Class: Pmux::LogView::LogParser

Inherits:
Object
  • Object
show all
Defined in:
lib/pmux-logview/log_parser.rb

Constant Summary collapse

@@pmux_log_path = 
".pmux/log"
@@pmux_old_log_path = 
".pmux/log/old"
@@dispatcher_log = 
"dispatcher.log"
@@max_dispatcher_log_size =

128k

1024 * 64
@@document_re = 
Regexp.new("^---")
@@header_re = 
Regexp.new("^:[a-z_]+:")
@@header_params_re = 
Regexp.new("^  :[a-z_]+:")
@@task_re = 
Regexp.new("  [a-z_]+:")
@@futter_re = 
Regexp.new("^:[a-z_]+:")
@@mapper_re = 
Regexp.new("^:mapper:")
@@job_started_at_re = 
Regexp.new("^:job_started_at:")
@@start_time_re = 
Regexp.new("^:start_time:")
@@invoked_at_re = 
Regexp.new("^:invoked_at:")
@@map_tasks_re = 
Regexp.new("^:map_tasks:")
@@tasksize_re = 
Regexp.new("^:tasksize:")
@@reduce_tasks_re = 
Regexp.new("^:reduce_tasks:")
@@params_re = 
Regexp.new("^:params:")
@@task_id_re = 
Regexp.new("^[0-9]+:")
@@task_allocated_at_re = 
Regexp.new("^  allocated_at:")
@@task_welapse_re = 
Regexp.new("^  welapse:")
@@task_elapse_re = 
Regexp.new("^  elapse:")
@@job_finished_at_re = 
Regexp.new("^:job_finished_at:")
@@error_status_re = 
Regexp.new("^:error_status:")
@@error_message_re = 
Regexp.new("^:error_message:")
@@quote_re = 
Regexp.new("^['\"]|['\"]$")

Instance Method Summary collapse

Constructor Details

#initialize(cache_dir_path) ⇒ LogParser

Returns a new instance of LogParser.



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# File 'lib/pmux-logview/log_parser.rb', line 37

def initialize cache_dir_path
  @cache_dir_path = cache_dir_path
  @logger = LoggerWrapper.instance()
end

Instance Method Details

#add_cache_ids(cache_ids, jobs, job_id, job, sort_key, sort_order) ⇒ Object 



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# File 'lib/pmux-logview/log_parser.rb', line 137

def add_cache_ids cache_ids, jobs, job_id, job, sort_key, sort_order
  insert_idx = -1
  for idx in 0..(cache_ids.length - 1)
    id = cache_ids[idx] 
    if sort_order == "desc"
      case sort_key
      when "start_time"
        if job["start_time_msec"].to_i > jobs[id]["start_time_msec"].to_i
          insert_idx = idx
          break
        end
      when "job_id"
        if job["job_id"].to_i > jobs[id]["job_id"].to_i
          insert_idx = idx
          break
        end
      when "mapper"
        if job["mapper"] > jobs[id]["mapper"]
          insert_idx = idx
          break
        end
      when "end_time"
        if job["end_time_msec"].to_i > jobs[id]["end_time_msec"].to_i
          insert_idx = idx
          break
        end
      when "elapsed_time"
        if job["elapsed_time"].to_i > jobs[id]["elapsed_time"].to_i
          insert_idx = idx
          break
        end
      end
    elsif sort_order == "asc"
      case sort_key
      when "start_time"
        if job["start_time_msec"].to_i < jobs[id]["start_time_msec"].to_i
          insert_idx = idx
          break
        end
      when "job_id"
        if job["job_id"].to_i < jobs[id]["job_id"].to_i
          insert_idx = idx
          break
        end
      when "mapper"
        if job["mapper"] < jobs[id]["mapper"]
          insert_idx = idx
          break
        end
      when "end_time"
        if job["end_time_msec"].to_i < jobs[id]["end_time_msec"].to_i
          insert_idx = idx
          break
        end
      when "elapsed_time"
        if job["elapsed_time"].to_i < jobs[id]["elapsed_time"].to_i
          insert_idx = idx
          break
        end
      end
    end
  end
  if insert_idx != -1
    cache_ids.insert(insert_idx, job_id);
  else
    cache_ids.push(job_id)
  end
end

#fast_parse(file, job_id) ⇒ Object 



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# File 'lib/pmux-logview/log_parser.rb', line 46

def fast_parse file, job_id
  cachable = false
  job = {"end_time" => nil, "elapsed_time" => nil, "finished_tasks" => 0}
  job["job_id"] = job_id
  task_cnt = 0
  start_time = nil
  end_time = nil
  File.open(file) {|f|
    doc_cnt = 0
    f.each_line {|ln|
      if @@document_re =~ ln
        doc_cnt += 1
      elsif doc_cnt == 1 && (@@job_started_at_re =~ ln || @@start_time_re =~ ln)
        empty, key, value = ln.split(":", 3)
        start_time = DateTime::parse(value.strip())
        job["start_time_msec"] = start_time.strftime("%Q") 
        job["start_time"] = start_time.strftime("%Y-%m-%d %H:%M:%S")
      elsif doc_cnt == 1 && (@@map_tasks_re =~ ln ||  @@reduce_tasks_re =~ ln)
        empty, key, value = ln.split(":", 3)
        job[key] = value.strip().to_i()
      elsif doc_cnt == 1 && @@mapper_re =~ ln
        empty, key, value = ln.split(":", 3)
        job[key] = value.strip()
      elsif doc_cnt == 2 && @@task_id_re =~ ln
        task_cnt += 1
      elsif doc_cnt == 3 && @@job_finished_at_re =~ ln
        empty, key, value = ln.split(":", 3)
        end_time = DateTime::parse(value.strip())
        job["end_time_msec"] = end_time.strftime("%Q") 
        job["end_time"] = end_time.strftime("%Y-%m-%d %H:%M:%S")
        cachable = true
      elsif doc_cnt == 3 && @@error_status_re =~ ln
        empty, key, value = ln.split(":", 3)
        job[key] = value.strip()
        cachable = true
      elsif doc_cnt == 3 && @@error_message_re =~ ln
        empty, key, value = ln.split(":", 3)
        job[key] = value.strip().gsub(@@quote_re, "")
      end
    }
  }
  job["finished_tasks"] = task_cnt
  job["elapsed_time"] = ((end_time - start_time) * 86400).to_f if !start_time.nil? && !end_time.nil?
  if end_time.nil?
    if job["map_tasks"].nil?
      job["end_time"] = "--- %"
    elsif job["map_tasks"] == 0 
      job["end_time"] = "100%"
    else
      job["end_time"] = ((100 * job["finished_tasks"]) / job["map_tasks"]).to_s + "%"
    end
  end
  return [job, cachable]
end

#full_parse(file_path) ⇒ Object 



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# File 'lib/pmux-logview/log_parser.rb', line 259

def full_parse file_path
  documents = []
  File.open(file_path) {|f|
    doc_cnt = 0
    new_doc = nil
    task_id = nil
    f.each_line {|ln|
      if @@document_re =~ ln
        if !new_doc.nil?
          new_doc.delete(task_id) if doc_cnt == 2 && !task_id.nil? && new_doc[task_id].length < 5
          documents.push(new_doc)
        end
        doc_cnt += 1
        new_doc = {}
        task_id = nil
      elsif doc_cnt == 1 && (@@job_started_at_re =~ ln || @@invoked_at_re =~ ln || @@start_time_re =~ ln)
        empty, key, value = ln.split(":", 3)
        time = DateTime::parse(value.strip())
        new_doc[key] = time
      elsif doc_cnt == 1 && (@@map_tasks_re =~ ln || @@tasksize_re =~ ln || @@reduce_tasks_re =~ ln)
        empty, key, value = ln.split(":", 3)
        new_doc[key] = value.strip().to_i()
      elsif doc_cnt == 1 && @@params_re =~ ln
        empty, key, value = ln.split(":", 3)
        new_doc["params"] = {}
      elsif doc_cnt == 1 && @@header_re =~ ln
        empty, key, value = ln.split(":", 3)
        new_doc[key] = value.strip().gsub(@@quote_re, "")
      elsif doc_cnt == 1 && @@header_params_re =~ ln
        empty, key, value = ln.split(":", 3)
        new_doc["params"][key] = value.strip().gsub(@@quote_re, "")
      elsif doc_cnt == 2 && @@task_id_re =~ ln
        task_id, empty = ln.split(":", 2)
        new_doc[task_id] = {}
      elsif doc_cnt == 2 && (@@task_allocated_at_re =~ ln || @@task_welapse_re =~ ln || @@task_elapse_re =~ ln)
        key, value = ln.split(":", 2)
        new_doc[task_id][key.strip()] = value.strip().to_f()
      elsif doc_cnt == 2 && @@task_re =~ ln
        key, value = ln.split(":", 2)
        new_doc[task_id][key.strip()] = value.strip().gsub(@@quote_re, "")
      elsif doc_cnt == 3 && @@job_finished_at_re =~ ln
        empty, key, value = ln.split(":", 3)
        time = DateTime::parse(value.strip())
        new_doc[key] = time
      elsif doc_cnt == 3 && @@futter_re =~ ln
        empty, key, value = ln.split(":", 3)
        new_doc[key] = value.strip().gsub(@@quote_re, "")
      end
    }
    if !new_doc.nil?
      new_doc.delete(task_id) if doc_cnt == 2 && new_doc[task_id].length < 5
      documents.push(new_doc)
    end
    if documents.length == 1
      documents.push(nil)
    end
    if documents.length == 2
      documents.push(nil)
    end
  }
  return documents
end

#get_files(user, log_path) ⇒ Object 



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# File 'lib/pmux-logview/log_parser.rb', line 42

def get_files user, log_path
  return Dir.glob(File.expand_path(["~" + user, log_path, "*.yml"].join(File::SEPARATOR)))
end

#load_cache(file_path) ⇒ Object 



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# File 'lib/pmux-logview/log_parser.rb', line 101

def load_cache file_path
  cache = {} 
  return cache if !File.exist?(file_path)
  begin
    File.open(file_path, "rb") {|f|
      f.flock(File::LOCK_SH)
      cache = Marshal.load(f)
      f.flock(File::LOCK_UN)
    }
    return cache
  rescue
    @logger.warn("cannot load cache file (#{file_path})")
    return cache
  end
end

#parse_data_cache_ids(parse_data, jobs, cache_ids, nitems, page) ⇒ Object 



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# File 'lib/pmux-logview/log_parser.rb', line 206

def parse_data_cache_ids parse_data, jobs, cache_ids, nitems, page 
  start_idx = nitems * page
  if start_idx >= (cache_ids.length - 1)
     return
  end
  for idx in start_idx..cache_ids.length - 1
    parse_data[cache_ids[idx]] = jobs[cache_ids[idx]]
    nitems -= 1
    if nitems == 0
      break
    end
  end
end

#parse_log_dispatcher(user) ⇒ Object 



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# File 'lib/pmux-logview/log_parser.rb', line 347

def parse_log_dispatcher user
  parse_data = []
  file_path = File.expand_path(["~" + user, @@pmux_log_path, @@dispatcher_log].join(File::SEPARATOR))
  begin
    f = File.open(file_path)
    begin
      f.seek(-@@max_dispatcher_log_size, IO::SEEK_END)
    rescue
    end
    while ln = f.gets
        parse_data.push(ln)
    end
    partial_line = parse_data.shift()
  ensure
    f.close() if !f.nil?
  end
  return parse_data
end

#parse_log_job(user, data) ⇒ Object 



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# File 'lib/pmux-logview/log_parser.rb', line 220

def parse_log_job user, data
  new_jobs_cookie = DateTime.now().strftime("%Q").to_i 
  jobs = {}
  new_cache_ids = []
  update_ids = []
  cache_file_path = [@cache_dir_path, user].join(File::SEPARATOR)
  cache = load_cache(cache_file_path)
  need_save_cache = false
  for log_path in [@@pmux_log_path]
    files = get_files(user, log_path)
    for file in files
      job_id = File::basename(file).sub(".yml", "")
      if cache.key?(job_id)
        jobs[job_id] = cache[job_id]
        add_cache_ids(new_cache_ids, jobs, job_id, cache[job_id], data["sort_key"], data["sort_order"])
        update_ids.push(job_id) if data["jobs_cookie"] > 0 && data["jobs_cookie"] <= cache[job_id]["end_time_msec"].to_i
        next
      else
        job, cachable = fast_parse(file, job_id)
        jobs[job_id] = job
        update_ids.push(job_id)
        if cachable
          add_cache_ids(new_cache_ids, jobs, job_id, job, data["sort_key"], data["sort_order"])
          need_save_cache = true
        end
      end
    end
  end
  save_cache(cache_file_path, jobs, new_cache_ids) if need_save_cache || cache.length != new_cache_ids.length
  parse_data = { "jobs" => {}, "jobs_cookie" => new_jobs_cookie}
  if data["type"] == "archive"
    parse_data_cache_ids(parse_data["jobs"], jobs, new_cache_ids, data["nitems"], data["page"])
  end
  for job_id in update_ids
    parse_data["jobs"][job_id] = jobs[job_id] if jobs.key?(job_id)
  end
  return parse_data
end

#parse_log_job_detail(user, job_id) ⇒ Object 



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# File 'lib/pmux-logview/log_parser.rb', line 322

def parse_log_job_detail user, job_id
  file_path = File.expand_path(["~" + user, @@pmux_log_path, job_id + ".yml"].join(File::SEPARATOR))
  if !File.exist?(file_path)
    file_path = File.expand_path(["~" + user, @@pmux_old_log_path, job_id + ".yml"].join(File::SEPARATOR))
    if !File.exist?(file_path)
      return nil
    end
  end
  docs = full_parse(file_path)
  parse_data = []
  for idx in [0, 1, 2]
    if idx == 0 && !docs[idx].nil?
      docs[idx]["job_started_at_msec"] = docs[idx]["job_started_at"].strftime("%Q") if !docs[idx]["job_started_at"].nil?
    elsif idx == 2 && !docs[idx].nil?
      docs[idx]["job_finished_at_msec"] = docs[idx]["job_finished_at"].strftime("%Q") if !docs[idx]["job_finished_at"].nil?
    end
    if docs[idx].nil?
        parse_data.push({})
    else
        parse_data.push(docs[idx])
    end
  end
  return parse_data
end

#save_cache(file_path, jobs, cachable_ids) ⇒ Object 



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# File 'lib/pmux-logview/log_parser.rb', line 117

def save_cache file_path, jobs, cachable_ids
  cache = {}
  for job_id in cachable_ids
      cache[job_id] = jobs[job_id]
  end
  FileUtils.mkdir_p(@cache_dir_path) if !File.exist?(@cache_dir_path)
  begin
    File.open(file_path, File::RDWR|File::CREAT, 0644) {|f|
      f.flock(File::LOCK_EX)
      f.rewind()
      Marshal.dump(cache, f)
      f.flush()
      f.truncate(f.pos)
      f.flock(File::LOCK_UN)
    }
  rescue
    @logger.warn("cannot save cache file (#{file_path})")
  end
end

#set_cache_dir_path(cache_dir_path) ⇒ Object 



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# File 'lib/pmux-logview/log_parser.rb', line 366

def set_cache_dir_path cache_dir_path
  @cache_dir_path = cache_dir_path
end