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bang-routing.c
270 lines (201 loc) · 6.96 KB
/
bang-routing.c
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#include"bang-com.h"
#include"bang-routing.h"
#include"bang-module.h"
#include"bang-module-api.h"
#include"bang-signals.h"
#include"bang-types.h"
#include"bang-utils.h"
#include<assert.h>
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<uuid/uuid.h>
enum remote_route {
REMOTE,
LOCAL
};
typedef struct {
int peer_id;
char *module_name;
unsigned char *module_version;
} peer_route;
typedef struct {
enum remote_route remote;
peer_route *pr;
BANG_module *mr;
} peer_or_module;
static int uuid_hashcode(const void *uuid);
static int uuid_ptr_compare(const void *uuid1, const void *uuid2);
static peer_or_module *new_pom_module_route(BANG_module *module);
static peer_or_module *new_pom_peer_route(int peer_id, char *module_name, unsigned char *module_version);
static BANG_request* create_request(enum BANG_request_types request, uuid_t authority, uuid_t peer);
static BANG_request* create_request_with_message(enum BANG_request_types request, char *message);
static BANG_request* create_request_with_job(enum BANG_request_types request, uuid_t authority, uuid_t peer, BANG_job *job);
static BANG_hashmap *routes = NULL;
static int uuid_hashcode(const void *uuid) {
assert(uuid != NULL);
int hc = (*((uuid_t*)uuid)[0] << 2) & (*((uuid_t*)uuid)[15]);
return hc;
}
static int uuid_ptr_compare(const void *uuid1, const void *uuid2) {
return uuid_compare(*((uuid_t*)uuid1),*((uuid_t*)uuid2));
}
static peer_or_module *new_pom_module_route(BANG_module *module) {
peer_or_module *new = malloc(sizeof(peer_or_module));
new->remote = LOCAL;
new->mr = module;
return new;
}
static peer_or_module *new_pom_peer_route(int peer_id, char *module_name, unsigned char *module_version) {
peer_or_module *new = malloc(sizeof(peer_or_module));
new->remote = REMOTE;
new->pr = malloc(sizeof(peer_route));
new->pr->peer_id = peer_id;
new->pr->module_name = module_name;
new->pr->module_version = module_version;
return new;
}
static BANG_request* create_request(enum BANG_request_types request, uuid_t authority, uuid_t peer) {
int request_length = 40;
void *request_data = malloc(request_length);
memcpy(request_data,authority,16);
memcpy(request_data + 16,peer,16);
return new_BANG_request(request,request_data,request_length);
}
static BANG_request* create_request_with_message(enum BANG_request_types request, char *message) {
return new_BANG_request(request,message,strlen(message));
}
static BANG_request* create_request_with_job(enum BANG_request_types request, uuid_t authority, uuid_t peer, BANG_job *job) {
int request_length = job->length + 40;
void *request_data = malloc(request_length);
memcpy(request_data,authority,16);
memcpy(request_data + 16,peer,16);
memcpy(request_data + 32,&job->job_number,4);
memcpy(request_data + 36,&job->length,4);
memcpy(request_data + 40,&job->data,job->length);
return new_BANG_request(request,request_data,request_length);
}
void BANG_route_job(uuid_t authority, uuid_t peer, BANG_job *job) {
assert(routes != NULL);
assert(job != NULL);
assert(!uuid_is_null(authority));
assert(!uuid_is_null(peer));
peer_or_module *route = BANG_hashmap_get(routes,&peer);
if (route == NULL) return;
if (route->remote == LOCAL) {
BANG_module_callback_job(route->mr,job,authority,peer);
} else {
BANG_request *request = create_request_with_job(BANG_SEND_JOB_REQUEST,authority,peer,job);
BANG_request_peer_id(route->pr->peer_id,request);
}
}
void BANG_route_job_to_uuids(uuid_t authority, uuid_t *peers, BANG_job *job) {
assert(routes != NULL);
assert(job != NULL);
int i;
for (i = 0; !uuid_is_null(peers[i]); ++i) {
BANG_route_job(authority,peers[i],job);
}
}
void BANG_route_finished_job(uuid_t authority, uuid_t peer, BANG_job *job) {
assert(routes != NULL);
assert(job != NULL);
assert(!uuid_is_null(authority));
assert(!uuid_is_null(peer));
peer_or_module *route = BANG_hashmap_get(routes,&authority);
if (route == NULL) return;
if (route->remote == LOCAL) {
BANG_module_callback_job_finished(route->mr,job,authority,peer);
} else {
BANG_request *request = create_request_with_job(BANG_SEND_FINISHED_JOB_REQUEST,authority,peer,job);
BANG_request_peer_id(route->pr->peer_id,request);
}
}
void BANG_route_request_job(uuid_t peer, uuid_t authority) {
assert(routes != NULL);
assert(!uuid_is_null(authority));
assert(!uuid_is_null(peer));
peer_or_module *route = BANG_hashmap_get(routes,&authority);
if (route == NULL) return;
if (route->remote == LOCAL) {
BANG_module_callback_job_request(route->mr,authority,peer);
} else {
BANG_request *request = create_request(BANG_SEND_REQUEST_JOB_REQUEST,authority,peer);
BANG_request_peer_id(route->pr->peer_id,request);
}
}
void BANG_route_assertion_of_authority(uuid_t authority, uuid_t peer) {
assert(routes != NULL);
assert(!uuid_is_null(authority));
assert(!uuid_is_null(peer));
peer_or_module *route = BANG_hashmap_get(routes,&peer);
if (route == NULL) return;
if (route->remote == LOCAL) {
BANG_module_callback_job_available(route->mr,authority,peer);
} else {
BANG_request *request = create_request(BANG_SEND_AVAILABLE_JOB_REQUEST,authority,peer);
BANG_request_peer_id(route->pr->peer_id,request);
}
}
void BANG_route_send_message(uuid_t peer, char *message) {
assert(routes != NULL);
assert(message != NULL);
assert(!uuid_is_null(peer));
peer_or_module *route = BANG_hashmap_get(routes,&peer);
if (route == NULL) return;
if (route->remote == LOCAL) {
fprintf(stderr,"%s",message);
} else {
BANG_request *request = create_request_with_message(BANG_DEBUG_REQUEST,message);
BANG_request_peer_id(route->pr->peer_id,request);
}
}
int BANG_route_get_peer_id(uuid_t peer) {
assert(routes != NULL);
assert(!uuid_is_null(peer));
peer_or_module *route = BANG_hashmap_get(routes,&peer);
route = NULL;
return -1;
}
int** BANG_not_route_get_peer_id(uuid_t *peers) {
assert(routes != NULL);
assert(peers != NULL);
return NULL;
}
void BANG_route_new_peer(uuid_t peer, uuid_t new_peer) {
assert(routes != NULL);
assert(!uuid_is_null(peer));
assert(!uuid_is_null(new_peer));
}
void BANG_route_remove_peer(uuid_t peer, uuid_t old_peer) {
assert(routes != NULL);
assert(!uuid_is_null(peer));
assert(!uuid_is_null(old_peer));
}
void BANG_register_module_route(BANG_module *module) {
assert(routes != NULL);
assert(module != NULL);
uuid_t new_uuid;
uuid_generate(new_uuid);
peer_or_module *pom = new_pom_module_route(module);
BANG_hashmap_set(routes,&new_uuid,pom);
}
void BANG_register_peer_route(uuid_t uuid, int peer_id, char *module_name, unsigned char* module_version) {
assert(routes != NULL);
assert(!uuid_is_null(uuid));
assert(peer_id != -1);
peer_or_module *pom = new_pom_peer_route(peer_id,module_name,module_version);
BANG_hashmap_set(routes,&uuid,pom);
}
void BANG_deregister_route(uuid_t route) {
assert(!uuid_is_null(route));
assert(routes != NULL);
BANG_hashmap_set(routes,&route,NULL);
}
void BANG_route_init() {
routes = new_BANG_hashmap(&uuid_hashcode,&uuid_ptr_compare);
}
void BANG_route_close() {
free_BANG_hashmap(routes);
routes = NULL;
}