441 lines
10 KiB
C++
441 lines
10 KiB
C++
#include "nodes.h"
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#include <string>
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#include <cstring>
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#include <iostream>
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#include <future>
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#include <functional>
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#include <algorithm>
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#include "envv.h"
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Nodes::Nodes()
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{
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}
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bool Nodes::check_node_ssh(int node)
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{
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bool res = true;
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if (ssh_node(node, "ls > /dev/null", false) != 0)
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{
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std::cout << "Node " << node << " is not available" << std::endl;
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res = false;
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}
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return res;
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}
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bool Nodes::check_nodes()
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{
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std::vector<std::future<bool>> f;
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for (int i = 0; i < N; i++)
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{
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f.push_back(std::async(std::launch::async, &Nodes::check_node_ssh, this, i));
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}
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return std::all_of(f.begin(), f.end(), std::mem_fn(&std::future<bool>::get));
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}
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void Nodes::generate_ssh_cmd(char* cmd, int node, const char* ssh, bool sudo)
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{
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if (strcmp(IP[node], "127.0.0.1") == 0)
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{
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if (sudo)
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{
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sprintf(cmd,
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"%s %s",
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access_sudo[node],
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ssh);
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}
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else
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{
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sprintf(cmd, "%s", ssh);
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}
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}
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else
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{
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if (sudo)
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{
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sprintf(cmd,
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"ssh -i %s -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -o LogLevel=quiet %s@%s '%s %s\'",
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sshkey[node],
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access_user[node],
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IP[node],
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access_sudo[node],
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ssh);
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}
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else
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{
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sprintf(cmd,
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"ssh -i %s -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -o LogLevel=quiet %s@%s '%s'",
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sshkey[node],
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access_user[node],
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IP[node],
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ssh);
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}
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}
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}
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char* Nodes::ssh_node_output_f(int node, bool sudo, int* exit_code, const char* format, ...)
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{
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va_list valist;
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va_start(valist, format);
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int message_len = vsnprintf(NULL, 0, format, valist);
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va_end(valist);
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if (message_len < 0)
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{
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return NULL;
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}
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char* sys = (char*)malloc(message_len + 1);
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va_start(valist, format);
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vsnprintf(sys, message_len + 1, format, valist);
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va_end(valist);
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char* result = ssh_node_output(node, sys, sudo, exit_code);
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free(sys);
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return result;
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}
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char* Nodes::ssh_node_output(int node, const char* ssh, bool sudo, int* exit_code)
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{
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char* cmd = (char*)malloc(strlen(ssh) + 1024);
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generate_ssh_cmd(cmd, node, ssh, sudo);
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FILE* output = popen(cmd, "r");
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if (output == NULL)
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{
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printf("Error opening ssh %s\n", strerror(errno));
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return NULL;
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}
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char buffer[1024];
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size_t rsize = sizeof(buffer);
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char* result = (char*)calloc(rsize, sizeof(char));
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while (fgets(buffer, sizeof(buffer), output))
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{
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result = (char*)realloc(result, sizeof(buffer) + rsize);
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rsize += sizeof(buffer);
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strcat(result, buffer);
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}
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free(cmd);
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int code = pclose(output);
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if (WIFEXITED(code))
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{
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* exit_code = WEXITSTATUS(code);
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}
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else
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{
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* exit_code = 256;
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}
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return result;
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}
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int Nodes::ssh_node(int node, const char* ssh, bool sudo)
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{
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char* cmd = (char*)malloc(strlen(ssh) + 1024);
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if (strcmp(IP[node], "127.0.0.1") == 0)
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{
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printf("starting bash\n");
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sprintf(cmd, "bash");
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}
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else
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{
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sprintf(cmd,
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"ssh -i %s -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -o LogLevel=quiet %s@%s%s",
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sshkey[node],
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access_user[node],
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IP[node],
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verbose ? "" : " > /dev/null");
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}
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if (verbose)
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{
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std::cout << ssh << std::endl;
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}
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int rc = 1;
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FILE* in = popen(cmd, "w");
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if (in)
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{
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if (sudo)
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{
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fprintf(in, "sudo su -\n");
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fprintf(in, "cd /home/%s\n", access_user[node]);
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}
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fprintf(in, "%s\n", ssh);
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rc = pclose(in);
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}
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free(cmd);
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if (WIFEXITED(rc))
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{
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return WEXITSTATUS(rc);
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}
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else
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{
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return 256;
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}
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}
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int Nodes::ssh_node_f(int node, bool sudo, const char* format, ...)
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{
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va_list valist;
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va_start(valist, format);
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int message_len = vsnprintf(NULL, 0, format, valist);
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va_end(valist);
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if (message_len < 0)
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{
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return -1;
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}
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char* sys = (char*)malloc(message_len + 1);
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va_start(valist, format);
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vsnprintf(sys, message_len + 1, format, valist);
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va_end(valist);
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int result = ssh_node(node, sys, sudo);
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free(sys);
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return result;
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}
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int Nodes::copy_to_node(int i, const char* src, const char* dest)
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{
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if (i >= N)
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{
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return 1;
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}
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char sys[strlen(src) + strlen(dest) + 1024];
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if (strcmp(IP[i], "127.0.0.1") == 0)
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{
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sprintf(sys,
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"cp %s %s",
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src,
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dest);
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}
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else
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{
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sprintf(sys,
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"scp -q -r -i %s -o UserKnownHostsFile=/dev/null "
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"-o StrictHostKeyChecking=no -o LogLevel=quiet %s %s@%s:%s",
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sshkey[i],
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src,
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access_user[i],
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IP[i],
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dest);
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}
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if (verbose)
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{
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printf("%s\n", sys);
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}
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return system(sys);
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}
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int Nodes::copy_to_node_legacy(const char* src, const char* dest, int i)
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{
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return copy_to_node(i, src, dest);
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}
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int Nodes::copy_from_node(int i, const char* src, const char* dest)
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{
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if (i >= N)
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{
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return 1;
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}
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char sys[strlen(src) + strlen(dest) + 1024];
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if (strcmp(IP[i], "127.0.0.1") == 0)
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{
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sprintf(sys,
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"cp %s %s",
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src,
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dest);
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}
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else
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{
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sprintf(sys,
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"scp -q -r -i %s -o UserKnownHostsFile=/dev/null "
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"-o StrictHostKeyChecking=no -o LogLevel=quiet %s@%s:%s %s",
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sshkey[i],
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access_user[i],
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IP[i],
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src,
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dest);
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}
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if (verbose)
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{
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printf("%s\n", sys);
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}
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return system(sys);
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}
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int Nodes::copy_from_node_legacy(const char* src, const char* dest, int i)
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{
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return copy_from_node(i, src, dest);
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}
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int Nodes::read_basic_env()
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{
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char env_name[64];
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sprintf(env_name, "%s_user", prefix);
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user_name = readenv(env_name, "skysql");
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sprintf(env_name, "%s_password", prefix);
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password = readenv(env_name, "skysql");
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N = get_N();
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if ((N > 0) && (N < 255))
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{
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for (int i = 0; i < N; i++)
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{
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// reading IPs
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sprintf(env_name, "%s_%03d_network", prefix, i);
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IP[i] = get_nc_item((char*) env_name);
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// reading private IPs
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sprintf(env_name, "%s_%03d_private_ip", prefix, i);
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IP_private[i] = get_nc_item((char*) env_name);
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if (IP_private[i] == NULL)
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{
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IP_private[i] = IP[i];
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}
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setenv(env_name, IP_private[i], 1);
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// reading IPv6
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sprintf(env_name, "%s_%03d_network6", prefix, i);
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IP6[i] = get_nc_item((char*) env_name);
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if (IP6[i] == NULL)
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{
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IP6[i] = IP[i];
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}
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setenv(env_name, IP6[i], 1);
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//reading sshkey
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sprintf(env_name, "%s_%03d_keyfile", prefix, i);
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sshkey[i] = get_nc_item((char*) env_name);
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sprintf(env_name, "%s_%03d_whoami", prefix, i);
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access_user[i] = get_nc_item((char*) env_name);
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if (access_user[i] == NULL)
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{
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access_user[i] = (char *) "vagrant";
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}
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setenv(env_name, access_user[i], 1);
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sprintf(env_name, "%s_%03d_access_sudo", prefix, i);
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access_sudo[i] = readenv(env_name, " sudo ");
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if (strcmp(access_user[i], "root") == 0)
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{
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access_homedir[i] = (char *) "/root/";
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}
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else
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{
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access_homedir[i] = (char *) malloc(strlen(access_user[i] + 9));
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sprintf(access_homedir[i], "/home/%s/", access_user[i]);
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}
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sprintf(env_name, "%s_%03d_hostname", prefix, i);
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hostname[i] = get_nc_item((char*) env_name);
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if (hostname[i] == NULL)
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{
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hostname[i] = IP[i];
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}
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setenv(env_name, hostname[i], 1);
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sprintf(env_name, "%s_%03d_start_vm_command", prefix, i);
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start_vm_command[i] = readenv(env_name, "curr_dir=`pwd`; cd %s/%s;vagrant resume %s_%03d ; cd $curr_dir",
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getenv("MDBCI_VM_PATH"), getenv("name"), prefix, i);
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setenv(env_name, start_vm_command[i], 1);
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sprintf(env_name, "%s_%03d_stop_vm_command", prefix, i);
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stop_vm_command[i] = readenv(env_name, "curr_dir=`pwd`; cd %s/%s;vagrant suspend %s_%03d ; cd $curr_dir",
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getenv("MDBCI_VM_PATH"), getenv("name"), prefix, i);
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setenv(env_name, stop_vm_command[i], 1);
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}
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}
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return 0;
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}
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const char* Nodes::ip(int i) const
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{
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return use_ipv6 ? IP6[i] : IP[i];
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}
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char * Nodes::get_nc_item(char * item_name)
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{
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size_t start = network_config.find(item_name);
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if (start == std::string::npos)
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{
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return NULL;
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}
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size_t end = network_config.find("\n", start);
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size_t equal = network_config.find("=", start);
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if (end == std::string::npos)
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{
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end = network_config.length();
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}
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if (equal == std::string::npos)
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{
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return NULL;
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}
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char * cstr = new char [end - equal + 1];
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strcpy(cstr, network_config.substr(equal + 1, end - equal - 1).c_str());
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setenv(item_name, cstr, 1);
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return (cstr);
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}
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int Nodes::get_N()
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{
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int N = 0;
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char item[strlen(prefix) + 13];
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do
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{
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sprintf(item, "%s_%03d_network", prefix, N);
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N++;
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}
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while (network_config.find(item) != std::string::npos);
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sprintf(item, "%s_N", prefix);
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setenv(item, std::to_string(N).c_str(), 1);
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return N - 1 ;
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}
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int Nodes::start_vm(int node)
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{
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return (system(start_vm_command[node]));
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}
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int Nodes::stop_vm(int node)
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{
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return (system(stop_vm_command[node]));
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}
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