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author | Tathagata Das <tathagata.das1565@gmail.com> | 2013-02-20 11:06:57 -0800 |
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committer | Tathagata Das <tathagata.das1565@gmail.com> | 2013-02-20 11:06:57 -0800 |
commit | 2921fa7d81be201e5d694ab58ade6233f397eef9 (patch) | |
tree | 5b16bdd3dd1b2bff6a8fea51a351fd6bd5fb28cc /examples | |
parent | 991d3342fed1cf5626142bc90872f79618ea94c8 (diff) | |
parent | 972fe7714fb57385d14e4d776f70e0040d3a8f7e (diff) | |
download | spark-2921fa7d81be201e5d694ab58ade6233f397eef9.tar.gz spark-2921fa7d81be201e5d694ab58ade6233f397eef9.tar.bz2 spark-2921fa7d81be201e5d694ab58ade6233f397eef9.zip |
Merge pull request #487 from tdas/streaming
Merged latest master changes to streaming
Diffstat (limited to 'examples')
-rw-r--r-- | examples/src/main/scala/spark/examples/LogQuery.scala | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/examples/src/main/scala/spark/examples/LogQuery.scala b/examples/src/main/scala/spark/examples/LogQuery.scala new file mode 100644 index 0000000000..5330b8da94 --- /dev/null +++ b/examples/src/main/scala/spark/examples/LogQuery.scala @@ -0,0 +1,66 @@ +package spark.examples + +import spark.SparkContext +import spark.SparkContext._ +/** + * Executes a roll up-style query against Apache logs. + */ +object LogQuery { + val exampleApacheLogs = List( + """10.10.10.10 - "FRED" [18/Jan/2013:17:56:07 +1100] "GET http://images.com/2013/Generic.jpg + | HTTP/1.1" 304 315 "http://referall.com/" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; + | GTB7.4; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.04506.648; .NET CLR + | 3.5.21022; .NET CLR 3.0.4506.2152; .NET CLR 1.0.3705; .NET CLR 1.1.4322; .NET CLR + | 3.5.30729; Release=ARP)" "UD-1" - "image/jpeg" "whatever" 0.350 "-" - "" 265 923 934 "" + | 62.24.11.25 images.com 1358492167 - Whatup""".stripMargin.replace("\n", ""), + """10.10.10.10 - "FRED" [18/Jan/2013:18:02:37 +1100] "GET http://images.com/2013/Generic.jpg + | HTTP/1.1" 304 306 "http:/referall.com" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; + | GTB7.4; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.04506.648; .NET CLR + | 3.5.21022; .NET CLR 3.0.4506.2152; .NET CLR 1.0.3705; .NET CLR 1.1.4322; .NET CLR + | 3.5.30729; Release=ARP)" "UD-1" - "image/jpeg" "whatever" 0.352 "-" - "" 256 977 988 "" + | 0 73.23.2.15 images.com 1358492557 - Whatup""".stripMargin.replace("\n", "") + ) + + def main(args: Array[String]) { + if (args.length == 0) { + System.err.println("Usage: LogQuery <master> [logFile]") + System.exit(1) + } + val sc = new SparkContext(args(0), "Log Query") + + val dataSet = + if (args.length == 2) sc.textFile(args(1)) + else sc.parallelize(exampleApacheLogs) + + val apacheLogRegex = + """^([\d.]+) (\S+) (\S+) \[([\w\d:/]+\s[+\-]\d{4})\] "(.+?)" (\d{3}) ([\d\-]+) "([^"]+)" "([^"]+)".*""".r + + /** Tracks the total query count and number of aggregate bytes for a particular group. */ + class Stats(val count: Int, val numBytes: Int) extends Serializable { + def merge(other: Stats) = new Stats(count + other.count, numBytes + other.numBytes) + override def toString = "bytes=%s\tn=%s".format(numBytes, count) + } + + def extractKey(line: String): (String, String, String) = { + apacheLogRegex.findFirstIn(line) match { + case Some(apacheLogRegex(ip, _, user, dateTime, query, status, bytes, referer, ua)) => + if (user != "\"-\"") (ip, user, query) + else (null, null, null) + case _ => (null, null, null) + } + } + + def extractStats(line: String): Stats = { + apacheLogRegex.findFirstIn(line) match { + case Some(apacheLogRegex(ip, _, user, dateTime, query, status, bytes, referer, ua)) => + new Stats(1, bytes.toInt) + case _ => new Stats(1, 0) + } + } + + dataSet.map(line => (extractKey(line), extractStats(line))) + .reduceByKey((a, b) => a.merge(b)) + .collect().foreach{ + case (user, query) => println("%s\t%s".format(user, query))} + } +} |