diff options
Diffstat (limited to 'ethdb/database.go')
| -rw-r--r-- | ethdb/database.go | 151 |
1 files changed, 69 insertions, 82 deletions
diff --git a/ethdb/database.go b/ethdb/database.go index e82528f25..7d5fb0b9e 100644 --- a/ethdb/database.go +++ b/ethdb/database.go @@ -17,8 +17,6 @@ package ethdb import ( - "fmt" - "path/filepath" "strconv" "strings" "sync" @@ -37,20 +35,6 @@ import ( var OpenFileLimit = 64 -// cacheRatio specifies how the total allotted cache is distributed between the -// various system databases. -var cacheRatio = map[string]float64{ - "chaindata": 1.0, - "lightchaindata": 1.0, -} - -// handleRatio specifies how the total allotted file descriptors is distributed -// between the various system databases. -var handleRatio = map[string]float64{ - "chaindata": 1.0, - "lightchaindata": 1.0, -} - type LDBDatabase struct { fn string // filename for reporting db *leveldb.DB // LevelDB instance @@ -67,20 +51,22 @@ type LDBDatabase struct { quitLock sync.Mutex // Mutex protecting the quit channel access quitChan chan chan error // Quit channel to stop the metrics collection before closing the database + + log log.Logger // Contextual logger tracking the database path } // NewLDBDatabase returns a LevelDB wrapped object. func NewLDBDatabase(file string, cache int, handles int) (*LDBDatabase, error) { - // Calculate the cache and file descriptor allowance for this particular database - cache = int(float64(cache) * cacheRatio[filepath.Base(file)]) + logger := log.New("database", file) + + // Ensure we have some minimal caching and file guarantees if cache < 16 { cache = 16 } - handles = int(float64(handles) * handleRatio[filepath.Base(file)]) if handles < 16 { handles = 16 } - log.Info(fmt.Sprintf("Allotted %dMB cache and %d file handles to %s", cache, handles, file)) + logger.Info("Allocated cache and file handles", "cache", cache, "handles", handles) // Open the db and recover any potential corruptions db, err := leveldb.OpenFile(file, &opt.Options{ @@ -97,8 +83,9 @@ func NewLDBDatabase(file string, cache int, handles int) (*LDBDatabase, error) { return nil, err } return &LDBDatabase{ - fn: file, - db: db, + fn: file, + db: db, + log: logger, }, nil } @@ -108,103 +95,103 @@ func (db *LDBDatabase) Path() string { } // Put puts the given key / value to the queue -func (self *LDBDatabase) Put(key []byte, value []byte) error { +func (db *LDBDatabase) Put(key []byte, value []byte) error { // Measure the database put latency, if requested - if self.putTimer != nil { - defer self.putTimer.UpdateSince(time.Now()) + if db.putTimer != nil { + defer db.putTimer.UpdateSince(time.Now()) } // Generate the data to write to disk, update the meter and write //value = rle.Compress(value) - if self.writeMeter != nil { - self.writeMeter.Mark(int64(len(value))) + if db.writeMeter != nil { + db.writeMeter.Mark(int64(len(value))) } - return self.db.Put(key, value, nil) + return db.db.Put(key, value, nil) } // Get returns the given key if it's present. -func (self *LDBDatabase) Get(key []byte) ([]byte, error) { +func (db *LDBDatabase) Get(key []byte) ([]byte, error) { // Measure the database get latency, if requested - if self.getTimer != nil { - defer self.getTimer.UpdateSince(time.Now()) + if db.getTimer != nil { + defer db.getTimer.UpdateSince(time.Now()) } // Retrieve the key and increment the miss counter if not found - dat, err := self.db.Get(key, nil) + dat, err := db.db.Get(key, nil) if err != nil { - if self.missMeter != nil { - self.missMeter.Mark(1) + if db.missMeter != nil { + db.missMeter.Mark(1) } return nil, err } // Otherwise update the actually retrieved amount of data - if self.readMeter != nil { - self.readMeter.Mark(int64(len(dat))) + if db.readMeter != nil { + db.readMeter.Mark(int64(len(dat))) } return dat, nil //return rle.Decompress(dat) } // Delete deletes the key from the queue and database -func (self *LDBDatabase) Delete(key []byte) error { +func (db *LDBDatabase) Delete(key []byte) error { // Measure the database delete latency, if requested - if self.delTimer != nil { - defer self.delTimer.UpdateSince(time.Now()) + if db.delTimer != nil { + defer db.delTimer.UpdateSince(time.Now()) } // Execute the actual operation - return self.db.Delete(key, nil) + return db.db.Delete(key, nil) } -func (self *LDBDatabase) NewIterator() iterator.Iterator { - return self.db.NewIterator(nil, nil) +func (db *LDBDatabase) NewIterator() iterator.Iterator { + return db.db.NewIterator(nil, nil) } -func (self *LDBDatabase) Close() { +func (db *LDBDatabase) Close() { // Stop the metrics collection to avoid internal database races - self.quitLock.Lock() - defer self.quitLock.Unlock() + db.quitLock.Lock() + defer db.quitLock.Unlock() - if self.quitChan != nil { + if db.quitChan != nil { errc := make(chan error) - self.quitChan <- errc + db.quitChan <- errc if err := <-errc; err != nil { - log.Error(fmt.Sprintf("metrics failure in '%s': %v\n", self.fn, err)) + db.log.Error("Metrics collection failed", "err", err) } } - err := self.db.Close() + err := db.db.Close() if err == nil { - log.Info(fmt.Sprint("closed db:", self.fn)) + db.log.Info("Database closed") } else { - log.Error(fmt.Sprintf("error closing db %s: %v", self.fn, err)) + db.log.Error("Failed to close database", "err", err) } } -func (self *LDBDatabase) LDB() *leveldb.DB { - return self.db +func (db *LDBDatabase) LDB() *leveldb.DB { + return db.db } // Meter configures the database metrics collectors and -func (self *LDBDatabase) Meter(prefix string) { +func (db *LDBDatabase) Meter(prefix string) { // Short circuit metering if the metrics system is disabled if !metrics.Enabled { return } // Initialize all the metrics collector at the requested prefix - self.getTimer = metrics.NewTimer(prefix + "user/gets") - self.putTimer = metrics.NewTimer(prefix + "user/puts") - self.delTimer = metrics.NewTimer(prefix + "user/dels") - self.missMeter = metrics.NewMeter(prefix + "user/misses") - self.readMeter = metrics.NewMeter(prefix + "user/reads") - self.writeMeter = metrics.NewMeter(prefix + "user/writes") - self.compTimeMeter = metrics.NewMeter(prefix + "compact/time") - self.compReadMeter = metrics.NewMeter(prefix + "compact/input") - self.compWriteMeter = metrics.NewMeter(prefix + "compact/output") + db.getTimer = metrics.NewTimer(prefix + "user/gets") + db.putTimer = metrics.NewTimer(prefix + "user/puts") + db.delTimer = metrics.NewTimer(prefix + "user/dels") + db.missMeter = metrics.NewMeter(prefix + "user/misses") + db.readMeter = metrics.NewMeter(prefix + "user/reads") + db.writeMeter = metrics.NewMeter(prefix + "user/writes") + db.compTimeMeter = metrics.NewMeter(prefix + "compact/time") + db.compReadMeter = metrics.NewMeter(prefix + "compact/input") + db.compWriteMeter = metrics.NewMeter(prefix + "compact/output") // Create a quit channel for the periodic collector and run it - self.quitLock.Lock() - self.quitChan = make(chan chan error) - self.quitLock.Unlock() + db.quitLock.Lock() + db.quitChan = make(chan chan error) + db.quitLock.Unlock() - go self.meter(3 * time.Second) + go db.meter(3 * time.Second) } // meter periodically retrieves internal leveldb counters and reports them to @@ -218,7 +205,7 @@ func (self *LDBDatabase) Meter(prefix string) { // 1 | 85 | 109.27913 | 28.09293 | 213.92493 | 214.26294 // 2 | 523 | 1000.37159 | 7.26059 | 66.86342 | 66.77884 // 3 | 570 | 1113.18458 | 0.00000 | 0.00000 | 0.00000 -func (self *LDBDatabase) meter(refresh time.Duration) { +func (db *LDBDatabase) meter(refresh time.Duration) { // Create the counters to store current and previous values counters := make([][]float64, 2) for i := 0; i < 2; i++ { @@ -227,9 +214,9 @@ func (self *LDBDatabase) meter(refresh time.Duration) { // Iterate ad infinitum and collect the stats for i := 1; ; i++ { // Retrieve the database stats - stats, err := self.db.GetProperty("leveldb.stats") + stats, err := db.db.GetProperty("leveldb.stats") if err != nil { - log.Error(fmt.Sprintf("failed to read database stats: %v", err)) + db.log.Error("Failed to read database stats", "err", err) return } // Find the compaction table, skip the header @@ -238,7 +225,7 @@ func (self *LDBDatabase) meter(refresh time.Duration) { lines = lines[1:] } if len(lines) <= 3 { - log.Error(fmt.Sprintf("compaction table not found")) + db.log.Error("Compaction table not found") return } lines = lines[3:] @@ -253,27 +240,27 @@ func (self *LDBDatabase) meter(refresh time.Duration) { break } for idx, counter := range parts[3:] { - if value, err := strconv.ParseFloat(strings.TrimSpace(counter), 64); err != nil { - log.Error(fmt.Sprintf("compaction entry parsing failed: %v", err)) + value, err := strconv.ParseFloat(strings.TrimSpace(counter), 64) + if err != nil { + db.log.Error("Compaction entry parsing failed", "err", err) return - } else { - counters[i%2][idx] += value } + counters[i%2][idx] += value } } // Update all the requested meters - if self.compTimeMeter != nil { - self.compTimeMeter.Mark(int64((counters[i%2][0] - counters[(i-1)%2][0]) * 1000 * 1000 * 1000)) + if db.compTimeMeter != nil { + db.compTimeMeter.Mark(int64((counters[i%2][0] - counters[(i-1)%2][0]) * 1000 * 1000 * 1000)) } - if self.compReadMeter != nil { - self.compReadMeter.Mark(int64((counters[i%2][1] - counters[(i-1)%2][1]) * 1024 * 1024)) + if db.compReadMeter != nil { + db.compReadMeter.Mark(int64((counters[i%2][1] - counters[(i-1)%2][1]) * 1024 * 1024)) } - if self.compWriteMeter != nil { - self.compWriteMeter.Mark(int64((counters[i%2][2] - counters[(i-1)%2][2]) * 1024 * 1024)) + if db.compWriteMeter != nil { + db.compWriteMeter.Mark(int64((counters[i%2][2] - counters[(i-1)%2][2]) * 1024 * 1024)) } // Sleep a bit, then repeat the stats collection select { - case errc := <-self.quitChan: + case errc := <-db.quitChan: // Quit requesting, stop hammering the database errc <- nil return |