mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
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198 lines
9.7 KiB
Go
198 lines
9.7 KiB
Go
package vlstorage
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import (
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"context"
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"flag"
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"fmt"
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"io"
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"net/http"
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"time"
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"github.com/VictoriaMetrics/metrics"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/flagutil"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/fs"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/httpserver"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/logstorage"
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)
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var (
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retentionPeriod = flagutil.NewDuration("retentionPeriod", "7d", "Log entries with timestamps older than now-retentionPeriod are automatically deleted; "+
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"log entries with timestamps outside the retention are also rejected during data ingestion; the minimum supported retention is 1d (one day); "+
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"see https://docs.victoriametrics.com/VictoriaLogs/#retention")
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futureRetention = flagutil.NewDuration("futureRetention", "2d", "Log entries with timestamps bigger than now+futureRetention are rejected during data ingestion; "+
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"see https://docs.victoriametrics.com/VictoriaLogs/#retention")
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storageDataPath = flag.String("storageDataPath", "victoria-logs-data", "Path to directory with the VictoriaLogs data; "+
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"see https://docs.victoriametrics.com/VictoriaLogs/#storage")
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inmemoryDataFlushInterval = flag.Duration("inmemoryDataFlushInterval", 5*time.Second, "The interval for guaranteed saving of in-memory data to disk. "+
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"The saved data survives unclean shutdowns such as OOM crash, hardware reset, SIGKILL, etc. "+
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"Bigger intervals may help increase the lifetime of flash storage with limited write cycles (e.g. Raspberry PI). "+
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"Smaller intervals increase disk IO load. Minimum supported value is 1s")
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logNewStreams = flag.Bool("logNewStreams", false, "Whether to log creation of new streams; this can be useful for debugging of high cardinality issues with log streams; "+
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"see https://docs.victoriametrics.com/VictoriaLogs/keyConcepts.html#stream-fields ; see also -logIngestedRows")
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logIngestedRows = flag.Bool("logIngestedRows", false, "Whether to log all the ingested log entries; this can be useful for debugging of data ingestion; "+
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"see https://docs.victoriametrics.com/VictoriaLogs/data-ingestion/ ; see also -logNewStreams")
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minFreeDiskSpaceBytes = flagutil.NewBytes("storage.minFreeDiskSpaceBytes", 10e6, "The minimum free disk space at -storageDataPath after which "+
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"the storage stops accepting new data")
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)
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// Init initializes vlstorage.
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//
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// Stop must be called when vlstorage is no longer needed
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func Init() {
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if strg != nil {
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logger.Panicf("BUG: Init() has been already called")
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}
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if retentionPeriod.Duration() < 24*time.Hour {
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logger.Fatalf("-retentionPeriod cannot be smaller than a day; got %s", retentionPeriod)
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}
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cfg := &logstorage.StorageConfig{
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Retention: retentionPeriod.Duration(),
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FlushInterval: *inmemoryDataFlushInterval,
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FutureRetention: futureRetention.Duration(),
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LogNewStreams: *logNewStreams,
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LogIngestedRows: *logIngestedRows,
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MinFreeDiskSpaceBytes: minFreeDiskSpaceBytes.N,
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}
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logger.Infof("opening storage at -storageDataPath=%s", *storageDataPath)
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startTime := time.Now()
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strg = logstorage.MustOpenStorage(*storageDataPath, cfg)
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var ss logstorage.StorageStats
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strg.UpdateStats(&ss)
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logger.Infof("successfully opened storage in %.3f seconds; smallParts: %d; bigParts: %d; smallPartBlocks: %d; bigPartBlocks: %d; smallPartRows: %d; bigPartRows: %d; "+
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"smallPartSize: %d bytes; bigPartSize: %d bytes",
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time.Since(startTime).Seconds(), ss.SmallParts, ss.BigParts, ss.SmallPartBlocks, ss.BigPartBlocks, ss.SmallPartRowsCount, ss.BigPartRowsCount,
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ss.CompressedSmallPartSize, ss.CompressedBigPartSize)
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// register storage metrics
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storageMetrics = metrics.NewSet()
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storageMetrics.RegisterMetricsWriter(func(w io.Writer) {
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writeStorageMetrics(w, strg)
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})
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metrics.RegisterSet(storageMetrics)
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}
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// Stop stops vlstorage.
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func Stop() {
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metrics.UnregisterSet(storageMetrics)
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storageMetrics = nil
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strg.MustClose()
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strg = nil
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}
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var strg *logstorage.Storage
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var storageMetrics *metrics.Set
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// CanWriteData returns non-nil error if it cannot write data to vlstorage.
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func CanWriteData() error {
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if strg.IsReadOnly() {
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return &httpserver.ErrorWithStatusCode{
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Err: fmt.Errorf("cannot add rows into storage in read-only mode; the storage can be in read-only mode "+
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"because of lack of free disk space at -storageDataPath=%s", *storageDataPath),
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StatusCode: http.StatusTooManyRequests,
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}
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}
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return nil
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}
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// MustAddRows adds lr to vlstorage
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//
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// It is advised to call CanWriteData() before calling MustAddRows()
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func MustAddRows(lr *logstorage.LogRows) {
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strg.MustAddRows(lr)
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}
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// RunQuery runs the given q and calls writeBlock for the returned data blocks
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func RunQuery(ctx context.Context, tenantIDs []logstorage.TenantID, q *logstorage.Query, writeBlock logstorage.WriteBlockFunc) error {
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return strg.RunQuery(ctx, tenantIDs, q, writeBlock)
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}
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// GetFieldNames executes q and returns field names seen in results.
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func GetFieldNames(ctx context.Context, tenantIDs []logstorage.TenantID, q *logstorage.Query) ([]logstorage.ValueWithHits, error) {
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return strg.GetFieldNames(ctx, tenantIDs, q)
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}
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// GetFieldValues executes q and returns unique values for the fieldName seen in results.
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//
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// If limit > 0, then up to limit unique values are returned.
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func GetFieldValues(ctx context.Context, tenantIDs []logstorage.TenantID, q *logstorage.Query, fieldName string, limit uint64) ([]logstorage.ValueWithHits, error) {
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return strg.GetFieldValues(ctx, tenantIDs, q, fieldName, limit)
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}
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// GetStreamLabelNames executes q and returns stream labels names seen in results.
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func GetStreamLabelNames(ctx context.Context, tenantIDs []logstorage.TenantID, q *logstorage.Query) ([]logstorage.ValueWithHits, error) {
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return strg.GetStreamLabelNames(ctx, tenantIDs, q)
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}
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// GetStreamLabelValues executes q and returns stream label values for the given labelName seen in results.
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//
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// If limit > 0, then up to limit unique stream label values are returned.
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func GetStreamLabelValues(ctx context.Context, tenantIDs []logstorage.TenantID, q *logstorage.Query, labelName string, limit uint64) ([]logstorage.ValueWithHits, error) {
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return strg.GetStreamLabelValues(ctx, tenantIDs, q, labelName, limit)
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}
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// GetStreams executes q and returns streams seen in query results.
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//
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// If limit > 0, then up to limit unique streams are returned.
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func GetStreams(ctx context.Context, tenantIDs []logstorage.TenantID, q *logstorage.Query, limit uint64) ([]logstorage.ValueWithHits, error) {
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return strg.GetStreams(ctx, tenantIDs, q, limit)
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}
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func writeStorageMetrics(w io.Writer, strg *logstorage.Storage) {
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var ss logstorage.StorageStats
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strg.UpdateStats(&ss)
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metrics.WriteGaugeUint64(w, fmt.Sprintf(`vl_free_disk_space_bytes{path=%q}`, *storageDataPath), fs.MustGetFreeSpace(*storageDataPath))
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isReadOnly := uint64(0)
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if ss.IsReadOnly {
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isReadOnly = 1
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}
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metrics.WriteGaugeUint64(w, fmt.Sprintf(`vl_storage_is_read_only{path=%q}`, *storageDataPath), isReadOnly)
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metrics.WriteGaugeUint64(w, `vl_active_merges{type="storage/inmemory"}`, ss.InmemoryActiveMerges)
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metrics.WriteGaugeUint64(w, `vl_active_merges{type="storage/small"}`, ss.SmallPartActiveMerges)
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metrics.WriteGaugeUint64(w, `vl_active_merges{type="storage/big"}`, ss.BigPartActiveMerges)
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metrics.WriteCounterUint64(w, `vl_merges_total{type="storage/inmemory"}`, ss.InmemoryMergesTotal)
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metrics.WriteCounterUint64(w, `vl_merges_total{type="storage/small"}`, ss.SmallPartMergesTotal)
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metrics.WriteCounterUint64(w, `vl_merges_total{type="storage/big"}`, ss.BigPartMergesTotal)
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metrics.WriteGaugeUint64(w, `vl_storage_rows{type="storage/inmemory"}`, ss.InmemoryRowsCount)
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metrics.WriteGaugeUint64(w, `vl_storage_rows{type="storage/small"}`, ss.SmallPartRowsCount)
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metrics.WriteGaugeUint64(w, `vl_storage_rows{type="storage/big"}`, ss.BigPartRowsCount)
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metrics.WriteGaugeUint64(w, `vl_storage_parts{type="storage/inmemory"}`, ss.InmemoryParts)
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metrics.WriteGaugeUint64(w, `vl_storage_parts{type="storage/small"}`, ss.SmallParts)
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metrics.WriteGaugeUint64(w, `vl_storage_parts{type="storage/big"}`, ss.BigParts)
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metrics.WriteGaugeUint64(w, `vl_storage_blocks{type="storage/inmemory"}`, ss.InmemoryBlocks)
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metrics.WriteGaugeUint64(w, `vl_storage_blocks{type="storage/small"}`, ss.SmallPartBlocks)
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metrics.WriteGaugeUint64(w, `vl_storage_blocks{type="storage/big"}`, ss.BigPartBlocks)
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metrics.WriteGaugeUint64(w, `vl_partitions`, ss.PartitionsCount)
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metrics.WriteCounterUint64(w, `vl_streams_created_total`, ss.StreamsCreatedTotal)
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metrics.WriteGaugeUint64(w, `vl_indexdb_rows`, ss.IndexdbItemsCount)
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metrics.WriteGaugeUint64(w, `vl_indexdb_parts`, ss.IndexdbPartsCount)
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metrics.WriteGaugeUint64(w, `vl_indexdb_blocks`, ss.IndexdbBlocksCount)
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metrics.WriteGaugeUint64(w, `vl_data_size_bytes{type="indexdb"}`, ss.IndexdbSizeBytes)
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metrics.WriteGaugeUint64(w, `vl_data_size_bytes{type="storage"}`, ss.CompressedInmemorySize+ss.CompressedSmallPartSize+ss.CompressedBigPartSize)
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metrics.WriteGaugeUint64(w, `vl_compressed_data_size_bytes{type="storage/inmemory"}`, ss.CompressedInmemorySize)
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metrics.WriteGaugeUint64(w, `vl_compressed_data_size_bytes{type="storage/small"}`, ss.CompressedSmallPartSize)
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metrics.WriteGaugeUint64(w, `vl_compressed_data_size_bytes{type="storage/big"}`, ss.CompressedBigPartSize)
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metrics.WriteGaugeUint64(w, `vl_uncompressed_data_size_bytes{type="storage/inmemory"}`, ss.UncompressedInmemorySize)
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metrics.WriteGaugeUint64(w, `vl_uncompressed_data_size_bytes{type="storage/small"}`, ss.UncompressedSmallPartSize)
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metrics.WriteGaugeUint64(w, `vl_uncompressed_data_size_bytes{type="storage/big"}`, ss.UncompressedBigPartSize)
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metrics.WriteCounterUint64(w, `vl_rows_dropped_total{reason="too_big_timestamp"}`, ss.RowsDroppedTooBigTimestamp)
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metrics.WriteCounterUint64(w, `vl_rows_dropped_total{reason="too_small_timestamp"}`, ss.RowsDroppedTooSmallTimestamp)
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}
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