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#include "vm.h"
#include <iostream>
#include <thread>
namespace vm {
virConnectPtr conn = NULL;
struct vmImpl {
virDomainPtr dom;
virStreamPtr stream;
std::thread receiver;
};
void initConn() {
if (conn == NULL) {
conn = virConnectOpen("qemu:///system");
}
if (conn == NULL) {
std::cerr << "Failed to open connection to qemu:///system\n";
}
}
void clearAllVMs() {
initConn();
virDomainPtr *domains;
int numDomains = virConnectListAllDomains(conn, &domains, 0);
for (int i = 0; i < numDomains; i++) {
virDomainDestroy(domains[i]);
virDomainFree(domains[i]);
}
free(domains);
}
VM::VM() : data(new vmImpl()) {
initConn();
data->stream = virStreamNew(conn, 0);
}
VM::~VM() {
virStreamAbort(data->stream);
virStreamFree(data->stream);
}
int VM::start(std::string config) {
data->dom = virDomainCreateXML(conn, config.c_str(), VIR_DOMAIN_START_AUTODESTROY);
if (!data->dom) {
std::cerr << "Domain creation failed\n";
return 1;
}
return 0;
}
void VM::stop() {
if (data->dom) {
virDomainFree(data->dom);
}
}
void receiveTask(virStreamPtr stream, std::function<int(const char*,size_t)> receiver) {
virStreamRecvAll(stream,
[](virStreamPtr stream, const char *data, size_t nbytes, void *opaque) {
auto *receiver = static_cast<std::function<int(const char*,size_t)>*>(opaque);
return (*receiver)(data, nbytes);
},
&receiver);
}
void sendTask(virStreamPtr stream, std::function<int(char*,size_t)> sender) {
virStreamSendAll(stream,
[](virStreamPtr stream, char *data, size_t nbytes, void *opaque) {
auto *sender = static_cast<std::function<int(char*,size_t)>*>(opaque);
return (*sender)(data, nbytes);
},
&sender);
}
void VM::connect(std::function<int(const char*,size_t)> receiver, std::function<int(char*,size_t)> sender) {
if (virDomainOpenConsole(data->dom, NULL, data->stream, 0)) {
std::cerr << "Failed to open console\n";
}
data->receiver = std::thread(receiveTask, data->stream, receiver);
sendTask(data->stream, sender); // Blocking
}
}
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