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Add backfiller for analytics from mongodb (#562)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,124 @@ | ||
| package metrics | ||
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| import ( | ||
| "bufio" | ||
| "encoding/hex" | ||
| "fmt" | ||
| "io" | ||
| "os" | ||
| "strings" | ||
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| "github.com/wormhole-foundation/wormhole-explorer/analytics/prices" | ||
| "github.com/wormhole-foundation/wormhole-explorer/common/logger" | ||
| "go.uber.org/zap" | ||
| ) | ||
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| type LineParser struct { | ||
| converter *VaaConverter | ||
| } | ||
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| // read a csv file with VAAs and convert into a decoded csv file | ||
| // ready to upload to the database | ||
| func RunVaaVolumeFromFile(inputFile, outputFile, pricesFile string) { | ||
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| // build logger | ||
| logger := logger.New("wormhole-explorer-analytics") | ||
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| logger.Info("starting wormhole-explorer-analytics ...") | ||
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| // open input file | ||
| f, err := os.Open(inputFile) | ||
| if err != nil { | ||
| logger.Fatal("opening input file", zap.Error(err)) | ||
| } | ||
| defer f.Close() | ||
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| // create missing tokens file | ||
| missingTokensFile := "missing_tokens.csv" | ||
| fmissingTokens, err := os.Create(missingTokensFile) | ||
| if err != nil { | ||
| logger.Fatal("creating missing tokens file", zap.Error(err)) | ||
| } | ||
| defer fmissingTokens.Close() | ||
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| //open output file for writing | ||
| fout, err := os.Create(outputFile) | ||
| if err != nil { | ||
| logger.Fatal("creating output file", zap.Error(err)) | ||
| } | ||
| defer fout.Close() | ||
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| // init price cache! | ||
| logger.Info("loading historical prices...") | ||
| priceCache := prices.NewCoinPricesCache(pricesFile) | ||
| priceCache.InitCache() | ||
| converter := NewVaaConverter(priceCache) | ||
| lp := NewLineParser(converter) | ||
| logger.Info("loaded historical prices") | ||
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| r := bufio.NewReader(f) | ||
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| c := 0 | ||
| i := 0 | ||
| // read file line by line and send to workpool | ||
| for { | ||
| line, _, err := r.ReadLine() //loading chunk into buffer | ||
| if err != nil { | ||
| if err == io.EOF { | ||
| break | ||
| } | ||
| logger.Fatal("a real error happened here", zap.Error(err)) | ||
| } | ||
| nl, err := lp.ParseLine(line) | ||
| if err != nil { | ||
| //fmt.Printf(",") | ||
| } else { | ||
| c++ | ||
| fout.Write([]byte(nl)) | ||
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| if c == 10000 { | ||
| fmt.Printf(".") | ||
| c = 0 | ||
| i := i + 1 | ||
| if i == 10 { | ||
| fmt.Printf("\n") | ||
| i = 0 | ||
| } | ||
| } | ||
| } | ||
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| } | ||
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| for k := range converter.MissingTokensCounter { | ||
| fmissingTokens.WriteString(fmt.Sprintf("%s,%s,%d\n", k.String(), converter.MissingTokens[k], converter.MissingTokensCounter[k])) | ||
| } | ||
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| logger.Info("missing tokens", zap.Int("count", len(converter.MissingTokens))) | ||
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| logger.Info("finished wormhole-explorer-analytics") | ||
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| } | ||
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| func NewLineParser(converter *VaaConverter) *LineParser { | ||
| return &LineParser{ | ||
| converter: converter, | ||
| } | ||
| } | ||
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| // ParseLine takes a CSV line as input, and generates a line protocol entry as output. | ||
| // | ||
| // The format for InfluxDB line protocol is: vaa,tags fields timestamp | ||
| func (lp *LineParser) ParseLine(line []byte) (string, error) { | ||
|
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| // Parse the VAA and payload | ||
| tt := strings.Split(string(line), ",") | ||
| if len(tt) != 2 { | ||
| return "", fmt.Errorf("expected line to have two tokens, but has %d: %s", len(tt), line) | ||
| } | ||
| vaaBytes, err := hex.DecodeString(tt[1]) | ||
| if err != nil { | ||
| return "", fmt.Errorf("error decoding: %v", err) | ||
| } | ||
|
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| return lp.converter.Convert(vaaBytes) | ||
| } |
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