yandex-tank/Tank/Plugins/ApacheBenchmark.py

from Tank.Plugins.Aggregator import AggregatorPlugin, AbstractReader
from Tank.Plugins.ConsoleOnline import ConsoleOnlinePlugin, AbstractInfoWidget
from tankcore import AbstractPlugin
import os
import subprocess
import tankcore

# TODO: 3 add console screen widget with info and PB measured via stderr info parsing
class ApacheBenchmarkPlugin(AbstractPlugin):

    SECTION = 'ab'
    
    def __init__(self, core):
        AbstractPlugin.__init__(self, core)
        self.out_file = None
        self.process = None
        self.concurrency = 0
        self.options = None
        self.url = None
        self.requests = None

    @staticmethod
    def get_key():
        return __file__
    
    def configure(self):
        self.options = self.get_option("options", '')
        self.url = self.get_option("url", 'http://localhost/')
        self.requests = self.get_option("requests", '100')
        self.concurrency = self.get_option("concurrency", '1')
        self.out_file = self.core.mkstemp('.log', 'ab_')
        self.core.add_artifact_file(self.out_file)

    def prepare_test(self):
        aggregator = None
        try:
            aggregator = self.core.get_plugin_of_type(AggregatorPlugin)
        except Exception, ex:
            self.log.warning("No aggregator found: %s", ex)

        if aggregator:
            aggregator.reader = ABReader(aggregator, self)
            
        try:
            console = self.core.get_plugin_of_type(ConsoleOnlinePlugin)
        except Exception, ex:
            self.log.debug("Console not found: %s", ex)
            console = None
            
        if console:    
            widget = ABInfoWidget(self)
            console.add_info_widget(widget)
        
            
    def start_test(self):
        args = ['ab', '-r', '-g', self.out_file,
                '-n', self.requests,
                '-c', self.concurrency, self.url]
        self.log.info("Starting ab with arguments: %s", args)
        self.process = subprocess.Popen(args, stderr=subprocess.PIPE, stdout=subprocess.PIPE, close_fds=True)
           
    def is_test_finished(self):
        rc = self.process.poll()
        if rc != None:
            self.log.debug("%s exit code: %s", self.SECTION, rc)
            return rc
        else:
            return -1

            
    def end_test(self, retcode):
        if self.process and self.process.poll() == None:
            self.log.warn("Terminating ab process with PID %s", self.process.pid)
            self.process.terminate()
        else:
            self.log.info("Seems ab finished OK")

        if self.process:
            tankcore.log_stdout_stderr(self.log, self.process.stdout, self.process.stderr, self.SECTION)
        return retcode
            

 
class ABReader(AbstractReader):
    '''
    Adapter to read AB files
    '''
    def __init__(self, aggregator, ab):
        AbstractReader.__init__(self, aggregator)
        self.ab = ab
        self.results = None
    
    def check_open_files(self):
        if not self.results and os.path.exists(self.ab.out_file):
            self.log.debug("Opening ab out file: %s", self.ab.out_file)
            self.results = open(self.ab.out_file, 'r')
            
    def close_files(self):
        if self.results:
            self.results.close()
    
    def get_next_sample(self, force):
        if self.results:
            read_lines = self.results.readlines()
            if read_lines:
                read_lines.pop(0) # remove header line
            self.log.debug("About to process %s result lines", len(read_lines))
            for line in read_lines:
                line = line.strip()
                if not line:
                    return None 
                #Tue Sep 25 14:19:36 2012        1348568376      0       36      36      34
                data = line.split("\t")
                if len(data) != 6:
                    self.log.warning("Wrong ab log line, skipped: %s", line)
                    continue
                cur_time = int(data[1])
                ctime = int(data[2])
                #dtime = int(data[3])
                ttime = int(data[4])
                wait = int(data[5])
    
                if not cur_time in self.data_buffer.keys():
                    self.data_queue.append(cur_time)
                    self.data_buffer[cur_time] = []
                #        marker, threads, overallRT, httpCode, netCode
                data_item = ['', self.ab.concurrency, ttime, 0, 0]
                # bytes:     sent    received
                data_item += [0, 0]
                #        connect    send    latency    receive
                data_item += [ctime, 0, wait, ttime - ctime - wait]
                #        accuracy
                data_item += [0]
                self.data_buffer[cur_time].append(data_item)
                    
        if self.data_queue:
            return self.pop_second()
        else:
            return None 
    

class ABInfoWidget(AbstractInfoWidget):
    
    def __init__(self, ab):
        AbstractInfoWidget.__init__(self)
        self.ab = ab
        self.active_threads = 0

    def get_index(self):
        return 0

    def aggregate_second(self, second_aggregate_data):
        self.active_threads = second_aggregate_data.overall.active_threads

    def render(self, screen):        
        ab_text = " Apache Benchmark Test "
        space = screen.right_panel_width - len(ab_text) - 1 
        left_spaces = space / 2
        right_spaces = space / 2
        template = screen.markup.BG_BROWN + '~' * left_spaces + ab_text + ' ' + '~' * right_spaces + screen.markup.RESET + "\n" 
        template += "           URL: %s\n"
        template += "   Concurrency: %s\n"
        template += "Total Requests: %s"
        data = (self.ab.url, self.ab.concurrency, self.ab.requests)
        
        return template % data