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Add persistent history to application
The application saves the bins and errors history state every 10 minutes and when disconecting from the device. The storage path is configurable using the new command-line option "-state-dir", which also allows to turn this feature off.
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| Original file line number | Diff line number | Diff line change |
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@@ -8,4 +8,4 @@ package gui | |
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| const Enabled = false | ||
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| func Run() {} | ||
| func Run(stateDir string) {} | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| // This Source Code Form is subject to the terms of the Mozilla Public | ||
| // License, v. 2.0. If a copy of the MPL was not distributed with this | ||
| // file, You can obtain one at https://mozilla.org/MPL/2.0/. | ||
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| package common | ||
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| import ( | ||
| "compress/gzip" | ||
| "fmt" | ||
| "io" | ||
| "os" | ||
| "path/filepath" | ||
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| "3e8.eu/go/dsl/history" | ||
| ) | ||
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| func (c *Client) readStateFile(filename string, readFunc func(r io.Reader) error) (err error) { | ||
| file, err := os.Open(filepath.Join(c.stateDir, filename)) | ||
| if err != nil { | ||
| return | ||
| } | ||
| defer func() { | ||
| closeErr := file.Close() | ||
| if err == nil { | ||
| err = closeErr | ||
| } | ||
| }() | ||
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| reader, err := gzip.NewReader(file) | ||
| if err != nil { | ||
| return | ||
| } | ||
| defer func() { | ||
| closeErr := reader.Close() | ||
| if err == nil { | ||
| err = closeErr | ||
| } | ||
| }() | ||
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| err = readFunc(reader) | ||
| return | ||
| } | ||
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| func (c *Client) writeStateFile(filename string, writeFunc func(w io.Writer) error) (err error) { | ||
| err = os.MkdirAll(c.stateDir, os.ModePerm) | ||
| if err != nil { | ||
| return | ||
| } | ||
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| file, err := os.Create(filepath.Join(c.stateDir, filename)) | ||
| if err != nil { | ||
| return | ||
| } | ||
| defer func() { | ||
| closeErr := file.Close() | ||
| if err == nil { | ||
| err = closeErr | ||
| } | ||
| }() | ||
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| writer := gzip.NewWriter(file) | ||
| defer func() { | ||
| closeErr := writer.Close() | ||
| if err == nil { | ||
| err = closeErr | ||
| } | ||
| }() | ||
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| err = writeFunc(writer) | ||
| return | ||
| } | ||
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| func (c *Client) loadHistory(bins *history.Bins, errors *history.Errors) { | ||
| if c.stateDir == "" { | ||
| return | ||
| } | ||
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| err := c.readStateFile("bins.dat.gz", bins.Load) | ||
| if err != nil && !os.IsNotExist(err) { | ||
| fmt.Println("failed to load bins history:", err) | ||
| } | ||
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| err = c.readStateFile("errors.dat.gz", errors.Load) | ||
| if err != nil && !os.IsNotExist(err) { | ||
| fmt.Println("failed to load errors history:", err) | ||
| } | ||
| } | ||
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| func (c *Client) saveHistory(bins *history.Bins, errors *history.Errors) { | ||
| if c.stateDir == "" { | ||
| return | ||
| } | ||
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| err := c.writeStateFile("bins.dat.gz", bins.Save) | ||
| if err != nil { | ||
| fmt.Println("failed to save bins history:", err) | ||
| } | ||
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| err = c.writeStateFile("errors.dat.gz", errors.Save) | ||
| if err != nil { | ||
| fmt.Println("failed to save errors history:", err) | ||
| } | ||
| } |
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