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