octopi/library/tentacles/recursive_file_copy.cpp

   1 /*****************************************************************************\
   2 *                                                                             *
   3 *  Name   : recursive_file_copy                                               *
   4 *  Author : Chris Koeritz                                                     *
   5 *                                                                             *
   6 *******************************************************************************
   7 * Copyright (c) 2005-$now By Author.  This program is free software; you can  *
   8 * redistribute it and/or modify it under the terms of the GNU General Public  *
   9 * License as published by the Free Software Foundation; either version 2 of   *
  10 * the License or (at your option) any later version.  This is online at:      *
  11 *     http://www.fsf.org/copyleft/gpl.html                                    *
  12 * Please send any updates to: fred@gruntose.com                               *
  13 \*****************************************************************************/
  14
  15 #include "file_transfer_infoton.h"
  16 #include "file_transfer_tentacle.h"
  17 #include "recursive_file_copy.h"
  18
  19 #include <application/application_shell.h>
  20 #include <basis/guards.h>
  21 #include <filesystem/directory.h>
  22 #include <filesystem/directory_tree.h>
  23 #include <filesystem/filename.h>
  24 #include <filesystem/filename_list.h>
  25 #include <filesystem/heavy_file_ops.h>
  26 #include <filesystem/huge_file.h>
  27 #include <loggers/program_wide_logger.h>
  28 #include <octopus/entity_defs.h>
  29 #include <octopus/octopus.h>
  30 #include <structures/static_memory_gremlin.h>
  31 #include <textual/string_manipulation.h>
  32
  33 using namespace application;
  34 using namespace basis;
  35 using namespace filesystem;
  36 using namespace loggers;
  37 using namespace structures;
  38 using namespace textual;
  39
  40 namespace octopi {
  41
  42 #define FAKE_HOSTNAME "internal_fake_host"
  43
  44 #undef LOG
  45 #define LOG(s) CLASS_EMERGENCY_LOG(program_wide_logger::get(), s)
  46 #undef BASE_LOG
  47 #define BASE_LOG(s) EMERGENCY_LOG(program_wide_logger::get(), s)
  48
  49 const int MAX_CHUNK_RFC_COPY_HIER = 1 * MEGABYTE;
  50   // maximum size for each transfer chunk.
  51
  52 const int EXPECTED_MAXIMUM_TRANSFER_TIME = 10 * HOUR_ms;
  53   // how long do we allow the scanned file lists to stay relevant.
  54   // we allow it a long time, since this is a copy and not an active
  55   // synchronization.
  56
  57 recursive_file_copy::~recursive_file_copy() {}
  58
  59 const char *recursive_file_copy::outcome_name(const outcome &to_name)
  60 { return common::outcome_name(to_name); }
  61
  62 #define RETURN_ERROR_RFC(msg, err) { \
  63   LOG(msg); \
  64   return err; \
  65 }
  66
  67 outcome recursive_file_copy::copy_hierarchy(int transfer_mode,
  68   const astring &source_dir, const astring &target_dir,
  69   const string_array &includes, const astring &source_start)
  70 {
  71   FUNCDEF("copy_hierarchy");
  72
  73 /*
  74   string_array includes;
  75   if (_global_argc >= 5) {
  76     for (int i = 4; i < _global_argc; i++) {
  77       includes += _global_argv[i];
  78     }
  79   }
  80 */
  81
  82   astring source_root = "snootums";
  83   if (source_start.t()) {
  84     source_root += filename::default_separator() + source_start;
  85   }
  86
  87   octopus ring_leader(FAKE_HOSTNAME, 10 * MEGABYTE);
  88   file_transfer_tentacle *tran = new file_transfer_tentacle
  89       (MAX_CHUNK_RFC_COPY_HIER, (file_transfer_tentacle::transfer_modes)transfer_mode);
  90   ring_leader.add_tentacle(tran);
  91
  92   outcome add_ret = tran->add_correspondence("snootums", source_dir,
  93       EXPECTED_MAXIMUM_TRANSFER_TIME);
  94   if (add_ret != tentacle::OKAY)
  95     RETURN_ERROR_RFC("failed to add the correspondence", NOT_FOUND);
  96
  97   file_transfer_infoton *initiate = new file_transfer_infoton;
  98   initiate->_request = true;
  99   initiate->_command = file_transfer_infoton::TREE_COMPARISON;
 100   initiate->_src_root = source_root;
 101   initiate->_dest_root = target_dir;
 102   directory_tree target_area(target_dir);
 103 //hmmm: simple asset counting debugging in calculate would be nice too.
 104   target_area.calculate( !(transfer_mode & file_transfer_tentacle::COMPARE_CONTENT_SAMPLE) );
 105   initiate->package_tree_info(target_area, includes);
 106
 107   octopus_entity ent = ring_leader.issue_identity();
 108   octopus_request_id req_id(ent, 1);
 109   outcome start_ret = ring_leader.evaluate(initiate, req_id);
 110   if (start_ret != tentacle::OKAY)
 111     RETURN_ERROR_RFC("failed to start the comparison", NONE_READY);
 112
 113   file_transfer_infoton *reply_from_init
 114       = (file_transfer_infoton *)ring_leader.acquire_specific_result(req_id);
 115   if (!reply_from_init)
 116     RETURN_ERROR_RFC("no response to tree compare start", NONE_READY);
 117
 118   filename_list diffs;
 119   byte_array pack_copy = reply_from_init->_packed_data;
 120   if (!diffs.unpack(pack_copy)) {
 121     RETURN_ERROR_RFC("could not unpack filename list!", GARBAGE);
 122   }
 123 //  LOG(astring("got list of diffs:\n") + diffs.text_form());
 124
 125   octopus client_spider(FAKE_HOSTNAME, 10 * MEGABYTE);
 126   file_transfer_tentacle *tran2 = new file_transfer_tentacle
 127       (MAX_CHUNK_RFC_COPY_HIER, (file_transfer_tentacle::transfer_modes)transfer_mode);
 128   tran2->register_file_transfer(ent, source_root, target_dir, includes);
 129   client_spider.add_tentacle(tran2);
 130
 131   octopus_request_id resp_id(ent, 2);
 132   outcome ini_resp_ret = client_spider.evaluate(reply_from_init, resp_id);
 133   if (ini_resp_ret != tentacle::OKAY)
 134     RETURN_ERROR_RFC("failed to process the start response!", FAILURE);
 135
 136   infoton *junk = client_spider.acquire_specific_result(resp_id);
 137   if (junk)
 138     RETURN_ERROR_RFC("got a response we shouldn't have!", FAILURE);
 139
 140   astring current_file;  // what file is in progress right now?
 141
 142   int iter = 0;
 143   while (true) {
 144 LOG(a_sprintf("ongoing chunk %d", ++iter));
 145
 146     // keep going until we find a broken reply.
 147     file_transfer_infoton *ongoing = new file_transfer_infoton;
 148     ongoing->_request = true;
 149     ongoing->_command = file_transfer_infoton::PLACE_FILE_CHUNKS;
 150     ongoing->_src_root = source_root;
 151     ongoing->_dest_root = target_dir;
 152
 153     octopus_request_id chunk_id(ent, iter + 10);
 154     outcome place_ret = ring_leader.evaluate(ongoing, chunk_id);
 155     if (place_ret != tentacle::OKAY)
 156       RETURN_ERROR_RFC("failed to run ongoing transfer", FAILURE);
 157
 158     file_transfer_infoton *reply = (file_transfer_infoton *)ring_leader
 159          .acquire_specific_result(chunk_id);
 160     if (!reply)
 161       RETURN_ERROR_RFC("failed to get ongoing transfer reply", NONE_READY);
 162
 163     if (!reply->_packed_data.length()) {
 164       BASE_LOG(astring("finished transfer from \"") + source_dir
 165           + "\" to \"" + target_dir + "\"");
 166       break;
 167     }
 168
 169     byte_array copy = reply->_packed_data;
 170     while (copy.length()) {
 171       file_time empty;
 172       file_transfer_header head(empty);
 173       if (!head.unpack(copy))
 174         RETURN_ERROR_RFC("failed to unpack header", GARBAGE);
 175 //LOG(a_sprintf("size in array: %d", copy.length()));
 176       if (copy.length() < head._length)
 177         RETURN_ERROR_RFC("not enough length in array", GARBAGE);
 178 //hmmm: are we doing nothing here besides validating that we GOT something in the header?
 179       copy.zap(0, head._length - 1);
 180 //LOG(a_sprintf("size in array now: %d", copy.length()));
 181
 182 //hmmm: if logging, then...
 183       BASE_LOG(head.readable_text_form());
 184     }
 185     if (copy.length())
 186       RETURN_ERROR_RFC("still had data in array", GARBAGE);
 187
 188     octopus_request_id resp_id(ent, iter + 11);
 189     outcome resp_ret = client_spider.evaluate(reply, resp_id);
 190     if (resp_ret != tentacle::OKAY)
 191       RETURN_ERROR_RFC("failed to process the transfer reply!", FAILURE);
 192   }
 193
 194   return OKAY;
 195 }
 196
 197 } //namespace.
 198
 199