int
ReliSock::get_bytes_nobuffer(char *buffer, int max_length, int receive_size)
{
int result;
int length;
unsigned char * buf = NULL;
ASSERT(buffer != NULL);
ASSERT(max_length > 0);
// Find out how big the file is going to be, if requested.
// No receive_size means read max_length bytes.
this->decode();
if ( receive_size ) {
ASSERT( this->code(length) != FALSE );
ASSERT( this->end_of_message() != FALSE );
} else {
length = max_length;
}
// First drain incoming buffers
if ( !prepare_for_nobuffering(stream_decode) ) {
// error draining buffers; error message already printed
goto error;
}
if( length > max_length ) {
dprintf(D_ALWAYS,
"ReliSock::get_bytes_nobuffer: data too large for buffer.\n");
goto error;
}
result = condor_read(peer_description(), _sock, buffer, length, _timeout);
if( result < 0 ) {
dprintf(D_ALWAYS,
"ReliSock::get_bytes_nobuffer: Failed to receive file.\n");
goto error;
}
else {
// See if it needs to be decrypted
if (get_encryption()) {
unwrap((unsigned char *) buffer, result, buf, length); // I am reusing length
memcpy(buffer, buf, result);
free(buf);
}
_bytes_recvd += result;
return result;
}
error:
return -1;
}
int
DockerAPI::stats(const std::string &container, uint64_t &memUsage, uint64_t &netIn, uint64_t &netOut, uint64_t &userCpu, uint64_t &sysCpu) {
#if defined(WIN32)
return -1;
#else
/*
* Create a Unix domain socket
*
* This is what the docker server listens on
*/
int uds = socket(AF_UNIX, SOCK_STREAM, 0);
if (uds < 0) {
dprintf(D_ALWAYS, "Can't create unix domain socket, no docker statistics will be available\n");
return -1;
}
struct sockaddr_un sa;
memset(&sa, 0, sizeof(sa));
sa.sun_family = AF_UNIX;
strncpy(sa.sun_path, "/var/run/docker.sock",sizeof(sa.sun_path) - 1);
{
TemporaryPrivSentry sentry(PRIV_ROOT);
int cr = connect(uds, (struct sockaddr *) &sa, sizeof(sa));
if (cr != 0) {
dprintf(D_ALWAYS, "Can't connect to /var/run/docker.sock %s, no statistics will be available\n", strerror(errno));
close(uds);
return -1;
}
}
char request[256];
sprintf(request, "GET /containers/%s/stats?stream=0 HTTP/0.9\r\n\r\n", container.c_str());
int ret = write(uds, request, strlen(request));
if (ret < 0) {
dprintf(D_ALWAYS, "Can't send request to docker server, no statistics will be available\n");
close(uds);
return -1;
}
std::string response;
char buf[1024];
int written;
// read with 200 second timeout, no flags, nonblocking
while ((written = condor_read("Docker Socket", uds, buf, 1, 5, 0, false)) > 0) {
response.append(buf, written);
}
dprintf(D_FULLDEBUG, "docker stats: %s\n", response.c_str());
close(uds);
// Response now contains an enormous JSON formatted response
// Hackily extract the fields we are interested in
size_t pos;
memUsage = netIn = netOut = userCpu = sysCpu = 0;
// Would really like a real JSON parser here...
pos = response.find("\"max_usage\"");
if (pos != std::string::npos) {
sscanf(response.c_str()+pos, "\"max_usage\":%ld", &memUsage);
}
pos = response.find("\"tx_bytes\"");
if (pos != std::string::npos) {
sscanf(response.c_str()+pos, "\"tx_bytes\":%ld", &netOut);
}
pos = response.find("\"rx_bytes\"");
if (pos != std::string::npos) {
sscanf(response.c_str()+pos, "\"rx_bytes\":%ld", &netIn);
}
pos = response.find("\"usage_in_usermode\"");
if (pos != std::string::npos) {
sscanf(response.c_str()+pos, "\"usage_in_usermode\":%ld", &userCpu);
}
pos = response.find("\"usage_in_kernelmode\"");
if (pos != std::string::npos) {
sscanf(response.c_str()+pos, "\"usage_in_kernelmode\":%ld", &sysCpu);
}
dprintf(D_FULLDEBUG, "docker stats reports max_usage is %ld rx_bytes is %ld tx_bytes is %ld usage_in_usermode is %ld usage_in-sysmode is %ld\n", memUsage, netIn, netOut, userCpu, sysCpu);
return 0;
#endif
} /*
int ReliSock::RcvMsg::rcv_packet( char const *peer_description, SOCKET _sock, int _timeout)
{
Buf *tmp;
char hdr[MAX_HEADER_SIZE];
int end;
int len, len_t, header_size;
int tmp_len;
header_size = (mode_ != MD_OFF) ? MAX_HEADER_SIZE : NORMAL_HEADER_SIZE;
int retval = condor_read(peer_description,_sock,hdr,header_size,_timeout);
if ( retval < 0 &&
retval != -2 ) // -2 means peer just closed the socket
{
dprintf(D_ALWAYS,"IO: Failed to read packet header\n");
return FALSE;
}
if ( retval == -2 ) { // -2 means peer just closed the socket
dprintf(D_FULLDEBUG,"IO: EOF reading packet header\n");
return FALSE;
}
end = (int) ((char *)hdr)[0];
memcpy(&len_t, &hdr[1], 4);
len = (int) ntohl(len_t);
if (end < 0 || end > 10) {
dprintf(D_ALWAYS,"IO: Incoming packet header unrecognized\n");
return FALSE;
}
if (!(tmp = new Buf)){
dprintf(D_ALWAYS, "IO: Out of memory\n");
return FALSE;
}
if (len > tmp->max_size()){
delete tmp;
dprintf(D_ALWAYS, "IO: Incoming packet is too big\n");
return FALSE;
}
if (len <= 0)
{
delete tmp;
dprintf(D_ALWAYS,
"IO: Incoming packet improperly sized (len=%d,end=%d)\n",
len,end);
return FALSE;
}
if ((tmp_len = tmp->read(peer_description, _sock, len, _timeout)) != len){
delete tmp;
dprintf(D_ALWAYS, "IO: Packet read failed: read %d of %d\n",
tmp_len, len);
return FALSE;
}
// Now, check MD
if (mode_ != MD_OFF) {
if (!tmp->verifyMD(&hdr[5], mdChecker_)) {
delete tmp;
dprintf(D_ALWAYS, "IO: Message Digest/MAC verification failed!\n");
return FALSE; // or something other than this
}
}
if (!buf.put(tmp)) {
delete tmp;
dprintf(D_ALWAYS, "IO: Packet storing failed\n");
return FALSE;
}
if (end) {
ready = TRUE;
}
return TRUE;
}
int
ReliSock::get_bytes_raw( char *buffer, int length )
{
return condor_read(peer_description(),_sock,buffer,length,_timeout);
}