1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
-- Peculiar:
-- * Requires hscassandra 0.0.8, available on github only
-- Functions to:
-- * Connect to a cassandra nosql server
-- * Put a bytestring
-- * Get a bytestring
-- This file acts as a microbench for insertion or retrieval of keys
import Database.Cassandra
import Database.Cassandra.Types
import qualified Data.ByteString.Lazy.Char8 as BS
import qualified Database.Cassandra.Thrift.Cassandra_Types as CT
import Data.Either.Utils
import qualified Data.List as L
import System.Time
import Data.Time.Clock
import System.Environment
import Control.Monad
import qualified Data.Set as S
config = CassandraConfig { cassandraKeyspace = "Test2"
, cassandraConsistencyLevel = ONE
, cassandraHostname = "127.0.0.1"
, cassandraPort = 9160
, cassandraUsername = ""
, cassandraPassword = ""
}
pack :: [Char] -> BS.ByteString
pack string = BS.pack string
deColumnValue :: Column -> BS.ByteString
deColumnValue (Column _ value _) = value
fetchValue string = runCassandraT config $ do
res <- get "Users" (pack string) AllColumns
return $ deColumnValue $ head $ res
insertValue string byteString = runCassandraT config $ do
insert "Users" (pack string) [ (pack "name") =: byteString ]
removeValue string = runCassandraT config $ do
remove "Users" (pack string) (ColNames [ (pack "name") ])
main = do
let words = map (\n -> (show n) ++ "Thequickbrownfoxjumpedoverthelazydog") $ take 50000 [1..]
putStrLn "Benchmarking Cassandra binding."
putStrLn "About to start timing writes..."
writeStart <- getCurrentTime
runCassandraT config $ do
mapM_ (\w -> insert "Users" (pack w) [(pack "name") =: (pack w) ]) words
writeStop <- getCurrentTime
let writeTime = diffUTCTime writeStop writeStart
putStrLn ("Writes took " ++ (show $ writeTime))
putStrLn "Starting reads..."
readStart <- getCurrentTime
runCassandraT config $ do
mapM_ (\w -> get "Users" (pack w) AllColumns) words
readStop <- getCurrentTime
let readTime = diffUTCTime readStop readStart
putStrLn ("Reads took " ++ (show $ readTime))
let totalTime = diffUTCTime readStop writeStart
putStrLn ("Total time: " ++ (show $ totalTime))
putStrLn "Removing keys..."
runCassandraT config $ do
mapM_ (\w -> remove "Users" (pack w) (ColNames [ (pack "name") ])) words
|
