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Begin to implement CLI: implement listing, add help, add create stub

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This commit is contained in:
Vitaliy Filippov
2021-11-06 14:32:19 +03:00
parent ffb06536ff
commit 8e445ddc9a
8 changed files with 405 additions and 18 deletions
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src/cli.cpp
+54 -14
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@@ -28,10 +28,24 @@ json11::Json::object cli_tool_t::parse_args(int narg, const char *args[])
{
help();
}
else if (args[i][0] == '-' && args[i][1] == 'l')
{
cfg["long"] = "1";
}
else if (args[i][0] == '-' && args[i][1] == 'n')
{
cfg["count"] = args[++i];
}
else if (args[i][0] == '-' && args[i][1] == 'i')
{
cfg["interactive"] = "1";
}
else if (args[i][0] == '-' && args[i][1] == '-')
{
const char *opt = args[i]+2;
cfg[opt] = !strcmp(opt, "json") || !strcmp(opt, "wait-list") || i == narg-1 ? "1" : args[++i];
cfg[opt] = i == narg-1 || !strcmp(opt, "json") || !strcmp(opt, "wait-list") ||
!strcmp(opt, "long") || !strcmp(opt, "writers-stopped") && strcmp("1", args[i+1]) != 0
? "1" : args[++i];
}
else
{
@@ -54,35 +68,54 @@ void cli_tool_t::help()
{
printf(
"Vitastor command-line tool\n"
"(c) Vitaliy Filippov, 2019+ (VNPL-1.1)\n\n"
"(c) Vitaliy Filippov, 2019+ (VNPL-1.1)\n"
"\n"
"USAGE:\n"
"%s ls [-l]\n"
" List existing images. Also report provisioned and allocated size if -l is specified.\n"
"\n"
"%s create --size <size> [--parent <parent_name>[@<snapshot>]] <name>\n"
" Create an image. You may use K/M/G/T suffixes for <size>. If --parent is specified,\n"
" a copy-on-write image clone is created. Parent must be a snapshot (readonly image).\n"
"\n"
"%s snap-create <name>@<snapshot>\n"
" Create a snapshot of image <name>. May be used live if only a single writer is active.\n"
"\n"
"%s set <name> [--size <size>] [--readonly | --readwrite]\n"
" Resize image or change its readonly status. Images with children can't be made read-write.\n"
"\n"
"%s top [-n <MAX_COUNT>] [-i]\n"
" Disable image list sorted by I/O load, interactive if -i specified.\n"
"\n"
"%s rm [OPTIONS] <from> [<to>] [--writers-stopped]\n"
" Remove <from> or all layers between <from> and <to> (<to> must be a child of <from>),\n"
" rebasing all their children accordingly. --writers-stopped allows merging to be a bit\n"
" more effective in case of a single 'slim' read-write child and 'fat' removed parent:\n"
" the child is merged into parent in that case and parent is renamed to child.\n"
" In other cases parent layers are always merged into children.\n"
"\n"
"%s flatten [OPTIONS] <layer>\n"
" Flatten a layer, i.e. merge data and detach it from parents.\n"
"\n"
"%s rm-data [OPTIONS] --pool <pool> --inode <inode> [--wait-list]\n"
" Remove inode data without changing metadata.\n"
" --wait-list means first retrieve objects listings and then remove it.\n"
" --wait-list requires more memory, but allows to show correct stats.\n"
" --wait-list requires more memory, but allows to show correct removal progress.\n"
"\n"
"%s merge-data [OPTIONS] <from> <to> [--target <target>]\n"
" Merge layer data without changing metadata. Merge <from>..<to> to <target>.\n"
" <to> must be a child of <from> and <target> may be one of the layers between\n"
" <from> and <to>, including <from> and <to>.\n"
"\n"
"%s flatten [OPTIONS] <layer>\n"
" Flatten a layer, i.e. merge data and detach it from parents\n"
"\n"
"%s rm [OPTIONS] <from> [<to>] [--writers-stopped 1]\n"
" Remove <from> or all layers between <from> and <to> (<to> must be a child of <from>),\n"
" rebasing all their children accordingly. One of deleted parents may be renamed to one\n"
" of children \"to be rebased\", but only if that child itself is readonly or if\n"
" --writers-stopped 1 is specified\n"
"\n"
"OPTIONS (global):\n"
" --etcd_address <etcd_address>\n"
" --iodepth N Send N operations in parallel to each OSD when possible (default 32)\n"
" --parallel_osds M Work with M osds in parallel when possible (default 4)\n"
" --progress 1|0 Report progress (default 1)\n"
" --cas 1|0 Use online CAS writes when possible (default auto)\n"
" --json JSON output\n"
,
exe_name, exe_name, exe_name, exe_name
exe_name, exe_name, exe_name, exe_name, exe_name, exe_name, exe_name, exe_name, exe_name
);
exit(0);
}
@@ -176,6 +209,11 @@ void cli_tool_t::run(json11::Json cfg)
fprintf(stderr, "command is missing\n");
exit(1);
}
else if (cmd[0] == "ls")
{
// List images
action_cb = start_ls(cfg);
}
else if (cmd[0] == "rm-data")
{
// Delete inode data
@@ -201,6 +239,7 @@ void cli_tool_t::run(json11::Json cfg)
fprintf(stderr, "unknown command: %s\n", cmd[0].string_value().c_str());
exit(1);
}
json_output = cfg["json"].bool_value();
iodepth = cfg["iodepth"].uint64_value();
if (!iodepth)
iodepth = 32;
@@ -236,7 +275,8 @@ void cli_tool_t::run(json11::Json cfg)
while (action_cb != NULL)
{
ringloop->loop();
ringloop->wait();
if (action_cb != NULL)
ringloop->wait();
}
}