DurableStoreImpl.cc

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00001 /*
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00005  * install, copy or use the software.
00006  * 
00007  * Intel Open Source License 
00008  * 
00009  * Copyright (c) 2005 Intel Corporation. All rights reserved. 
00010  * 
00011  * Redistribution and use in source and binary forms, with or without
00012  * modification, are permitted provided that the following conditions are
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00014  * 
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00018  *   Redistributions in binary form must reproduce the above copyright
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00020  *   documentation and/or other materials provided with the distribution.
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00024  *   this software without specific prior written permission.
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00038 
00039 #include <sys/param.h>
00040 #include <sys/types.h>
00041 #include <sys/stat.h>
00042 #include <errno.h>
00043 #include <unistd.h>
00044 
00045 #include "DurableStore.h"
00046 #include "debug/DebugUtils.h"
00047 #include "serialize/MarshalSerialize.h"
00048 
00049 namespace oasys {
00050 
00051 void
00052 DurableStoreImpl::prune_db_dir(const char* dir, int tidy_wait)
00053 {
00054     char cmd[256];
00055     for (int i = tidy_wait; i > 0; --i) 
00056     {
00057         log_warn("PRUNING CONTENTS OF %s IN %d SECONDS", dir, i);
00058         sleep(1);
00059     }
00060     sprintf(cmd, "/bin/rm -rf %s", dir);
00061     log_notice("tidy option removing directory '%s'", cmd);
00062     system(cmd);
00063 }
00064 
00065 int
00066 DurableStoreImpl::check_db_dir(const char* db_dir, bool* dir_exists)
00067 {
00068     *dir_exists = false;
00069 
00070     struct stat f_stat;
00071     if (stat(db_dir, &f_stat) == -1)
00072     {
00073         if (errno == ENOENT)
00074         {
00075             *dir_exists = false;
00076         }
00077         else 
00078         {
00079             log_err("error trying to stat database directory %s: %s",
00080                     db_dir, strerror(errno));
00081             return DS_ERR;
00082         }
00083     }
00084     else
00085     {
00086         *dir_exists = true;
00087     }
00088 
00089     return 0;
00090 }
00091 
00092 int
00093 DurableStoreImpl::create_db_dir(const char* db_dir)
00094 {
00095     // create database directory
00096     char pwd[PATH_MAX];
00097     
00098     log_notice("creating new database directory %s%s%s",
00099                db_dir[0] == '/' ? "" : getcwd(pwd, PATH_MAX),
00100                db_dir[0] == '/' ? "" : "/",
00101                db_dir);
00102             
00103     if (mkdir(db_dir, 0700) != 0) 
00104     {
00105         log_crit("can't create datastore directory %s: %s",
00106                  db_dir, strerror(errno));
00107         return DS_ERR;
00108     }
00109     return 0;
00110 }
00111 
00112 int
00113 DurableTableImpl::get(const SerializableObject&   key,
00114                       SerializableObject**        data,
00115                       TypeCollection::Allocator_t allocator)
00116 {
00117     (void)key;
00118     (void)data;
00119     (void)allocator;
00120     PANIC("Generic DurableTableImpl get method called for "
00121           "multi-type tables");
00122 }
00123 
00124 size_t
00125 DurableTableImpl::flatten(const SerializableObject& key, 
00126                           u_char* key_buf, size_t size)
00127 {
00128     MarshalSize sizer(Serialize::CONTEXT_LOCAL);
00129     sizer.action(&key);
00130 
00131     if (sizer.size() > size)
00132     {
00133         return 0;
00134     }
00135 
00136     Marshal marshaller(Serialize::CONTEXT_LOCAL, key_buf, 256);
00137     marshaller.action(&key);
00138     
00139     return sizer.size();
00140 }
00141 
00142 } // namespace oasys

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