Annotation of parser3/src/classes/amqp.C, revision 1.30
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:
1.25 moko 8:
9: #include "classes.h"
1.1 moko 10: #include "pa_vmethod_frame.h"
11:
1.25 moko 12: #include "pa_vamqp.h"
1.1 moko 13: #include "pa_request.h"
1.8 moko 14: #include "pa_varray.h"
1.1 moko 15: #include "pa_vbool.h"
1.16 moko 16: #include "pa_os.h"
1.1 moko 17:
1.30 ! moko 18: volatile const char * IDENT_AMQP_C="$Id: amqp.C,v 1.29 2026/10/09 22:05:41 moko Exp $" IDENT_PA_VAMQP_H;
1.1 moko 19:
20: class MAmqp: public Methoded {
21: public: // VStateless_class
1.28 moko 22: Value* create_new_value(Pool& apool) { return new VAmqp(apool); }
1.1 moko 23: public:
24: MAmqp();
25: };
26:
27: DECLARE_CLASS_VAR(amqp, new MAmqp);
28:
1.6 moko 29: #ifdef WITH_AMQP
30:
1.16 moko 31: static void status_check(VAmqp& self, int ret, const char *detail=""){
1.6 moko 32: if(ret == AMQP_STATUS_OK)
33: return;
34:
1.16 moko 35: self.fstate = VAmqp::CONNECTION_DEAD;
36:
1.6 moko 37: const char* error_str = amqp_error_string2(ret);
38: if(error_str) {
39: throw Exception("amqp", 0, "%sfailed: %s", detail, error_str);
40: } else {
41: throw Exception("amqp", 0, "%sfailed: error %d", detail, ret);
42: }
43: }
44:
1.16 moko 45: static void check(VAmqp& self, amqp_rpc_reply_t rr, const char *detail=""){
1.6 moko 46: if(rr.reply_type == AMQP_RESPONSE_NORMAL)
47: return;
48:
1.16 moko 49: self.fstate = (rr.reply_type == AMQP_RESPONSE_SERVER_EXCEPTION && rr.reply.id == AMQP_CHANNEL_CLOSE_METHOD) ? VAmqp::CHANNEL_DEAD : VAmqp::CONNECTION_DEAD;
50:
1.6 moko 51: // Extract error message from reply
52: const char* error_msg = 0;
53: size_t error_len = 0;
54: if(rr.reply_type == AMQP_RESPONSE_SERVER_EXCEPTION) {
55: if(rr.reply.id == AMQP_CHANNEL_CLOSE_METHOD) {
56: amqp_channel_close_t *m = (amqp_channel_close_t *)rr.reply.decoded;
57: if(m->reply_text.len > 0 && m->reply_text.bytes) {
58: error_msg = (const char*)m->reply_text.bytes;
59: error_len = m->reply_text.len;
60: }
61: } else if(rr.reply.id == AMQP_CONNECTION_CLOSE_METHOD) {
62: amqp_connection_close_t *m = (amqp_connection_close_t *)rr.reply.decoded;
63: if(m->reply_text.len > 0 && m->reply_text.bytes) {
64: error_msg = (const char*)m->reply_text.bytes;
65: error_len = m->reply_text.len;
66: }
67: }
68: }
1.16 moko 69:
1.6 moko 70: if(error_msg) {
71: throw Exception("amqp", 0, "%sfailed: %.*s", detail, (int)error_len, error_msg);
72: } else if(rr.reply_type == AMQP_RESPONSE_LIBRARY_EXCEPTION) {
1.16 moko 73: status_check(self, rr.library_error, detail);
1.6 moko 74: }
75:
76: throw Exception("amqp", 0, "%sfailed", detail);
77: }
78:
1.29 moko 79: // destroys the new connection if connecting fails
80: class Temp_amqp_connection {
81: amqp_connection_state_t fconnection;
82: public:
83: Temp_amqp_connection(amqp_connection_state_t aconnection): fconnection(aconnection) {}
84: ~Temp_amqp_connection() { if(fconnection) amqp_destroy_connection(fconnection); }
85: amqp_connection_state_t release() { amqp_connection_state_t result=fconnection; fconnection=0; return result; }
86: };
87:
1.16 moko 88: static void amqp_connect(VAmqp& self, Request& r, HashStringValue* options) {
1.1 moko 89: const char* host_c = "localhost";
90: int port = 5672;
91: const char* user_c = "guest";
92: const char* pass_c = "guest";
93: const char* vhost_c = "/";
94: const char* locale_c = "en_US";
1.22 moko 95: int heartbeat_sec = 30;
96: int reconnect_interval_sec = 0;
97: bool tls_specified = false;
1.26 moko 98: #ifdef WITH_AMQP_SSL
1.5 moko 99: const char* tls_ca = 0;
100: const char* tls_cert = 0;
101: const char* tls_key = 0;
102: bool tls_verify = true;
1.22 moko 103: #endif
1.1 moko 104:
1.16 moko 105: if(options){
106: for(HashStringValue::Iterator i(*options); i; i.next()){
107: String::Body key=i.key();
108: Value* value=i.value();
109: if(key=="host"){
110: host_c=value->as_string().cstr();
111: } else if(key=="port"){
112: port=r.process(*value).as_int();
113: } else if(key=="user"){
114: user_c=value->as_string().cstr();
115: } else if(key=="password"){
116: pass_c=value->as_string().cstr();
117: } else if(key=="vhost"){
118: vhost_c=value->as_string().cstr();
119: } else if(key=="locale"){
120: locale_c=value->as_string().cstr();
121: } else if(key=="heartbeat"){
1.22 moko 122: heartbeat_sec=r.process(*value).as_int();
1.16 moko 123: } else if(key=="auto_reconnect"){
124: reconnect_interval_sec=r.process(*value).as_int();
125: } else if(key=="tls"){
1.26 moko 126: #ifdef WITH_AMQP_SSL
1.16 moko 127: tls_specified = true;
128: if(HashStringValue* tls_options=value->get_hash()){
129: for(HashStringValue::Iterator t(*tls_options); t; t.next()){
130: String::Body tkey=t.key();
131: Value* tval=t.value();
132: if(tkey=="ca"){
133: tls_ca=tval->as_string().cstr();
134: } else if(tkey=="cert"){
135: tls_cert=tval->as_string().cstr();
136: } else if(tkey=="key"){
137: tls_key=tval->as_string().cstr();
138: } else if(tkey=="verify"){
139: tls_verify=r.process(*tval).as_bool();
140: } else
141: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.5 moko 142: }
1.16 moko 143: }
1.22 moko 144: #else
145: throw Exception("amqp", 0, "AMQP SSL support is disabled");
146: #endif
1.16 moko 147: } else
148: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.1 moko 149: }
150: }
151:
152: amqp_connection_state_t conn = amqp_new_connection();
1.29 moko 153: Temp_amqp_connection temp_connection(conn);
1.5 moko 154: amqp_socket_t* socket = 0;
1.16 moko 155:
1.26 moko 156: #ifdef WITH_AMQP_SSL
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);
1.22 moko 179: } else
180: #endif
181: {
1.5 moko 182: socket = amqp_tcp_socket_new(conn);
183: if(!socket)
184: throw Exception("amqp", 0, "failed to create TCP socket");
185: }
1.16 moko 186:
187: status_check(self, amqp_socket_open(socket, host_c, port), tls_specified ? "open SSL socket " : "open TCP socket ");
1.1 moko 188:
1.22 moko 189: amqp_rpc_reply_t rlogin = amqp_login(conn, vhost_c, 0, 131072, heartbeat_sec, AMQP_SASL_METHOD_PLAIN, user_c, pass_c);
1.29 moko 190: if(rlogin.reply_type != AMQP_RESPONSE_NORMAL)
1.16 moko 191: check(self, rlogin, "login ");
1.1 moko 192:
1.23 moko 193: amqp_channel_t channel = 1;
1.1 moko 194: amqp_channel_open(conn, channel);
195: amqp_rpc_reply_t ropen = amqp_get_rpc_reply(conn);
1.30 ! moko 196: if(ropen.reply_type != AMQP_RESPONSE_NORMAL) // no amqp_connection_close: its reply could overwrite the error text in ropen
1.16 moko 197: check(self, ropen, "open channel ");
1.1 moko 198:
1.16 moko 199: if(self.fconnection)
200: amqp_destroy_connection(self.fconnection);
201:
1.29 moko 202: self.fconnection = temp_connection.release();
1.1 moko 203: self.fchannel = channel;
1.16 moko 204: self.fstate = VAmqp::ALIVE;
205: self.freconnect_interval = reconnect_interval_sec;
206: }
207:
1.19 moko 208: // repairs a channel-level error cheaply: reopen on the same connection. Only valid when the server has
209: // already sent (or is about to send) channel.close - we're completing that handshake with close-ok, not
210: // initiating our own.
1.16 moko 211: static void amqp_repair_channel(VAmqp& self) {
212: amqp_channel_close_ok_t close_ok;
213: amqp_send_method(self.fconnection, self.fchannel, AMQP_CHANNEL_CLOSE_OK_METHOD, &close_ok);
214: amqp_channel_open(self.fconnection, self.fchannel);
215: check(self, amqp_get_rpc_reply(self.fconnection), "channel repair ");
216: self.fstate = VAmqp::ALIVE;
217: }
218:
1.19 moko 219: // voluntarily closes and reopens an otherwise-healthy channel
220: static void amqp_reset_channel(VAmqp& self) {
221: amqp_channel_close(self.fconnection, self.fchannel, AMQP_REPLY_SUCCESS);
222: amqp_channel_open(self.fconnection, self.fchannel);
223: amqp_get_rpc_reply(self.fconnection);
224: }
225:
1.16 moko 226: void VAmqp::ensure_connected() {
227: if(fstate == ALIVE)
228: return;
229:
230: if(fstate == CHANNEL_DEAD){
231: amqp_repair_channel(*this);
232: return;
233: }
234:
235: // CONNECTION_DEAD
236: if(freconnect_interval <= 0)
237: throw Exception("amqp", 0, "connection is dead (auto_reconnect is not enabled)");
238:
239: pa_sleep(freconnect_interval, 0);
240:
241: amqp_connect(*this, pa_thread_request(), fcreate_options);
242: }
243:
244: #endif // WITH_AMQP
245:
246: static void _create(Request& r, MethodParams& params) {
247: VAmqp& self=GET_SELF(r, VAmqp);
248:
249: #ifdef WITH_AMQP
250: self.fcreate_options = params.count()>0 ? params.as_hash(0) : 0;
251: amqp_connect(self, r, self.fcreate_options);
1.1 moko 252: #else
253: (void)params; (void)self;
254: throw Exception("amqp", 0, "compiled without amqp support");
1.6 moko 255: #endif // WITH_AMQP
1.1 moko 256: }
257:
258: #ifdef WITH_AMQP
259:
1.2 moko 260: #define AMQP_STRING(s,l) new String(String::C(pa_strdup((const char*)(s), (l)), (l)))
261: #define AMQP_VSTRING(s,l) new VString(*AMQP_STRING(s,l))
262:
1.17 moko 263: // broker-defined arguments/headers (x-message-ttl, x-dead-letter-exchange, ...)
264: // Type is taken from how the value was assigned: [] -> string, () -> number, (true|false) -> bool
265: static amqp_table_t amqp_build_arguments_table(Request& r, HashStringValue* arguments) {
266: amqp_table_t table = amqp_empty_table;
267: size_t count = arguments ? arguments->count() : 0;
268: if(!count)
269: return table;
270:
271: amqp_table_entry_t* entries = (amqp_table_entry_t*)pa_malloc(count * sizeof(amqp_table_entry_t));
272: size_t i = 0;
273: for(HashStringValue::Iterator it(*arguments); it; it.next()){
274: entries[i].key = amqp_cstring_bytes(it.key().cstr());
275:
276: Value& value = r.process(*it.value());
277: if(value.is_string() || value.is_void()){
278: entries[i].value.kind = AMQP_FIELD_KIND_UTF8;
279: entries[i].value.value.bytes = amqp_cstring_bytes(value.as_string().cstr());
280: } else if(value.is_bool()){
281: entries[i].value.kind = AMQP_FIELD_KIND_BOOLEAN;
282: entries[i].value.value.boolean = value.as_bool();
283: } else {
1.18 moko 284: double d = value.as_double();
285: double rounded = round(d);
286: if(ulp_eq_double(d, rounded)){
287: entries[i].value.kind = AMQP_FIELD_KIND_I64;
288: entries[i].value.value.i64 = (int64_t)rounded;
289: } else {
290: entries[i].value.kind = AMQP_FIELD_KIND_F64;
291: entries[i].value.value.f64 = d;
292: }
1.17 moko 293: }
294: i++;
295: }
296:
297: table.num_entries = (int)count;
298: table.entries = entries;
299: return table;
300: }
301:
302: // reverse of amqp_build_arguments_table - decodes a broker-provided field table (e.g. message headers) back into a hash.
303: static VHash* amqp_table_to_hash(amqp_table_t& table);
304:
305: static Value* amqp_field_to_value(amqp_field_value_t& f) {
306: switch(f.kind){
307: case AMQP_FIELD_KIND_UTF8:
308: case AMQP_FIELD_KIND_BYTES:
309: return AMQP_VSTRING(f.value.bytes.bytes, f.value.bytes.len);
310: case AMQP_FIELD_KIND_BOOLEAN:
311: return &VBool::get(f.value.boolean);
312: case AMQP_FIELD_KIND_I8: return new VInt((pa_wint)f.value.i8);
313: case AMQP_FIELD_KIND_U8: return new VInt((pa_wint)f.value.u8);
314: case AMQP_FIELD_KIND_I16: return new VInt((pa_wint)f.value.i16);
315: case AMQP_FIELD_KIND_U16: return new VInt((pa_wint)f.value.u16);
316: case AMQP_FIELD_KIND_I32: return new VInt((pa_wint)f.value.i32);
317: case AMQP_FIELD_KIND_U32: return new VInt((pa_wint)f.value.u32);
318: case AMQP_FIELD_KIND_I64: return new VInt((pa_wint)f.value.i64);
319: case AMQP_FIELD_KIND_U64: return new VInt((pa_wint)f.value.u64);
320: case AMQP_FIELD_KIND_TIMESTAMP: return new VInt((pa_wint)f.value.u64);
321: case AMQP_FIELD_KIND_F32: return new VDouble((double)f.value.f32);
322: case AMQP_FIELD_KIND_F64: return new VDouble(f.value.f64);
323: case AMQP_FIELD_KIND_DECIMAL: {
324: double divisor=1;
325: for(uint8_t i=0; i<f.value.decimal.decimals; i++) divisor*=10;
326: return new VDouble(f.value.decimal.value/divisor);
327: }
328: case AMQP_FIELD_KIND_TABLE:
329: return amqp_table_to_hash(f.value.table);
330: case AMQP_FIELD_KIND_ARRAY: {
331: VArray* result=new VArray();
332: ArrayValue& av=result->array();
333: for(int i=0; i<f.value.array.num_entries; i++)
334: av+=amqp_field_to_value(f.value.array.entries[i]);
335: return result;
336: }
337: case AMQP_FIELD_KIND_VOID:
338: return VVoid::get();
339: default:
340: return VString::empty();
341: }
342: }
343:
344: static VHash* amqp_table_to_hash(amqp_table_t& table) {
345: VHash* result=new VHash;
346: HashStringValue* h=result->get_hash();
347: for(int i=0; i<table.num_entries; i++){
348: amqp_table_entry_t& e=table.entries[i];
349: h->put(*AMQP_STRING(e.key.bytes, e.key.len), amqp_field_to_value(e.value));
350: }
351: return result;
352: }
353:
1.1 moko 354: static void _publish(Request& r, MethodParams& params) {
355: VAmqp& self=GET_SELF(r, VAmqp);
356: const String &msg=params.as_string(0, "msg must be string");
357: const char* exchange_c = ""; // default exchange
358: const char* routing_key_c = 0;
359: bool mandatory=false;
360:
361: amqp_basic_properties_t props;
362: props._flags = 0;
363:
364: if(params.count()>1){
365: if(HashStringValue* options=params.as_hash(1)){
366: for(HashStringValue::Iterator i(*options); i; i.next()){
367: String::Body key=i.key();
368: Value* value=i.value();
369: if(key=="exchange"){
370: exchange_c=value->as_string().cstr();
371: } else if(key=="routing_key"){
372: routing_key_c=value->as_string().cstr();
373: } else if(key=="queue"){
1.3 moko 374: routing_key_c=value->as_string().cstr();
1.1 moko 375: } else if(key=="mandatory"){
376: mandatory=r.process(*value).as_bool();
1.3 moko 377: } else if(key=="content_type"){
378: const char* v=value->as_string().cstr();
379: props.content_type=amqp_cstring_bytes(v);
380: props._flags|=AMQP_BASIC_CONTENT_TYPE_FLAG;
381: } else if(key=="content_encoding"){
382: const char* v=value->as_string().cstr();
383: props.content_encoding=amqp_cstring_bytes(v);
384: props._flags|=AMQP_BASIC_CONTENT_ENCODING_FLAG;
385: } else if(key=="delivery_mode"){
386: uint8_t dm=(uint8_t)value->as_int();
387: props.delivery_mode=dm;
388: props._flags|=AMQP_BASIC_DELIVERY_MODE_FLAG;
389: } else if(key=="priority"){
390: uint8_t pr=(uint8_t)value->as_int();
391: props.priority=pr;
392: props._flags|=AMQP_BASIC_PRIORITY_FLAG;
393: } else if(key=="correlation_id"){
394: const char* v=value->as_string().cstr();
395: props.correlation_id=amqp_cstring_bytes(v);
396: props._flags|=AMQP_BASIC_CORRELATION_ID_FLAG;
397: } else if(key=="reply_to"){
398: const char* v=value->as_string().cstr();
399: props.reply_to=amqp_cstring_bytes(v);
400: props._flags|=AMQP_BASIC_REPLY_TO_FLAG;
401: } else if(key=="expiration"){
402: const char* v=value->as_string().cstr();
403: props.expiration=amqp_cstring_bytes(v);
404: props._flags|=AMQP_BASIC_EXPIRATION_FLAG;
405: } else if(key=="message_id"){
406: const char* v=value->as_string().cstr();
407: props.message_id=amqp_cstring_bytes(v);
408: props._flags|=AMQP_BASIC_MESSAGE_ID_FLAG;
409: } else if(key=="timestamp"){
410: uint64_t ts=(uint64_t)value->as_double();
411: props.timestamp=ts;
412: props._flags|=AMQP_BASIC_TIMESTAMP_FLAG;
413: } else if(key=="type"){
414: const char* v=value->as_string().cstr();
415: props.type=amqp_cstring_bytes(v);
416: props._flags|=AMQP_BASIC_TYPE_FLAG;
417: } else if(key=="user_id"){
418: const char* v=value->as_string().cstr();
419: props.user_id=amqp_cstring_bytes(v);
420: props._flags|=AMQP_BASIC_USER_ID_FLAG;
421: } else if(key=="app_id"){
422: const char* v=value->as_string().cstr();
423: props.app_id=amqp_cstring_bytes(v);
424: props._flags|=AMQP_BASIC_APP_ID_FLAG;
1.18 moko 425: } else if(key=="cluster_id"){
426: const char* v=value->as_string().cstr();
427: props.cluster_id=amqp_cstring_bytes(v);
428: props._flags|=AMQP_BASIC_CLUSTER_ID_FLAG;
1.3 moko 429: } else if(key=="headers"){
1.17 moko 430: props.headers=amqp_build_arguments_table(r, value->get_hash());
431: props._flags|=AMQP_BASIC_HEADERS_FLAG;
432: } else
1.1 moko 433: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
434: }
435: }
436: }
437:
438: if(!routing_key_c)
439: throw Exception("amqp", 0, "routing_key or queue must be specified");
440:
441: amqp_bytes_t body;
442: body.len = msg.length();
443: body.bytes=(void*)msg.cstr();
444:
1.3 moko 445: 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 446:
1.16 moko 447: status_check(self, ret, "publish ");
1.1 moko 448: }
449:
450: static void _release(Request& r, MethodParams&) {
1.28 moko 451: GET_SELF(r, VAmqp).release();
1.1 moko 452: }
453:
1.15 moko 454: // to allow both [] and () call syntax
455: static uint64_t as_delivery_tag(MethodParams& params, int index=0) {
456: const String &tag_s=params.as_string(index, "delivery tag must not be code");
457: return pa_atoul(tag_s.cstr());
458: }
459:
1.1 moko 460: static void _ack(Request& r, MethodParams& params) {
461: VAmqp& self=GET_SELF(r, VAmqp);
1.15 moko 462: int ret = amqp_basic_ack(self.connection(), self.channel(), as_delivery_tag(params), 0);
1.16 moko 463: status_check(self, ret, "ack ");
1.1 moko 464: }
465:
466: static void _nack(Request& r, MethodParams& params) {
467: VAmqp& self=GET_SELF(r, VAmqp);
1.15 moko 468: uint64_t tag=as_delivery_tag(params);
1.1 moko 469: bool requeue=false;
470: if(params.count()>1){
471: if(HashStringValue* options=params.as_hash(1)){
472: for(HashStringValue::Iterator i(*options); i; i.next()){
473: if(i.key()=="requeue"){
474: requeue=r.process(*i.value()).as_bool();
475: } else
476: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
477: }
478: }
479: }
1.15 moko 480: int ret = amqp_basic_nack(self.connection(), self.channel(), tag, 0, requeue);
1.16 moko 481: status_check(self, ret, "nack ");
1.1 moko 482: }
483:
484: static void _qos(Request& r, MethodParams& params) {
485: VAmqp& self=GET_SELF(r, VAmqp);
486: uint16_t prefetch_count=0;
487: if(params.count()>0){
488: if(HashStringValue* options=params.as_hash(0)){
489: for(HashStringValue::Iterator i(*options); i; i.next()){
490: if(i.key()=="prefetch_count"){
491: int pc=r.process(*i.value()).as_int();
492: prefetch_count= pc<0 ? 0 : (pc>65535 ? 65535 : (uint16_t)pc);
493: } else
494: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
495: }
496: }
497: }
1.16 moko 498: amqp_basic_qos(self.connection(), self.channel(), 0, prefetch_count, 0);
499: check(self, amqp_get_rpc_reply(self.connection()), "qos ");
1.1 moko 500: }
501:
502: static void _reject(Request& r, MethodParams& params) {
503: VAmqp& self=GET_SELF(r, VAmqp);
1.15 moko 504: uint64_t tag=as_delivery_tag(params);
1.1 moko 505: bool requeue=true; // by default return to queue
506: if(params.count()>1){
507: if(HashStringValue* options = params.as_hash(1)){
508: for(HashStringValue::Iterator i(*options); i; i.next()){
509: if(i.key() == "requeue"){
510: requeue=r.process(*i.value()).as_bool();
511: } else
512: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
513: }
514: }
515: }
1.15 moko 516: int ret = amqp_basic_reject(self.connection(), self.channel(), tag, requeue);
1.16 moko 517: status_check(self, ret, "reject ");
1.1 moko 518: }
519:
1.8 moko 520: static void _declare(Request& r, MethodParams& params) {
1.1 moko 521: VAmqp& self=GET_SELF(r, VAmqp);
1.8 moko 522: const char* exchange_c = 0;
523: const char* queue_c = 0;
1.1 moko 524: const char* type_c = "direct";
1.12 moko 525: bool passive=false, durable=false, auto_delete=false, internal=false, exclusive=false;
1.17 moko 526: amqp_table_t arguments=amqp_empty_table;
1.8 moko 527: if(HashStringValue* options=params.as_hash(0)){
528: for(HashStringValue::Iterator i(*options); i; i.next()){
529: String::Body key=i.key();
530: Value* value=i.value();
531: if(key=="exchange"){
532: exchange_c=value->as_string().cstr();
533: } else if(key=="queue"){
534: queue_c=value->as_string().cstr();
535: } else if(key=="type"){
536: type_c=value->as_string().cstr();
537: } else if(key=="passive"){
538: passive=r.process(*value).as_bool();
539: } else if(key=="durable"){
540: durable=r.process(*value).as_bool();
541: } else if(key=="auto_delete"){
542: auto_delete=r.process(*value).as_bool();
1.11 moko 543: } else if(key=="internal"){
544: internal=r.process(*value).as_bool();
545: } else if(key=="exclusive"){
546: exclusive=r.process(*value).as_bool();
1.17 moko 547: } else if(key=="arguments"){
548: arguments=amqp_build_arguments_table(r, value->get_hash());
1.8 moko 549: } else
550: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.1 moko 551: }
552: }
1.8 moko 553: if(!exchange_c && !queue_c)
554: throw Exception("amqp", 0, "exchange or queue must be specified");
555:
556: if(exchange_c){
1.17 moko 557: 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 558: check(self, amqp_get_rpc_reply(self.connection()));
1.8 moko 559: }
1.1 moko 560:
1.8 moko 561: if(queue_c){
1.17 moko 562: 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 563: check(self, amqp_get_rpc_reply(self.connection()));
1.8 moko 564: if(!*queue_c && ok){
565: r.write(*AMQP_STRING(ok->queue.bytes, ok->queue.len));
1.1 moko 566: }
567: }
568: }
569:
1.8 moko 570: static void _delete(Request& r, MethodParams& params) {
1.1 moko 571: VAmqp& self=GET_SELF(r, VAmqp);
1.8 moko 572: const char* exchange_c = 0;
573: const char* queue_c = 0;
1.11 moko 574: bool if_unused=false, if_empty=false;
1.8 moko 575: if(HashStringValue* options=params.as_hash(0)){
576: for(HashStringValue::Iterator i(*options); i; i.next()){
577: String::Body key=i.key();
578: Value* value=i.value();
579: if(key=="exchange"){
580: exchange_c=value->as_string().cstr();
581: } else if(key=="queue"){
582: queue_c=value->as_string().cstr();
583: } else if(key=="if_unused"){
584: if_unused=r.process(*value).as_bool();
585: } else if(key=="if_empty"){
586: if_empty=r.process(*value).as_bool();
587: } else
588: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.1 moko 589: }
590: }
1.8 moko 591: if(!exchange_c && !queue_c)
592: throw Exception("amqp", 0, "exchange or queue must be specified");
593:
594: if(exchange_c){
595: amqp_exchange_delete(self.connection(), self.channel(), amqp_cstring_bytes(exchange_c), if_unused);
1.16 moko 596: check(self, amqp_get_rpc_reply(self.connection()));
1.1 moko 597: }
598:
1.8 moko 599: if(queue_c){
600: amqp_queue_delete(self.connection(), self.channel(), amqp_cstring_bytes(queue_c), if_unused, if_empty);
1.16 moko 601: check(self, amqp_get_rpc_reply(self.connection()));
1.1 moko 602: }
603: }
604:
1.8 moko 605: static void _bind(Request& r, MethodParams& params) {
1.1 moko 606: VAmqp& self=GET_SELF(r, VAmqp);
607: const char* exchange_c=0;
608: const char* queue_c=0;
609: const char* routing_key_c="";
1.8 moko 610: if(HashStringValue* options=params.as_hash(0)){
611: for(HashStringValue::Iterator i(*options); i; i.next()){
612: String::Body key=i.key();
613: Value* value=i.value();
614: if(key=="exchange"){
615: exchange_c=value->as_string().cstr();
616: } else if(key=="queue"){
617: queue_c=value->as_string().cstr();
618: } else if(key=="routing_key"){
619: routing_key_c=value->as_string().cstr();
620: } else
621: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.1 moko 622: }
623: }
624: if(!exchange_c || !queue_c) throw Exception("amqp", 0, "exchange and queue are required");
625: 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 626: check(self, amqp_get_rpc_reply(self.connection()));
1.1 moko 627: }
628:
1.8 moko 629: static void _unbind(Request& r, MethodParams& params) {
1.1 moko 630: VAmqp& self=GET_SELF(r, VAmqp);
631: const char* exchange_c=0;
632: const char* queue_c=0;
633: const char* routing_key_c="";
1.8 moko 634: if(HashStringValue* options=params.as_hash(0)){
635: for(HashStringValue::Iterator i(*options); i; i.next()){
636: String::Body key=i.key();
637: Value* value=i.value();
638: if(key=="exchange"){
639: exchange_c=value->as_string().cstr();
640: } else if(key=="queue"){
641: queue_c=value->as_string().cstr();
642: } else if(key=="routing_key"){
643: routing_key_c=value->as_string().cstr();
644: } else
645: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.1 moko 646: }
647: }
648: if(!exchange_c || !queue_c) throw Exception("amqp", 0, "exchange and queue are required");
649: 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 650: check(self, amqp_get_rpc_reply(self.connection()));
1.1 moko 651: }
652:
1.8 moko 653: static void _purge(Request& r, MethodParams& params) {
654: VAmqp& self=GET_SELF(r, VAmqp);
655: const char* queue_c = 0;
656: if(HashStringValue* options=params.as_hash(0)){
657: for(HashStringValue::Iterator i(*options); i; i.next()){
658: String::Body key=i.key();
659: Value* value=i.value();
660: if(key=="queue"){
661: queue_c=value->as_string().cstr();
662: } else
663: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
664: }
665: }
666: if(!queue_c)
667: throw Exception("amqp", 0, "queue must be specified");
668:
1.9 moko 669: amqp_queue_purge_ok_t *ok = amqp_queue_purge(self.connection(), self.channel(), amqp_cstring_bytes(queue_c));
1.16 moko 670: check(self, amqp_get_rpc_reply(self.connection()));
1.9 moko 671: r.write(*new VInt(ok ? ok->message_count : 0));
1.8 moko 672: }
673:
674: static void _info(Request& r, MethodParams& params) {
675: VAmqp& self = GET_SELF(r, VAmqp);
676: const char* queue_c = 0;
677:
678: if (HashStringValue* options=params.as_hash(0)) {
679: for (HashStringValue::Iterator i(*options); i; i.next()) {
680: String::Body key=i.key();
681: Value* value=i.value();
682: if(key=="queue"){
683: queue_c=value->as_string().cstr();
684: } else {
685: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
686: }
687: }
688: }
689:
690: if (!queue_c)
691: throw Exception("amqp", 0, "queue must be specified");
692:
693: 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 694: check(self, amqp_get_rpc_reply(self.connection()));
1.8 moko 695:
696: Value& result=*new VHash;
1.9 moko 697: if(ok){
698: result.put_element(*new String("queue"), AMQP_VSTRING(ok->queue.bytes, ok->queue.len));
699: result.put_element(*new String("messages"), new VInt(ok->message_count));
700: result.put_element(*new String("consumers"), new VInt(ok->consumer_count));
701: }
1.8 moko 702: r.write(result);
703: }
704:
705: static VHash *amqp_message_hash(amqp_envelope_t &envelope) {
706: VHash *result=new VHash;
707: HashStringValue* h=result->get_hash();
708: h->put("msg", AMQP_VSTRING(envelope.message.body.bytes, envelope.message.body.len));
709: h->put("delivery_tag", new VInt(envelope.delivery_tag));
710: h->put("consumer_tag", AMQP_VSTRING(envelope.consumer_tag.bytes, envelope.consumer_tag.len));
711: h->put("exchange", AMQP_VSTRING(envelope.exchange.bytes, envelope.exchange.len));
1.17 moko 712: h->put("routing_key", AMQP_VSTRING(envelope.routing_key.bytes, envelope.routing_key.len));
713: h->put("redelivered", &VBool::get(envelope.redelivered));
714:
715: // properties are only put when the publisher actually set them (per the wire's own _flags bitmask) -
716: // same handful of allocations as the fields above, just conditional on what's actually present
717: amqp_basic_properties_t& props=envelope.message.properties;
718: if(props._flags & AMQP_BASIC_CONTENT_TYPE_FLAG)
719: h->put("content_type", AMQP_VSTRING(props.content_type.bytes, props.content_type.len));
720: if(props._flags & AMQP_BASIC_CONTENT_ENCODING_FLAG)
721: h->put("content_encoding", AMQP_VSTRING(props.content_encoding.bytes, props.content_encoding.len));
722: if(props._flags & AMQP_BASIC_HEADERS_FLAG)
723: h->put("headers", amqp_table_to_hash(props.headers));
724: if(props._flags & AMQP_BASIC_DELIVERY_MODE_FLAG)
725: h->put("delivery_mode", new VInt(props.delivery_mode));
726: if(props._flags & AMQP_BASIC_PRIORITY_FLAG)
727: h->put("priority", new VInt(props.priority));
728: if(props._flags & AMQP_BASIC_CORRELATION_ID_FLAG)
729: h->put("correlation_id", AMQP_VSTRING(props.correlation_id.bytes, props.correlation_id.len));
730: if(props._flags & AMQP_BASIC_REPLY_TO_FLAG)
731: h->put("reply_to", AMQP_VSTRING(props.reply_to.bytes, props.reply_to.len));
732: if(props._flags & AMQP_BASIC_EXPIRATION_FLAG)
733: h->put("expiration", AMQP_VSTRING(props.expiration.bytes, props.expiration.len));
734: if(props._flags & AMQP_BASIC_MESSAGE_ID_FLAG)
735: h->put("message_id", AMQP_VSTRING(props.message_id.bytes, props.message_id.len));
736: if(props._flags & AMQP_BASIC_TIMESTAMP_FLAG)
737: h->put("timestamp", new VInt((pa_wint)props.timestamp));
738: if(props._flags & AMQP_BASIC_TYPE_FLAG)
739: h->put("type", AMQP_VSTRING(props.type.bytes, props.type.len));
740: if(props._flags & AMQP_BASIC_USER_ID_FLAG)
741: h->put("user_id", AMQP_VSTRING(props.user_id.bytes, props.user_id.len));
742: if(props._flags & AMQP_BASIC_APP_ID_FLAG)
743: h->put("app_id", AMQP_VSTRING(props.app_id.bytes, props.app_id.len));
744: if(props._flags & AMQP_BASIC_CLUSTER_ID_FLAG)
745: h->put("cluster_id", AMQP_VSTRING(props.cluster_id.bytes, props.cluster_id.len));
746:
1.8 moko 747: return result;
748: }
749:
1.14 moko 750: // timeout<0 - wait forever (NULL), timeout==0 - don't wait (poll), timeout>0 - wait up to timeout seconds
751: static struct timeval* amqp_wait_tv(struct timeval& tv, int timeout){
752: if(timeout<0)
753: return NULL;
754: tv.tv_sec=timeout;
755: tv.tv_usec=0;
756: return &tv;
757: }
758:
1.17 moko 759: // amqp_consume_message() returns AMQP_STATUS_UNEXPECTED_STATE when it read a frame other than a deliver while polling.
760: // Per its own documented contract, read that pending frame to find out what it actually was:
761: // - a basic.return for an earlier mandatory publish that found no route: benign, doesn't close anything;
762: // drain the returned message (header+body, still pending right behind it) and retry - the real
763: // message (if any) is still coming
764: // - anything else: a genuine channel/connection close (typically after a protocol violation) - build a
765: // reply so check() can classify it correctly (cheap channel repair vs full reconnect)
1.23 moko 766: static amqp_rpc_reply_t amqp_consume_message_checked(amqp_connection_state_t conn, amqp_channel_t channel, amqp_envelope_t* envelope, struct timeval* tv) {
1.17 moko 767: for(;;) {
768: amqp_rpc_reply_t res = amqp_consume_message(conn, envelope, tv, 0);
769: if(res.reply_type != AMQP_RESPONSE_LIBRARY_EXCEPTION || res.library_error != AMQP_STATUS_UNEXPECTED_STATE)
770: return res;
771:
772: amqp_frame_t frame;
773: if(amqp_simple_wait_frame(conn, &frame) != AMQP_STATUS_OK || frame.frame_type != AMQP_FRAME_METHOD)
774: return res; // give up, let the original UNEXPECTED_STATE be treated as fatal
775:
776: if(frame.payload.method.id == AMQP_BASIC_RETURN_METHOD) {
777: amqp_message_t message;
778: if(amqp_read_message(conn, channel, &message, 0).reply_type == AMQP_RESPONSE_NORMAL)
779: amqp_destroy_message(&message);
780: continue;
781: }
782:
783: res.reply_type = AMQP_RESPONSE_SERVER_EXCEPTION;
784: res.reply.id = frame.payload.method.id;
785: res.reply.decoded = frame.payload.method.decoded;
786: return res;
787: }
1.16 moko 788: }
789:
1.18 moko 790: // Auto-object used for cancelling the consumer when the enclosing scope exits. A cancel failure here must
791: // never mask whatever error is already propagating, so its result is discarded rather than check()ed.
792: class Temp_amqp_consumer {
793: public:
1.19 moko 794: Temp_amqp_consumer(VAmqp& aself, const char* aconsumer_tag, bool adrain): self(aself), consumer_tag(aconsumer_tag), drain(adrain) {}
1.18 moko 795: ~Temp_amqp_consumer() {
796: if(!consumer_tag || self.fstate != VAmqp::ALIVE) return;
797: amqp_basic_cancel(self.fconnection, self.fchannel, amqp_cstring_bytes(consumer_tag));
798: amqp_get_rpc_reply(self.fconnection);
1.19 moko 799: if(drain){
800: // The broker may have already sent a deliver frame for this (now cancelled) consumer before it even saw our cancel,
801: // so it can still be sitting in the library's own buffer. Its delivery tag belongs to the pre-reset channel and
802: // won't exist anymore afterward, so drain anything already in flight - otherwise it would surface later, misattributed.
803: amqp_envelope_t envelope;
804: struct timeval no_wait = {0,0};
805: while(amqp_consume_message(self.fconnection, &envelope, &no_wait, 0).reply_type == AMQP_RESPONSE_NORMAL)
806: amqp_destroy_envelope(&envelope);
807: amqp_reset_channel(self);
808: }
1.18 moko 809: }
810: private:
811: VAmqp& self;
812: const char* consumer_tag;
1.19 moko 813: bool drain;
1.18 moko 814: };
815:
1.1 moko 816: static void _consume(Request& r, MethodParams& params) {
817: VAmqp& self=GET_SELF(r, VAmqp);
818: const char* queue_c=0;
819: const char* consumer_tag_c=0;
1.17 moko 820: bool ack=true, exclusive=false;
1.14 moko 821: int count=1; bool count_specified=false;
822: int timeout=0; bool timeout_specified=false;
1.1 moko 823: Junction* callback=0;
824:
1.2 moko 825: if(HashStringValue* options=params.as_hash(0)){
826: for(HashStringValue::Iterator i(*options); i; i.next()){
827: String::Body key=i.key();
828: Value* value=i.value();
1.3 moko 829: if(key=="callback"){
830: callback=value->get_junction();
831: } else if(key=="queue"){
1.2 moko 832: queue_c=value->as_string().cstr();
833: } else if(key=="consumer_tag"){
834: consumer_tag_c=value->as_string().cstr();
1.17 moko 835: } else if(key=="ack"){
836: ack=r.process(*value).as_bool();
1.10 moko 837: } else if(key=="exclusive"){
838: exclusive=r.process(*value).as_bool();
1.8 moko 839: } else if(key=="count"){
840: count=r.process(*value).as_int();
1.14 moko 841: count_specified=true;
842: } else if(key=="timeout"){
843: timeout=r.process(*value).as_int();
844: timeout_specified=true;
1.2 moko 845: } else
846: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.1 moko 847: }
848: }
849:
1.8 moko 850: if(!queue_c) throw Exception("amqp", 0, "queue must be specified");
1.14 moko 851: if(count==0) throw Exception("amqp", 0, "count must not be zero");
852:
853: // listen mode (callback): count/timeout unlimited by default - runs until stop_consume/timeout/error
854: // pull mode (no callback): count(1)/timeout(0) by default - returns whatever is ready right now
855: if(!count_specified)
856: count = callback ? -1 : 1;
857: if(!timeout_specified)
858: timeout = callback ? -1 : 0;
1.1 moko 859:
1.9 moko 860: amqp_basic_consume_ok_t *ok = amqp_basic_consume(self.connection(), self.channel(), amqp_cstring_bytes(queue_c),
1.1 moko 861: consumer_tag_c ? amqp_cstring_bytes(consumer_tag_c) : amqp_empty_bytes,
1.17 moko 862: 0 /*no_local*/, !ack, exclusive, amqp_empty_table);
1.16 moko 863: check(self, amqp_get_rpc_reply(self.connection()));
1.1 moko 864:
1.15 moko 865: // amqp_maybe_release_buffers() recycles ok->consumer_tag
866: const char* consumer_tag_copy = ok ? pa_strdup((const char*)ok->consumer_tag.bytes, ok->consumer_tag.len) : 0;
1.19 moko 867: Temp_amqp_consumer cancel_consumer(self, consumer_tag_copy, ack && callback);
1.15 moko 868:
1.14 moko 869: struct timeval tv;
870:
1.8 moko 871: if(callback){
872: self.fstop=false;
1.14 moko 873: for(int received=0; !self.fstop && (count<0 || received<count); received++){
1.8 moko 874: amqp_envelope_t envelope;
875: memset(&envelope, 0, sizeof(envelope));
876: amqp_maybe_release_buffers(self.connection());
1.14 moko 877: // timeout is the max idle gap between messages, re-armed on every wait
1.17 moko 878: amqp_rpc_reply_t res = amqp_consume_message_checked(self.connection(), self.channel(), &envelope, amqp_wait_tv(tv, timeout));
1.8 moko 879: if(res.reply_type == AMQP_RESPONSE_NORMAL){
880: VHash *vh=amqp_message_hash(envelope);
881: Value *params_cb[]={vh};
882: METHOD_FRAME_ACTION(*callback->method, r.method_frame, callback->self, {
883: frame.store_params(params_cb, 1);
884: r.call(frame);
885: });
886: amqp_destroy_envelope(&envelope);
887: } else if(res.reply_type == AMQP_RESPONSE_LIBRARY_EXCEPTION && res.library_error == AMQP_STATUS_TIMEOUT) {
1.14 moko 888: break; // idle too long - stop cleanly
1.8 moko 889: } else {
1.17 moko 890: check(self, res, "consume ");
1.8 moko 891: }
892: }
893: } else {
894: VArray& result=*new VArray();
895: ArrayValue& result_array=result.array();
896:
1.14 moko 897: for(int received=0; count<0 || received<count; received++){
1.8 moko 898: amqp_envelope_t envelope;
899: memset(&envelope, 0, sizeof(envelope));
900: amqp_maybe_release_buffers(self.connection());
1.14 moko 901: // timeout applies only to the first message of the batch;
902: // the rest is drained with a non-blocking poll until nothing more is ready
1.17 moko 903: 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 904: if(res.reply_type == AMQP_RESPONSE_NORMAL){
905: result_array+=amqp_message_hash(envelope);
906: amqp_destroy_envelope(&envelope);
1.14 moko 907: } else if(res.reply_type == AMQP_RESPONSE_LIBRARY_EXCEPTION && res.library_error == AMQP_STATUS_TIMEOUT) {
908: break; // nothing (more) ready - return what we have
1.8 moko 909: } else {
1.17 moko 910: check(self, res, "consume ");
1.8 moko 911: }
1.1 moko 912: }
1.8 moko 913: r.write(result);
1.1 moko 914: }
915: }
916:
917: static void _stop_consume(Request& r, MethodParams&) {
918: VAmqp& self=GET_SELF(r, VAmqp);
919: self.fstop=true;
920: }
921:
1.6 moko 922: #endif // WITH_AMQP
1.1 moko 923:
924: // constructor
925: MAmqp::MAmqp(): Methoded("amqp") {
926: add_native_method("create", Method::CT_DYNAMIC, _create, 0, 1);
927: #ifdef WITH_AMQP
928: add_native_method("publish", Method::CT_DYNAMIC, _publish, 1, 2);
929: add_native_method("release", Method::CT_DYNAMIC, _release, 0, 0);
930: add_native_method("ack", Method::CT_DYNAMIC, _ack, 1, 1);
931: add_native_method("nack", Method::CT_DYNAMIC, _nack, 1, 2);
932: add_native_method("reject", Method::CT_DYNAMIC, _reject, 1, 2);
933: add_native_method("qos", Method::CT_DYNAMIC, _qos, 0, 1);
1.8 moko 934: add_native_method("declare", Method::CT_DYNAMIC, _declare, 1, 1);
935: add_native_method("delete", Method::CT_DYNAMIC, _delete, 1, 1);
936: add_native_method("bind", Method::CT_DYNAMIC, _bind, 1, 1);
937: add_native_method("unbind", Method::CT_DYNAMIC, _unbind, 1, 1);
938: add_native_method("purge", Method::CT_DYNAMIC, _purge, 1, 1);
939: add_native_method("info", Method::CT_DYNAMIC, _info, 1, 1);
1.2 moko 940: add_native_method("consume", Method::CT_DYNAMIC, _consume, 1, 1);
1.1 moko 941: add_native_method("stop_consume", Method::CT_DYNAMIC, _stop_consume, 0, 0);
1.6 moko 942: #endif // WITH_AMQP
1.1 moko 943: }
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