Class: Yast::SnapperClass
- Inherits:
-
Module
- Object
- Module
- Yast::SnapperClass
- Defined in:
- ../../src/modules/Snapper.rb
Instance Method Summary (collapse)
-
- (Object) CreateSnapshot(args)
Create new snapshot Return true on success.
-
- (Object) DeleteSnapshot(args)
Delete existing snapshot Return true on success.
-
- (Object) GetFileFullPath(file)
Return the full path to the given file from currently selected configuration (subvolume) GetFileFullPath (“/testfile.txt”) -> /abc/testfile.txt for /abc subvolume.
-
- (Object) GetFileMode(file)
Return the given file mode as octal number.
-
- (Object) GetFileModification(file, old, new)
Describe what was done with given file between given snapshots - when new is 0, meaning is 'current system'.
-
- (Object) GetSnapshotPath(snapshot_num)
Return the path to given snapshot.
-
- (Object) InitializeSnapper(config)
Initialize snapper agent Return true on success.
- - (Object) LastSnapperErrorMap
- - (Object) main
-
- (Object) ModifySnapshot(args)
Modify existing snapshot Return true on success.
-
- (Object) Read
Read all snapper settings.
- - (Object) ReadConfigs
-
- (Object) ReadModifiedFilesIndex(from, to)
Return map of files modified between given snapshots Return structure has just one level, and maps each modified file to it's modification map.
-
- (Object) ReadModifiedFilesMap(from, to)
Return map of files modified between given snapshots Map is recursively describing the filesystem structure; helps to build Tree widget contents.
-
- (Object) ReadSnapshots
Read the list of snapshots.
-
- (Object) RestoreFiles(snapshot_num, files)
Copy given files from selected snapshot to current filesystem.
Instance Method Details
- (Object) CreateSnapshot(args)
Create new snapshot Return true on success
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# File '../../src/modules/Snapper.rb', line 293 def CreateSnapshot(args) args = deep_copy(args) success = Convert.to_boolean(SCR.Execute(path(".snapper.create"), args)) if !success err_map = LastSnapperErrorMap() type = Ops.get_string(err_map, "type", "") details = _("Reason not known.") if type == "wrong_snapshot_type" details = _("Wrong snapshot type given.") elsif type == "pre_not_given" details = _("'Pre' snapshot was not given.") elsif type == "pre_not_found" details = _("Given 'Pre' snapshot was not found.") end Builtins.y2warning("creating failed with '%1'", err_map) # error popup Report.Error( Builtins.sformat(_("Failed to create new snapshot:\n%1"), details) ) end success end |
- (Object) DeleteSnapshot(args)
Delete existing snapshot Return true on success
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# File '../../src/modules/Snapper.rb', line 254 def DeleteSnapshot(args) args = deep_copy(args) success = Convert.to_boolean(SCR.Execute(path(".snapper.delete"), args)) if !success err_map = LastSnapperErrorMap() type = Ops.get_string(err_map, "type", "") details = _("Reason not known.") details = _("Snapshot was not found.") if type == "not_found" Builtins.y2warning("deleting failed with '%1'", err_map) # error popup Report.Error( Builtins.sformat(_("Failed to delete snapshot:\n%1"), details) ) end success end |
- (Object) GetFileFullPath(file)
Return the full path to the given file from currently selected configuration (subvolume) GetFileFullPath ("/testfile.txt") -> /abc/testfile.txt for /abc subvolume
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# File '../../src/modules/Snapper.rb', line 99 def GetFileFullPath(file) Ops.get_string( @snapshots, [@selected_snapshot_index, "files_index", file, "full_path"], file ) end |
- (Object) GetFileMode(file)
Return the given file mode as octal number
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# File '../../src/modules/Snapper.rb', line 357 def GetFileMode(file) out = Convert.to_map( SCR.Execute( path(".target.bash_output"), Builtins.sformat("/bin/stat --printf=%%a '%1'", String.Quote(file)) ) ) mode = Ops.get_string(out, "stdout", "") return 644 if mode == nil || mode == "" Builtins.tointeger(mode) end |
- (Object) GetFileModification(file, old, new)
Describe what was done with given file between given snapshots - when new is 0, meaning is 'current system'
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# File '../../src/modules/Snapper.rb', line 109 def GetFileModification(file, old, new) ret = {} file1 = Builtins.sformat("%1%2", GetSnapshotPath(old), file) file2 = Builtins.sformat("%1%2", GetSnapshotPath(new), file) file2 = GetFileFullPath(file) if new == 0 Builtins.y2milestone("comparing '%1' and '%2'", file1, file2) if FileUtils.Exists(file1) && FileUtils.Exists(file2) status = ["no_change"] out = Convert.to_map( SCR.Execute( path(".target.bash_output"), Builtins.sformat( "/usr/bin/diff -u '%1' '%2'", String.Quote(file1), String.Quote(file2) ) ) ) if Ops.get_string(out, "stderr", "") != "" Builtins.y2warning("out: %1", out) Ops.set(ret, "diff", Ops.get_string(out, "stderr", "")) # the file diff elsif Ops.get(out, "stdout") != "" status = ["diff"] Ops.set(ret, "diff", Ops.get_string(out, "stdout", "")) end # check mode and ownerships out = Convert.to_map( SCR.Execute( path(".target.bash_output"), Builtins.sformat( "ls -ld -- '%1' '%2' | cut -f 1,3,4 -d ' '", String.Quote(file1), String.Quote(file2) ) ) ) parts = Builtins.splitstring(Ops.get_string(out, "stdout", ""), " \n") if Ops.get(parts, 0, "") != Ops.get(parts, 3, "") status = Builtins.add(status, "mode") Ops.set(ret, "mode1", Ops.get(parts, 0, "")) Ops.set(ret, "mode2", Ops.get(parts, 3, "")) end if Ops.get(parts, 1, "") != Ops.get(parts, 4, "") status = Builtins.add(status, "user") Ops.set(ret, "user1", Ops.get(parts, 1, "")) Ops.set(ret, "user2", Ops.get(parts, 4, "")) end if Ops.get(parts, 2, "") != Ops.get(parts, 5, "") status = Builtins.add(status, "group") Ops.set(ret, "group1", Ops.get(parts, 2, "")) Ops.set(ret, "group2", Ops.get(parts, 5, "")) end Ops.set(ret, "status", status) elsif FileUtils.Exists(file1) Ops.set(ret, "status", ["removed"]) elsif FileUtils.Exists(file2) Ops.set(ret, "status", ["created"]) else Ops.set(ret, "status", ["none"]) end deep_copy(ret) end |
- (Object) GetSnapshotPath(snapshot_num)
Return the path to given snapshot
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# File '../../src/modules/Snapper.rb', line 82 def GetSnapshotPath(snapshot_num) ret = Convert.to_string( SCR.Read(path(".snapper.path"), { "num" => snapshot_num }) ) if ret == nil ret = "" # popup error Report.Error( Builtins.sformat(_("Snapshot '%1' was not found."), snapshot_num) ) end ret end |
- (Object) InitializeSnapper(config)
Initialize snapper agent Return true on success
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# File '../../src/modules/Snapper.rb', line 226 def InitializeSnapper(config) init = Convert.to_boolean( SCR.Execute(path(".snapper"), { "config" => config }) ) if !init err_map = LastSnapperErrorMap() type = Ops.get_string(err_map, "type", "") details = _("Reason not known.") if type == "config_not_found" details = _("Configuration not found.") elsif type == "config_invalid" details = _("Configuration is not valid.") end Builtins.y2warning("init failed with '%1'", err_map) # error popup Report.Error( Builtins.sformat( _("Failed to initialize snapper library:\n%1"), details ) ) end init end |
- (Object) LastSnapperErrorMap
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# File '../../src/modules/Snapper.rb', line 199 def LastSnapperErrorMap Convert.to_map(SCR.Read(path(".snapper.error"))) end |
- (Object) main
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# File '../../src/modules/Snapper.rb', line 34 def main Yast.import "UI" textdomain "snapper" Yast.import "FileUtils" Yast.import "Label" Yast.import "Progress" Yast.import "Report" Yast.import "String" # global list of all snapshot @snapshots = [] @selected_snapshot = {} # mapping of snapshot number to index in snapshots list @id2index = {} # index to snapshots list @selected_snapshot_index = 0 # list of configurations @configs = ["root"] @current_config = "root" end |
- (Object) ModifySnapshot(args)
Modify existing snapshot Return true on success
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# File '../../src/modules/Snapper.rb', line 274 def ModifySnapshot(args) args = deep_copy(args) success = Convert.to_boolean(SCR.Execute(path(".snapper.modify"), args)) if !success err_map = LastSnapperErrorMap() type = Ops.get_string(err_map, "type", "") details = _("Reason not known.") Builtins.y2warning("modification failed with '%1'", err_map) # error popup Report.Error( Builtins.sformat(_("Failed to modify snapshot:\n%1"), details) ) end success end |
- (Object) Read
Read all snapper settings
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# File '../../src/modules/Snapper.rb', line 320 def Read # Snapper read dialog caption caption = _("Initializing Snapper") steps = 2 # We do not set help text here, because it was set outside Progress.New( caption, " ", steps, [ # Progress stage 1/3 _("Read the list of snapshots") ], [ # Progress step 1/3 _("Reading the database..."), # Progress finished _("Finished") ], "" ) Progress.NextStage ReadConfigs() return false if !InitializeSnapper(@current_config) ReadSnapshots() Progress.NextStage true end |
- (Object) ReadConfigs
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# File '../../src/modules/Snapper.rb', line 204 def ReadConfigs @configs = Convert.convert( SCR.Read(path(".snapper.configs")), :from => "any", :to => "list <string>" ) if @configs == nil # error popup Report.Error(_("File /etc/sysconfig/snapper is not available.")) @configs = ["root"] end if !Builtins.contains(@configs, "root") && Ops.greater_than(Builtins.size(@configs), 0) @current_config = Ops.get(@configs, 0, "root") end deep_copy(@configs) end |
- (Object) ReadModifiedFilesIndex(from, to)
Return map of files modified between given snapshots Return structure has just one level, and maps each modified file to it's modification map
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# File '../../src/modules/Snapper.rb', line 63 def ReadModifiedFilesIndex(from, to) Convert.convert( SCR.Read(path(".snapper.diff_index"), { "from" => from, "to" => to }), :from => "any", :to => "map <string, map>" ) end |
- (Object) ReadModifiedFilesMap(from, to)
Return map of files modified between given snapshots Map is recursively describing the filesystem structure; helps to build Tree widget contents
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# File '../../src/modules/Snapper.rb', line 73 def ReadModifiedFilesMap(from, to) Convert.convert( SCR.Read(path(".snapper.diff_tree"), { "from" => from, "to" => to }), :from => "any", :to => "map <string, map>" ) end |
- (Object) ReadSnapshots
Read the list of snapshots
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# File '../../src/modules/Snapper.rb', line 178 def ReadSnapshots @snapshots = [] snapshot_maps = Convert.convert( SCR.Read(path(".snapper.snapshots")), :from => "any", :to => "list <map>" ) snapshot_maps = [] if snapshot_maps == nil i = 0 Builtins.foreach(snapshot_maps) do |snapshot| id = Ops.get_integer(snapshot, "num", 0) next if id == 0 # ignore the 'current system' Ops.set(snapshot, "name", Builtins.tostring(id)) Builtins.y2debug("snapshot data: %1", snapshot) @snapshots = Builtins.add(@snapshots, snapshot) Ops.set(@id2index, id, i) i = Ops.add(i, 1) end true end |
- (Object) RestoreFiles(snapshot_num, files)
Copy given files from selected snapshot to current filesystem
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# File '../../src/modules/Snapper.rb', line 373 def RestoreFiles(snapshot_num, files) files = deep_copy(files) ret = true Builtins.y2milestone("going to restore files %1", files) UI.OpenDialog( Opt(:decorated), HBox( HSpacing(1.5), VBox( HSpacing(60), # label for log window LogView(Id(:log), _("Restoring Files..."), 8, 0), ProgressBar(Id(:progress), "", Builtins.size(files), 0), PushButton(Id(:ok), Label.OKButton) ), HSpacing(1.5) ) ) UI.ChangeWidget(Id(:ok), :Enabled, false) progress = 0 Builtins.foreach(files) do |file| UI.ChangeWidget(Id(:progress), :Value, progress) orig = Ops.add(GetSnapshotPath(snapshot_num), file) full_path = GetFileFullPath(file) dir = Builtins.substring( full_path, 0, Builtins.findlastof(full_path, "/") ) if !FileUtils.Exists(orig) SCR.Execute( path(".target.bash"), Builtins.sformat("/bin/rm -rf -- '%1'", String.Quote(full_path)) ) Builtins.y2milestone("removing '%1' from system", full_path) # log entry (%1 is file name) UI.ChangeWidget( Id(:log), :LastLine, Builtins.sformat(_("Deleted %1\n"), full_path) ) elsif FileUtils.CheckAndCreatePath(dir) Builtins.y2milestone( "copying '%1' to '%2' (dir: %3)", orig, file, dir ) if FileUtils.IsDirectory(orig) == true stat = Convert.to_map(SCR.Read(path(".target.stat"), orig)) if !FileUtils.Exists(full_path) SCR.Execute(path(".target.mkdir"), full_path) end SCR.Execute( path(".target.bash"), Builtins.sformat( "/bin/chown -- %1:%2 '%3'", Ops.get_integer(stat, "uid", 0), Ops.get_integer(stat, "gid", 0), String.Quote(full_path) ) ) SCR.Execute( path(".target.bash"), Builtins.sformat( "/bin/chmod -- %1 '%2'", GetFileMode(orig), String.Quote(full_path) ) ) else SCR.Execute( path(".target.bash"), Builtins.sformat( "/bin/cp -a -- '%1' '%2'", String.Quote(orig), String.Quote(full_path) ) ) end UI.ChangeWidget(Id(:log), :LastLine, Ops.add(full_path, "\n")) else Builtins.y2milestone( "failed to copy file '%1' to '%2' (dir: %3)", orig, full_path, dir ) # log entry (%1 is file name) UI.ChangeWidget( Id(:log), :LastLine, Builtins.sformat(_("%1 skipped\n"), full_path) ) end Builtins.sleep(100) progress = Ops.add(progress, 1) end UI.ChangeWidget(Id(:progress), :Value, progress) UI.ChangeWidget(Id(:ok), :Enabled, true) UI.UserInput UI.CloseDialog ret end |