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Diffstat (limited to 'main.go')
-rw-r--r--main.go174
1 files changed, 147 insertions, 27 deletions
diff --git a/main.go b/main.go
index 4994116..f3c1196 100644
--- a/main.go
+++ b/main.go
@@ -2,10 +2,15 @@ package main
import (
"bytes"
+ "encoding/csv"
+ "encoding/json"
"flag"
+ "hash/crc32"
+ "io"
"log/slog"
"os"
"os/signal"
+ "strconv"
"strings"
"sync"
"syscall"
@@ -16,8 +21,10 @@ import (
)
var (
- configPath = flag.String("c", "config.json", "Path to the configuration file")
- sigTermChan = make(chan os.Signal, 1)
+ configPath = flag.String("c", "config.json", "Path to the configuration file")
+ sigTermChan = make(chan os.Signal, 1)
+ cacheMapMutex = &sync.RWMutex{}
+ cacheMap = make(map[string]map[uint32]struct{})
)
func main() {
@@ -48,8 +55,10 @@ func main() {
}
converters := make([]converter.Converter, 0, len(cfg.Converters))
- var converterTypes []string
+ converterTypes := make([]string, 0, len(cfg.Converters))
+ converterHashes := make([]uint32, 0, len(cfg.Converters))
for _, converterCfg := range cfg.Converters {
+ converterBytes, _ := json.Marshal(converterCfg)
conv, err := converter.NewConverterMap[converterCfg.Type](&converterCfg)
if err != nil {
slog.Error("fail to initialize converter", slog.String("error", err.Error()))
@@ -57,6 +66,7 @@ func main() {
}
converters = append(converters, conv)
converterTypes = append(converterTypes, converterCfg.Type)
+ converterHashes = append(converterHashes, crc32.ChecksumIEEE(converterBytes))
}
generalLogger := slog.With(slog.String("input_storage", cfg.Input.Storage.Type))
@@ -84,52 +94,134 @@ func main() {
default:
}
+ if cfg.Input.CacheProcessed {
+ cacheFile, err := os.OpenFile(cfg.Input.CacheProcessedCsvPath, os.O_CREATE|os.O_RDONLY, 0644)
+ if err != nil {
+ generalLogger.Error("fail to initialize cache file", slog.String("cache_path", cfg.Input.CacheProcessedCsvPath), slog.String("error", err.Error()))
+ os.Exit(1)
+ }
+ defer cacheFile.Close()
+
+ csvReader := csv.NewReader(cacheFile)
+ for {
+ rec, err := csvReader.Read()
+ if err == io.EOF {
+ break
+ }
+ if err != nil {
+ generalLogger.Error("fail to initialize cache while reading file", slog.String("cache_path", cfg.Input.CacheProcessedCsvPath), slog.String("error", err.Error()))
+ os.Exit(1)
+ }
+ if len(rec) != 2 {
+ generalLogger.Error("fail to initialize cache while reading file", slog.Int("record_length", len(rec)), slog.String("error", "incorrect format: expected '{image-name},{semicolon-separated-processor-hashes}'"))
+ os.Exit(1)
+ }
+ hashes := strings.Split(rec[1], ";")
+ cacheMap[rec[0]] = make(map[uint32]struct{})
+ for _, hash := range hashes {
+ hashUint, err := strconv.ParseUint(hash, 10, 32)
+ if err != nil {
+ generalLogger.Error("fail to initialize cache while reading file", slog.Int("record_length", len(rec)), slog.String("error", err.Error()))
+ }
+ cacheMap[rec[0]][uint32(hashUint)] = struct{}{}
+ }
+ }
+ }
+
+ select {
+ case <-sigTermChan:
+ generalLogger.Info("exiting due to termination signal")
+ os.Exit(130)
+ default:
+ }
+
processSemaphore := make(chan struct{}, cfg.MaxProcessThreads)
queueSemaphore := make(chan struct{}, cfg.MaxPreProcessThreads)
var wg sync.WaitGroup
wg.Add(fileCount)
+ processTerminating := false
+
for i, file := range files {
queueSemaphore <- struct{}{}
- go func(index int, inputName string) {
- fileLogger := generalLogger.With(slog.String("input_path", inputName), slog.Int("file_index", index))
- threadSigTermChannel := make(chan os.Signal, 1)
- signal.Notify(threadSigTermChannel, os.Interrupt, syscall.SIGTERM)
+ select {
+ case <-sigTermChan:
+ generalLogger.Info("exiting due to termination signal")
+ processTerminating = true
+ default:
+ }
+ go func(index int, inputName string, earlyTerminate bool) {
defer func() { <-queueSemaphore; wg.Done() }()
- select {
- case <-threadSigTermChannel:
- fileLogger.Info("exiting due to termination signal")
+ fileLogger := generalLogger.With(slog.String("input_path", inputName), slog.Int("file_index", index))
+
+ if earlyTerminate {
+ fileLogger.Info("skip processing file (process is terminating)")
return
- default:
}
- inputMetadata, err := inputClient.ReadMetadata(inputName)
- if err != nil {
- fileLogger.Warn("fail to read metadata of (supposedly existing) input file", slog.String("error", err.Error()))
- return
+ var inputMetadata *input.MetadataStruct
+
+ id := inputClient.ID(file)
+ cacheMapMutex.Lock()
+ if _, ok := cacheMap[id]; !ok {
+ cacheMap[id] = make(map[uint32]struct{})
}
+ cacheMapMutex.Unlock()
convertersToLaunch := []int{}
for j, conv := range converters {
+ if cfg.Input.CacheProcessed {
+ cacheMapMutex.RLock()
+ if _, ok := cacheMap[id][converterHashes[j]]; ok {
+ cacheMapMutex.RUnlock()
+ fileLogger.Info("skip already processed file (based on cache file containing it and processor)",
+ slog.String("file_id", id),
+ slog.Uint64("conv_hash", uint64(converterHashes[j])),
+ slog.Int("conv_index", j))
+ continue
+ }
+ cacheMapMutex.RUnlock()
+ }
outputName := conv.DeductOutputPath(inputName)
originalInputHash := ""
convLogger := fileLogger.With(slog.String("output_path", outputName), slog.Int("conv_index", j))
- if !cfg.ForceRewrite && !conv.IsMissing(outputName) {
- outputMetadata, err := conv.ReadMetadata(outputName)
+ if inputMetadata == nil {
+ inputMetadata, err = inputClient.ReadMetadata(inputName)
if err != nil {
- convLogger.Warn("fail to read metadata of (supposedly existing) output file", slog.String("error", err.Error()))
- continue
+ fileLogger.Warn("fail to read metadata of (supposedly existing) input file", slog.String("error", err.Error()))
+ return
}
- originalInputHash = outputMetadata.HashOriginal
- if inputMetadata.Hash == originalInputHash {
- convLogger.Info("skip already processed file (based on equal hash)", slog.String("input_hash", inputMetadata.Hash))
+ }
+
+ switch cfg.Converters[j].Output.RewriteOn {
+ case "Never":
+ if !conv.IsMissing(outputName) {
+ convLogger.Info("skip already existing file")
continue
}
+ case "UnequalHashInCache":
+ if !conv.IsMissing(outputName) {
+ outputMetadata, err := conv.ReadMetadata(outputName)
+ if err != nil {
+ convLogger.Warn("fail to read metadata of (supposedly existing) output file", slog.String("error", err.Error()))
+ continue
+ }
+ originalInputHash = outputMetadata.HashOriginal
+ if inputMetadata.Hash == originalInputHash {
+ convLogger.Info("skip already processed file (based on equal hash)", slog.String("input_hash", inputMetadata.Hash))
+ cacheMapMutex.Lock()
+ cacheMap[id][converterHashes[j]] = struct{}{}
+ cacheMapMutex.Unlock()
+ continue
+ }
+ }
+ case "Always":
}
+
convertersToLaunch = append(convertersToLaunch, j)
}
@@ -147,10 +239,14 @@ func main() {
return
}
- fileContent := make([]byte, inputMetadata.Size)
- if _, err = reader.Read(fileContent); err != nil {
+ fileContent, err := io.ReadAll(reader)
+ if err != nil {
fileLogger.Warn("fail to read content of input file", slog.String("error", err.Error()))
return
+ } else if int64(len(fileContent)) != inputMetadata.Size {
+ fileLogger.Warn("the downloaded file seems to be missing some of its content",
+ slog.Int("actual_size_bytes", len(fileContent)),
+ slog.Int64("expected_size_bytes", inputMetadata.Size))
}
reader.Close()
@@ -165,8 +261,11 @@ func main() {
}
convLogger.Info("successfully processed file", slog.String("input_hash", inputMetadata.Hash))
+ cacheMapMutex.Lock()
+ cacheMap[id][converterHashes[convIndex]] = struct{}{}
+ cacheMapMutex.Unlock()
}
- }(i, file)
+ }(i, file, processTerminating)
}
wg.Wait()
@@ -176,7 +275,28 @@ func main() {
generalLogger.Info("exiting due to termination signal")
os.Exit(130)
default:
- generalLogger.Info("all files processed successfully, exiting")
- os.Exit(0)
}
+
+ generalLogger.Info("all files processed successfully")
+
+ if cfg.Input.CacheProcessed {
+ generalLogger.Info("writing cache file")
+ cacheFile, err := os.OpenFile(cfg.Input.CacheProcessedCsvPath, os.O_TRUNC|os.O_CREATE|os.O_WRONLY, 0644)
+ if err != nil {
+ generalLogger.Error("error writing cache into file")
+ } else {
+ for id, hashes := range cacheMap {
+ var hashStrings = make([]string, 0, len(hashes))
+ for hash := range hashes {
+ hashStrings = append(hashStrings, strconv.FormatUint(uint64(hash), 10))
+ }
+ cacheFile.Write([]byte(id))
+ cacheFile.Write([]byte{','})
+ cacheFile.WriteString(strings.Join(hashStrings, ";"))
+ cacheFile.Write([]byte{'\n'})
+ }
+ }
+ }
+
+ os.Exit(0)
}