1 | // ============================================================= // |
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2 | // // |
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3 | // File : servercntrl.cxx // |
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4 | // Purpose : // |
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5 | // // |
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6 | // Institute of Microbiology (Technical University Munich) // |
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7 | // http://www.arb-home.de/ // |
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8 | // // |
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9 | // ============================================================= // |
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10 | |
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11 | #include <servercntrl.h> |
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12 | |
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13 | #include <client_privat.h> |
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14 | #include <client.h> |
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15 | |
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16 | #include <arbdb.h> |
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17 | #include <arb_file.h> |
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18 | #include <arb_sleep.h> |
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19 | #include <ut_valgrinded.h> |
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20 | |
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21 | /* The following lines go to servercntrl.h |
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22 | * edit here, not there!! |
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23 | * call 'make proto' to update |
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24 | */ |
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25 | |
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26 | // AISC_MKPT_PROMOTE:#ifndef ARBDB_BASE_H |
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27 | // AISC_MKPT_PROMOTE:#include <arbdb_base.h> |
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28 | // AISC_MKPT_PROMOTE:#endif |
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29 | // AISC_MKPT_PROMOTE: |
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30 | // AISC_MKPT_PROMOTE:struct arb_params { |
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31 | // AISC_MKPT_PROMOTE: char *species_name; |
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32 | // AISC_MKPT_PROMOTE: char *extended_name; |
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33 | // AISC_MKPT_PROMOTE: char *alignment; |
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34 | // AISC_MKPT_PROMOTE: char *default_file; |
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35 | // AISC_MKPT_PROMOTE: char *field; |
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36 | // AISC_MKPT_PROMOTE: const char *field_default; |
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37 | // AISC_MKPT_PROMOTE: |
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38 | // AISC_MKPT_PROMOTE: int read_only; |
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39 | // AISC_MKPT_PROMOTE: |
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40 | // AISC_MKPT_PROMOTE: char *job_server; |
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41 | // AISC_MKPT_PROMOTE: char *db_server; |
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42 | // AISC_MKPT_PROMOTE: char *mgr_server; |
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43 | // AISC_MKPT_PROMOTE: char *pt_server; |
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44 | // AISC_MKPT_PROMOTE: |
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45 | // AISC_MKPT_PROMOTE: char *tcp; |
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46 | // AISC_MKPT_PROMOTE:}; |
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47 | // AISC_MKPT_PROMOTE: |
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48 | // AISC_MKPT_PROMOTE:enum SpawnMode { |
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49 | // AISC_MKPT_PROMOTE: WAIT_FOR_TERMINATION, |
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50 | // AISC_MKPT_PROMOTE: SPAWN_ASYNCHRONOUS, |
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51 | // AISC_MKPT_PROMOTE: SPAWN_DAEMONIZED, |
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52 | // AISC_MKPT_PROMOTE:}; |
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53 | |
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54 | #define TRIES 1 |
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55 | |
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56 | static struct gl_struct { |
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57 | aisc_com *link; |
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58 | AISC_Object com; |
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59 | |
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60 | gl_struct() |
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61 | : link(NULp), com(0x10000*1) // faked type id (matches main object) |
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62 | { } |
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63 | } glservercntrl; |
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64 | |
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65 | |
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66 | inline void make_async_call(char*& command) { |
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67 | freeset(command, GBS_global_string_copy("( %s ) &", command)); |
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68 | } |
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69 | |
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70 | char *createCallOnSocketHost(const char *host, const char *remotePrefix, const char *command, SpawnMode spawnmode, const char *logfile) { |
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71 | /*! transforms a shell-command |
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72 | * - use ssh if host is not local |
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73 | * - add wrappers for detached execution |
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74 | * @param host socket specification (may be 'host:port', 'host' or ':portOrSocketfile') |
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75 | * @param remotePrefix prefixed to command if it is executed on remote host (e.g. "$ARBHOME/bin/" -> uses value of environment variable ARBHOME on remote host!) |
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76 | * @param command the shell command to execute |
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77 | * @param spawnmode how to spawn: |
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78 | * WAIT_FOR_TERMINATION = run "command" |
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79 | * SPAWN_ASYNCHRONOUS = run "( command ) &" |
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80 | * SPAWN_DAEMONIZED = do not forward kill signals, remove from joblist and redirect output to logfile |
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81 | * @param logfile use with SPAWN_DAEMONIZED (mandatory; NULp otherwise) |
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82 | * @return a SSH system call for remote hosts and direct system calls for the local machine |
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83 | */ |
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84 | |
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85 | arb_assert((remotePrefix[0] == 0) || (strchr(remotePrefix, 0)[-1] == '/')); |
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86 | arb_assert(correlated(spawnmode == SPAWN_DAEMONIZED, logfile)); |
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87 | |
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88 | char *call = NULp; |
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89 | if (host && host[0]) { |
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90 | const char *hostPort = strchr(host, ':'); |
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91 | char *hostOnly = ARB_strpartdup(host, hostPort ? hostPort-1 : NULp); |
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92 | |
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93 | if (hostOnly[0] && !GB_host_is_local(hostOnly)) { |
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94 | char *quotedRemoteCommand = GBK_singlequote(GBS_global_string("%s%s", remotePrefix, command)); |
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95 | call = GBS_global_string_copy("ssh %s -n %s", hostOnly, quotedRemoteCommand); |
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96 | free(quotedRemoteCommand); |
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97 | } |
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98 | free(hostOnly); |
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99 | } |
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100 | |
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101 | if (!call) { |
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102 | call = ARB_strdup(command); |
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103 | make_valgrinded_call(call); // only on local host |
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104 | } |
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105 | |
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106 | switch (spawnmode) { |
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107 | case WAIT_FOR_TERMINATION: |
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108 | break; |
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109 | |
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110 | case SPAWN_ASYNCHRONOUS: |
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111 | make_async_call(call); |
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112 | break; |
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113 | |
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114 | case SPAWN_DAEMONIZED: { |
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115 | char *quotedLogfile = GBK_singlequote(logfile); |
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116 | char *quotedDaemonizingCall = GBK_singlequote(GBS_global_string("nohup %s >> %s 2>&1 & disown", call, quotedLogfile)); |
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117 | |
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118 | freeset(call, GBS_global_string_copy("bash -c %s", quotedDaemonizingCall)); |
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119 | |
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120 | free(quotedDaemonizingCall); |
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121 | free(quotedLogfile); |
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122 | break; |
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123 | } |
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124 | } |
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125 | |
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126 | return call; |
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127 | } |
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128 | |
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129 | GB_ERROR arb_start_server(const char *arb_tcp_env, int do_sleep) { |
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130 | const char *tcp_id; |
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131 | GB_ERROR error = NULp; |
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132 | |
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133 | if (!(tcp_id = GBS_read_arb_tcp(arb_tcp_env))) { |
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134 | error = GB_await_error(); |
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135 | } |
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136 | else { |
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137 | const char *server = strchr(tcp_id, 0) + 1; |
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138 | char *serverparams = NULp; |
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139 | |
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140 | /* concatenate all params behind server |
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141 | Note : changed behavior on 2007/Mar/09 -- ralf |
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142 | serverparams now is one space if nothing defined in arb_tcp.dat |
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143 | (previously was same as 'server' - most likely a bug) |
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144 | */ |
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145 | { |
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146 | const char *param = strchr(server, 0)+1; |
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147 | size_t plen = strlen(param); |
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148 | size_t alllen = 0; |
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149 | |
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150 | while (plen) { |
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151 | param += plen+1; |
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152 | alllen += plen+1; |
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153 | plen = strlen(param); |
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154 | } |
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155 | |
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156 | ARB_alloc(serverparams, alllen+1); |
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157 | { |
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158 | char *sp = serverparams; |
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159 | |
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160 | param = strchr(server, 0)+1; |
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161 | plen = strlen(param); |
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162 | if (!plen) sp++; |
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163 | else do { |
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164 | memcpy(sp, param, plen); |
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165 | sp[plen] = ' '; |
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166 | sp += plen+1; |
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167 | param += plen+1; |
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168 | plen = strlen(param); |
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169 | } while (plen); |
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170 | sp[-1] = 0; |
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171 | } |
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172 | } |
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173 | |
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174 | { |
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175 | char *command = NULp; |
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176 | const char *port = strchr(tcp_id, ':'); |
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177 | |
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178 | if (!port) { |
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179 | error = GB_export_errorf("Error: Missing ':' in socket definition of '%s' in file $(ARBHOME)/lib/arb_tcp.dat", arb_tcp_env); |
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180 | } |
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181 | else { |
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182 | // When arb is called from arb_launcher, ARB_SERVER_LOG gets set to the name of a logfile. |
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183 | // If ARB_SERVER_LOG is set here -> start servers daemonized here (see #492 for motivation) |
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184 | |
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185 | const char *serverlog = GB_getenv("ARB_SERVER_LOG"); |
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186 | SpawnMode spawnmode = serverlog ? SPAWN_DAEMONIZED : SPAWN_ASYNCHRONOUS; |
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187 | char *plainCommand = GBS_global_string_copy("%s %s '-T%s'", server, serverparams, port); // Note: quotes around -T added for testing only (remove@will) |
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188 | command = createCallOnSocketHost(tcp_id, "$ARBHOME/bin/", plainCommand, spawnmode, serverlog); |
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189 | free(plainCommand); |
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190 | } |
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191 | |
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192 | if (!error) { |
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193 | error = GBK_system(command); |
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194 | if (do_sleep) ARB_sleep(5, SEC); |
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195 | } |
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196 | free(command); |
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197 | } |
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198 | free(serverparams); |
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199 | } |
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200 | return error; |
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201 | } |
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202 | |
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203 | static GB_ERROR arb_wait_for_server(const char *arb_tcp_env, const char *tcp_id, int magic_number, struct gl_struct *serverctrl, int wait) { |
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204 | GB_ERROR error = NULp; |
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205 | serverctrl->link = aisc_open(tcp_id, serverctrl->com, magic_number, &error); |
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206 | |
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207 | if (!error && !serverctrl->link) { // no server running -> start one |
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208 | error = arb_start_server(arb_tcp_env, 0); |
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209 | while (!error && !serverctrl->link && wait) { |
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210 | ARB_sleep(1, SEC); |
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211 | wait--; |
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212 | if ((wait%10) == 0 && wait>0) { |
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213 | printf("Waiting for server '%s' to come up (%i seconds left)\n", arb_tcp_env, wait); |
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214 | } |
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215 | serverctrl->link = aisc_open(tcp_id, serverctrl->com, magic_number, &error); |
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216 | } |
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217 | } |
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218 | |
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219 | return error; |
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220 | } |
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221 | |
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222 | GB_ERROR arb_look_and_start_server(long magic_number, const char *arb_tcp_env) { |
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223 | arb_assert(!GB_have_error()); |
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224 | |
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225 | GB_ERROR error = NULp; |
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226 | const char *tcp_id = GBS_read_arb_tcp(arb_tcp_env); |
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227 | const char *arb_tcp_dat = "$(ARBHOME)/lib/arb_tcp.dat"; |
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228 | |
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229 | if (!tcp_id) { |
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230 | error = GBS_global_string("Entry '%s' not found in %s (%s)", arb_tcp_env, arb_tcp_dat, GB_await_error()); |
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231 | } |
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232 | else { |
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233 | const char *file = GBS_scan_arb_tcp_param(tcp_id, "-d"); // find parameter behind '-d' |
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234 | |
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235 | if (!file) { |
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236 | error = GBS_global_string("Parameter -d missing for entry '%s' in %s", arb_tcp_env, arb_tcp_dat); |
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237 | } |
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238 | else { |
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239 | if (strcmp(file, "!ASSUME_RUNNING") == 0) { |
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240 | // assume pt-server is running on a host, w/o access to common network drive |
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241 | // i.e. we cannot check for the existence of the database file |
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242 | } |
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243 | else if (GB_size_of_file(file) <= 0) { |
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244 | if (strncmp(arb_tcp_env, "ARB_NAME_SERVER", 15) == 0) { |
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245 | char *dir = ARB_strdup(file); |
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246 | char *lastSlash = strrchr(dir, '/'); |
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247 | |
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248 | if (lastSlash) { |
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249 | lastSlash[0] = 0; // cut off file |
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250 | { |
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251 | const char *copy_cmd = GBS_global_string("cp %s/names.dat.template %s", dir, file); |
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252 | error = GBK_system(copy_cmd); |
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253 | } |
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254 | if (!error && GB_size_of_file(file) <= 0) { |
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255 | error = GBS_global_string("Cannot copy nameserver template (%s/names.dat.template missing?)", dir); |
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256 | } |
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257 | } |
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258 | else { |
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259 | error = GBS_global_string("Can't determine directory from '%s'", dir); |
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260 | } |
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261 | free(dir); |
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262 | } |
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263 | else if (strncmp(arb_tcp_env, "ARB_PT_SERVER", 13) == 0) { |
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264 | const char *nameOnly = strrchr(file, '/'); |
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265 | if (!nameOnly) nameOnly = file; |
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266 | |
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267 | error = GBS_global_string("PT_server '%s' has not been created yet.\n" |
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268 | " To create it follow these steps:\n" |
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269 | " 1. Start ARB on the whole database you want to use for probe match/design\n" |
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270 | " 2. Go to ARB_NTREE/Probes/PT_SERVER Admin\n" |
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271 | " 3. Select '%s' and press BUILD SERVER\n" |
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272 | " 4. Wait (up to hours, depending on your DB size)\n" |
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273 | " 5. Meanwhile read the help file: PT_SERVER: What Why and How", |
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274 | file, nameOnly); |
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275 | } |
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276 | else { |
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277 | error = GBS_global_string("The file '%s' is missing. \nUnable to start %s", file, arb_tcp_env); |
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278 | } |
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279 | } |
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280 | } |
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281 | |
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282 | if (!error) { |
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283 | error = arb_wait_for_server(arb_tcp_env, tcp_id, magic_number, &glservercntrl, 20); |
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284 | |
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285 | if (!error) { |
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286 | if (!glservercntrl.link) { // couldn't start server |
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287 | error = // | |
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288 | "ARB has problems to start a server! Possible reasons may be one\n" |
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289 | "or several of the following list:\n" |
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290 | "- the tcp_id (socket number) is already used by another program\n" |
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291 | " (doesnt apply to user-specific PTSERVERs; check $ARBHOME/lib/arb_tcp.dat versus /etc/services)\n" |
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292 | "- the server exited with error or has crashed.\n" |
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293 | " In case of PTSERVER, the failure might be caused by:\n" |
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294 | " - missing database in $ARBHOME/lib/pts/* (solution: update ptserver database)\n" |
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295 | " - wrong permissions of $ARBHOME/lib/pts/* (no read access)\n" |
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296 | " If you recently installed a new arb version, arb will continue\n" |
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297 | " to use your previous 'arb_tcp.dat', which might be out-of-date.\n" |
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298 | " Backup and remove it, then restart ARB. If it works now,\n" |
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299 | " compare your old 'arb_tcp.dat' with the new one for changes.\n" |
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300 | "- When using remote servers: login or network problems\n" |
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301 | ; |
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302 | } |
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303 | else { |
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304 | aisc_close(glservercntrl.link, glservercntrl.com); |
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305 | glservercntrl.link = NULp; |
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306 | } |
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307 | } |
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308 | } |
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309 | } |
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310 | |
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311 | arb_assert(!GB_have_error()); |
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312 | return error; |
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313 | } |
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314 | |
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315 | GB_ERROR arb_look_and_kill_server(int magic_number, const char *arb_tcp_env) { |
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316 | const char *tcp_id; |
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317 | GB_ERROR error = NULp; |
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318 | |
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319 | if (!(tcp_id = GBS_read_arb_tcp(arb_tcp_env))) { |
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320 | error = GB_await_error(); |
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321 | } |
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322 | else { |
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323 | const char *server = strchr(tcp_id, 0)+1; |
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324 | |
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325 | glservercntrl.link = aisc_open(tcp_id, glservercntrl.com, magic_number, &error); |
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326 | if (glservercntrl.link) { |
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327 | aisc_close(glservercntrl.link, glservercntrl.com); |
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328 | glservercntrl.link = NULp; |
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329 | |
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330 | error = GBK_system(GBS_global_string("%s -kill -T%s &", server, tcp_id)); |
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331 | } |
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332 | else { |
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333 | error = "Server is not running"; |
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334 | } |
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335 | } |
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336 | return error; |
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337 | } |
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338 | |
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339 | void arb_print_server_params() { |
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340 | printf("General server parameters (some maybe unused by this server):\n" |
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341 | " -s<name> sets species name to '<name>'\n" |
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342 | " -e<name> sets extended name to '<name>'\n" |
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343 | " -a<ali> sets alignment to '<ali>'\n" |
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344 | " -d<file> sets default file to '<file>'\n" |
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345 | " -f<field>=<def> sets DB field to '<field>' (using <def> as default)\n" |
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346 | " -r read-only mode\n" |
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347 | " -D<server> sets DB-server to '<server>' [default = ':']\n" |
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348 | " -J<server> sets job-server to '<server>' [default = 'ARB_JOB_SERVER']\n" |
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349 | " -M<server> sets MGR-server to '<server>' [default = 'ARB_MGR_SERVER']\n" |
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350 | " -P<server> sets PT-server to '<server>' [default = 'ARB_PT_SERVER']\n" |
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351 | " -T<[host]:port> sets TCP connection to '<[host]:port>'\n" |
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352 | ); |
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353 | } |
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354 | |
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355 | arb_params *arb_trace_argv(int *argc, const char **argv) { |
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356 | arb_params *erg = ARB_calloc<arb_params>(1); |
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357 | |
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358 | erg->db_server = ARB_strdup(":"); |
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359 | erg->job_server = ARB_strdup("ARB_JOB_SERVER"); |
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360 | erg->mgr_server = ARB_strdup("ARB_MGR_SERVER"); |
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361 | erg->pt_server = ARB_strdup("ARB_PT_SERVER"); |
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362 | |
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363 | int s, d; |
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364 | for (s=d=0; s<*argc; s++) { |
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365 | if (argv[s][0] == '-') { |
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366 | switch (argv[s][1]) { |
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367 | case 's': erg->species_name = ARB_strdup(argv[s]+2); break; |
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368 | case 'e': erg->extended_name = ARB_strdup(argv[s]+2); break; |
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369 | case 'a': erg->alignment = ARB_strdup(argv[s]+2); break; |
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370 | case 'd': erg->default_file = ARB_strdup(argv[s]+2); break; |
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371 | case 'f': { |
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372 | char *eq; |
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373 | erg->field = ARB_strdup(argv[s]+2); |
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374 | |
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375 | eq = strchr(erg->field, '='); |
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376 | if (eq) { |
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377 | erg->field_default = eq+1; |
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378 | eq[0] = 0; |
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379 | } |
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380 | else { |
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381 | erg->field_default = NULp; // this is illegal - error handling done in caller |
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382 | } |
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383 | break; |
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384 | } |
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385 | case 'r': erg->read_only = 1; break; |
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386 | case 'J': freedup(erg->job_server, argv[s]+2); break; |
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387 | case 'D': freedup(erg->db_server, argv[s]+2); break; |
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388 | case 'M': freedup(erg->mgr_server, argv[s]+2); break; |
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389 | case 'P': freedup(erg->pt_server, argv[s]+2); break; |
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390 | case 'T': { |
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391 | const char *ipport = argv[s]+2; |
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392 | if (ipport[0] == ':' && |
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393 | ipport[1] >= '0' && ipport[1] <= '9') { // port only -> assume localhost |
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394 | erg->tcp = GBS_global_string_copy("localhost%s", ipport); |
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395 | } |
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396 | else { |
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397 | erg->tcp = ARB_strdup(ipport); |
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398 | } |
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399 | break; |
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400 | } |
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401 | default: |
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402 | argv[d++] = argv[s]; |
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403 | break; |
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404 | } |
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405 | } |
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406 | else { |
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407 | argv[d++] = argv[s]; |
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408 | } |
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409 | } |
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410 | *argc = d; |
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411 | return erg; |
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412 | } |
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413 | |
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414 | void free_arb_params(arb_params *params) { |
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415 | free(params->species_name); |
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416 | free(params->extended_name); |
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417 | free(params->alignment); |
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418 | free(params->default_file); |
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419 | free(params->field); |
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420 | free(params->job_server); |
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421 | free(params->db_server); |
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422 | free(params->mgr_server); |
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423 | free(params->pt_server); |
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424 | free(params->tcp); |
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425 | |
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426 | free(params); |
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427 | } |
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428 | |
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429 | // -------------------------------------------------------------------------------- |
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430 | |
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431 | #if defined(UNIT_TESTS) |
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432 | |
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433 | // If you need tests in AISC_COM/C/client.c, put them here instead. |
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434 | |
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435 | #include <test_unit.h> |
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436 | |
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437 | void TEST_servercntrl() { |
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438 | // TEST_EXPECT(0); |
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439 | } |
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440 | |
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441 | #endif // UNIT_TESTS |
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442 | |
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