: return res; // give up, let the original UNEXPECTED_STATE be treated as fatal
787:
788: if(frame.payload.method.id == AMQP_BASIC_RETURN_METHOD) {
789: amqp_message_t message;
790: if(amqp_read_message(conn, channel, &message, 0).reply_type == AMQP_RESPONSE_NORMAL)
791: amqp_destroy_message(&message);
792: continue;
793: }
794:
795: res.reply_type = AMQP_RESPONSE_SERVER_EXCEPTION;
796: res.reply.id = frame.payload.method.id;
797: res.reply.decoded = frame.payload.method.decoded;
798: return res;
799: }
1.16 moko 800: }
801:
1.18 moko 802: // Auto-object used for cancelling the consumer when the enclosing scope exits. A cancel failure here must
803: // never mask whatever error is already propagating, so its result is discarded rather than check()ed.
804: class Temp_amqp_consumer {
805: public:
1.19 moko 806: Temp_amqp_consumer(VAmqp& aself, const char* aconsumer_tag, bool adrain): self(aself), consumer_tag(aconsumer_tag), drain(adrain) {}
1.18 moko 807: ~Temp_amqp_consumer() {
808: if(!consumer_tag || self.fstate != VAmqp::ALIVE) return;
809: amqp_basic_cancel(self.fconnection, self.fchannel, amqp_cstring_bytes(consumer_tag));
810: amqp_get_rpc_reply(self.fconnection);
1.19 moko 811: if(drain){
812: // The broker may have already sent a deliver frame for this (now cancelled) consumer before it even saw our cancel,
813: // so it can still be sitting in the library's own buffer. Its delivery tag belongs to the pre-reset channel and
814: // won't exist anymore afterward, so drain anything already in flight - otherwise it would surface later, misattributed.
815: amqp_envelope_t envelope;
816: struct timeval no_wait = {0,0};
817: while(amqp_consume_message(self.fconnection, &envelope, &no_wait, 0).reply_type == AMQP_RESPONSE_NORMAL)
818: amqp_destroy_envelope(&envelope);
819: amqp_reset_channel(self);
820: }
1.18 moko 821: }
822: private:
823: VAmqp& self;
824: const char* consumer_tag;
1.19 moko 825: bool drain;
1.18 moko 826: };
827:
1.1 moko 828: static void _consume(Request& r, MethodParams& params) {
829: VAmqp& self=GET_SELF(r, VAmqp);
830: const char* queue_c=0;
831: const char* consumer_tag_c=0;
1.17 moko 832: bool ack=true, exclusive=false;
1.14 moko 833: int count=1; bool count_specified=false;
834: int timeout=0; bool timeout_specified=false;
1.1 moko 835: Junction* callback=0;
836:
1.2 moko 837: if(HashStringValue* options=params.as_hash(0)){
838: for(HashStringValue::Iterator i(*options); i; i.next()){
839: String::Body key=i.key();
840: Value* value=i.value();
1.3 moko 841: if(key=="callback"){
842: callback=value->get_junction();
843: } else if(key=="queue"){
1.2 moko 844: queue_c=value->as_string().cstr();
845: } else if(key=="consumer_tag"){
846: consumer_tag_c=value->as_string().cstr();
1.17 moko 847: } else if(key=="ack"){
848: ack=r.process(*value).as_bool();
1.10 moko 849: } else if(key=="exclusive"){
850: exclusive=r.process(*value).as_bool();
1.8 moko 851: } else if(key=="count"){
852: count=r.process(*value).as_int();
1.14 moko 853: count_specified=true;
854: } else if(key=="timeout"){
855: timeout=r.process(*value).as_int();
856: timeout_specified=true;
1.2 moko 857: } else
858: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.1 moko 859: }
860: }
861:
1.8 moko 862: if(!queue_c) throw Exception("amqp", 0, "queue must be specified");
1.14 moko 863: if(count==0) throw Exception("amqp", 0, "count must not be zero");
864:
865: // listen mode (callback): count/timeout unlimited by default - runs until stop_consume/timeout/error
866: // pull mode (no callback): count(1)/timeout(0) by default - returns whatever is ready right now
867: if(!count_specified)
868: count = callback ? -1 : 1;
869: if(!timeout_specified)
870: timeout = callback ? -1 : 0;
1.1 moko 871:
1.9 moko 872: amqp_basic_consume_ok_t *ok = amqp_basic_consume(self.connection(), self.channel(), amqp_cstring_bytes(queue_c),
1.1 moko 873: consumer_tag_c ? amqp_cstring_bytes(consumer_tag_c) : amqp_empty_bytes,
1.17 moko 874: 0 /*no_local*/, !ack, exclusive, amqp_empty_table);
1.16 moko 875: check(self, amqp_get_rpc_reply(self.connection()));
1.1 moko 876:
1.15 moko 877: // amqp_maybe_release_buffers() recycles ok->consumer_tag
878: const char* consumer_tag_copy = ok ? pa_strdup((const char*)ok->consumer_tag.bytes, ok->consumer_tag.len) : 0;
1.19 moko 879: Temp_amqp_consumer cancel_consumer(self, consumer_tag_copy, ack && callback);
1.15 moko 880:
1.14 moko 881: struct timeval tv;
882:
1.8 moko 883: if(callback){
884: self.fstop=false;
1.14 moko 885: for(int received=0; !self.fstop && (count<0 || received<count); received++){
1.8 moko 886: amqp_envelope_t envelope;
887: memset(&envelope, 0, sizeof(envelope));
888: amqp_maybe_release_buffers(self.connection());
1.14 moko 889: // timeout is the max idle gap between messages, re-armed on every wait
1.17 moko 890: amqp_rpc_reply_t res = amqp_consume_message_checked(self.connection(), self.channel(), &envelope, amqp_wait_tv(tv, timeout));
1.8 moko 891: if(res.reply_type == AMQP_RESPONSE_NORMAL){
892: VHash *vh=amqp_message_hash(envelope);
893: Value *params_cb[]={vh};
894: METHOD_FRAME_ACTION(*callback->method, r.method_frame, callback->self, {
895: frame.store_params(params_cb, 1);
896: r.call(frame);
897: });
898: amqp_destroy_envelope(&envelope);
899: } else if(res.reply_type == AMQP_RESPONSE_LIBRARY_EXCEPTION && res.library_error == AMQP_STATUS_TIMEOUT) {
1.14 moko 900: break; // idle too long - stop cleanly
1.8 moko 901: } else {
1.17 moko 902: check(self, res, "consume ");
1.8 moko 903: }
904: }
905: } else {
906: VArray& result=*new VArray();
907: ArrayValue& result_array=result.array();
908:
1.14 moko 909: for(int received=0; count<0 || received<count; received++){
1.8 moko 910: amqp_envelope_t envelope;
911: memset(&envelope, 0, sizeof(envelope));
912: amqp_maybe_release_buffers(self.connection());
1.14 moko 913: // timeout applies only to the first message of the batch;
914: // the rest is drained with a non-blocking poll until nothing more is ready
1.17 moko 915: amqp_rpc_reply_t res = amqp_consume_message_checked(self.connection(), self.channel(), &envelope, amqp_wait_tv(tv, received==0 ? timeout : 0));
1.8 moko 916: if(res.reply_type == AMQP_RESPONSE_NORMAL){
917: result_array+=amqp_message_hash(envelope);
918: amqp_destroy_envelope(&envelope);
1.14 moko 919: } else if(res.reply_type == AMQP_RESPONSE_LIBRARY_EXCEPTION && res.library_error == AMQP_STATUS_TIMEOUT) {
920: break; // nothing (more) ready - return what we have
1.8 moko 921: } else {
1.17 moko 922: check(self, res, "consume ");
1.8 moko 923: }
1.1 moko 924: }
1.8 moko 925: r.write(result);
1.1 moko 926: }
927: }
928:
929: static void _stop_consume(Request& r, MethodParams&) {
930: VAmqp& self=GET_SELF(r, VAmqp);
931: self.fstop=true;
932: }
933:
1.6 moko 934: #endif // WITH_AMQP
1.1 moko 935:
936: // constructor
937: MAmqp::MAmqp(): Methoded("amqp") {
938: add_native_method("create", Method::CT_DYNAMIC, _create, 0, 1);
939: #ifdef WITH_AMQP
940: add_native_method("publish", Method::CT_DYNAMIC, _publish, 1, 2);
941: add_native_method("release", Method::CT_DYNAMIC, _release, 0, 0);
942: add_native_method("ack", Method::CT_DYNAMIC, _ack, 1, 1);
943: add_native_method("nack", Method::CT_DYNAMIC, _nack, 1, 2);
944: add_native_method("reject", Method::CT_DYNAMIC, _reject, 1, 2);
945: add_native_method("qos", Method::CT_DYNAMIC, _qos, 0, 1);
1.8 moko 946: add_native_method("declare", Method::CT_DYNAMIC, _declare, 1, 1);
947: add_native_method("delete", Method::CT_DYNAMIC, _delete, 1, 1);
948: add_native_method("bind", Method::CT_DYNAMIC, _bind, 1, 1);
949: add_native_method("unbind", Method::CT_DYNAMIC, _unbind, 1, 1);
950: add_native_method("purge", Method::CT_DYNAMIC, _purge, 1, 1);
951: add_native_method("info", Method::CT_DYNAMIC, _info, 1, 1);
1.2 moko 952: add_native_method("consume", Method::CT_DYNAMIC, _consume, 1, 1);
1.1 moko 953: add_native_method("stop_consume", Method::CT_DYNAMIC, _stop_consume, 0, 0);
1.6 moko 954: #endif // WITH_AMQP
1.1 moko 955: }
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