From 97fdefab064f63642fa3ece05b807d29b459df31 Mon Sep 17 00:00:00 2001 From: Hui Lan Date: Wed, 4 Dec 2019 19:03:19 +0800 Subject: brain: add python and R code to local repository. --- Code/update_network_by_force.py | 113 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 113 insertions(+) create mode 100644 Code/update_network_by_force.py (limited to 'Code/update_network_by_force.py') diff --git a/Code/update_network_by_force.py b/Code/update_network_by_force.py new file mode 100644 index 0000000..7ba8c87 --- /dev/null +++ b/Code/update_network_by_force.py @@ -0,0 +1,113 @@ +# Usage: python3 update_network_by_force.py +# Purpose: update_network.py could take a few days to run. Run this script to harvest new edges everyday. +# +# Revision history: +# Last modified: 24 Nov 2019, hui + +import os, sys +import glob +import time +from datetime import datetime +from configure import HISTORY_DIR, HISTORY_DIR2, UPDATE_NETWORK_LOG_FILE, MERGED_EDGE_FILE, EDGE_POOL_DIR + +########## Helper functions ####################### +def write_log_file(s, fname): + f = open(fname, 'a') + curr_time = datetime.now().strftime('%Y-%m-%d %H:%M') + s = '[' + curr_time + ']: ' + s + if not '\n' in s: + s += '\n' + f.write(s) + f.close() + print('Log: %s' % (s.strip())) + + +def num_line(fname): + ''' Return number of lines in file fname. ''' + if not os.path.exists(fname): + return 0 + f = open(fname) + lines = f.readlines() + f.close() + return len(lines) + + +def lines_with_10_fields(s): + result = [] + for line in s.split('\n'): + line = line.strip() + if len(line.split('\t')) == 10: + result.append(line) + return result + + +def age_of_file_in_seconds(fname): + ''' Return age of fname in days. ''' + st = os.stat(fname) + seconds = time.time() - st.st_mtime + return seconds + +def concatenate_edge_files(fname_lst, fname_out): + fout = open(fname_out, 'w') + for fname in fname_lst: + f = open(fname) + s = f.read() + f.close() + # Make sure each edge has 10 fields before writing. + lines = lines_with_10_fields(s) + if lines != []: + write_log_file('[update_network_by_force.py] In function concatenate_edge_files. File %s has %d rows with 10 columns.' % (fname, len(lines)), UPDATE_NETWORK_LOG_FILE) + fout.write('\n'.join(lines) + '\n') + else: + write_log_file('[update_network_by_force.py] In function concatenate_edge_files. Check file %s. It has no rows with 10 fields.' % (fname), UPDATE_NETWORK_LOG_FILE) + fout.close() + + +def delete_edge_files(fname_lst): + age_in_hours = 6 + for fname in fname_lst: + # Before we delete, we should make sure it is not being written. Make sure it is old enough. Otherwise, don't delete. + if age_of_file_in_seconds(fname) > age_in_hours*60*60: # 6 hours + os.remove(fname) + else: + write_log_file('[update_network_by_force.py] In function delete_edge_files. Check file %s. It is probably still being written (age less than %d hours). So I don\'t delete it.' % (fname, age_in_hours), UPDATE_NETWORK_LOG_FILE) + +########## Merge edges ####################### +# update edges.txt, a merged file from two sources, HISTORY_DIR and HISTORY_DIR2. Some new edge files are being generated ... +time.sleep(3) +edge_file_lst = [] # collect edge files. +most_recent_edge_modification_time = 0 +write_log_file('[update_network_by_force.py] Look at edge files in %s.' % (HISTORY_DIR), UPDATE_NETWORK_LOG_FILE) +for fname in glob.glob(os.path.join(HISTORY_DIR, 'edges.txt.*')): # many small edges.txt.* are to be merged + edge_file_lst.append(fname) + if os.path.getmtime(fname) > most_recent_edge_modification_time: + most_recent_edge_modification_time = os.path.getmtime(fname) + +write_log_file('[update_network_by_force.py] Look at edge files in %s.' % (HISTORY_DIR2), UPDATE_NETWORK_LOG_FILE) +for fname in glob.glob(os.path.join(HISTORY_DIR2, 'edges.txt.*')): # edges.txt.* are to be merged + edge_file_lst.append(fname) + if os.path.getmtime(fname) > most_recent_edge_modification_time: + most_recent_edge_modification_time = os.path.getmtime(fname) + + +if edge_file_lst == []: + write_log_file('[update_network_by_force.py] No edge files to merge in %s and %s.' % (HISTORY_DIR, HISTORY_DIR2), UPDATE_NETWORK_LOG_FILE) +elif os.path.getmtime(MERGED_EDGE_FILE) < most_recent_edge_modification_time: # update edges.txt only if there are newer edges to add. + # concatenate edge files into one + write_log_file('[update_network_by_force.py] Concatenate edge files in %s and %s into one file.' % (HISTORY_DIR, HISTORY_DIR2), UPDATE_NETWORK_LOG_FILE) + curr_time = datetime.now().strftime('%Y%m%d_%H%M') + concatenate_edge_files(edge_file_lst, os.path.join(EDGE_POOL_DIR, 'edges.txt.many.one.targets.' + curr_time)) + delete_edge_files(edge_file_lst) + +if os.path.getmtime(MERGED_EDGE_FILE) < os.path.getmtime(EDGE_POOL_DIR): # edge pool directory has been updated, create new edges.txt + write_log_file('[update_network_by_force.py] Make a new edges.txt from edge files in %s.' % (EDGE_POOL_DIR), UPDATE_NETWORK_LOG_FILE) + write_log_file('[update_network_by_force.py] Number of lines in the old edges.txt: %d.' % (num_line(MERGED_EDGE_FILE)), UPDATE_NETWORK_LOG_FILE) + cmd = 'python3 merge_edges.py' + os.system(cmd) + write_log_file('[update_network_by_force.py] Number of lines in the new edges.txt: %d.' % (num_line(MERGED_EDGE_FILE)), UPDATE_NETWORK_LOG_FILE) + manual_copy_commands = 'Please copy files to the web application: sudo cp /home/lanhui/brain/Data/temp/edges.txt /var/www/brain/brain/static/edges/edges.txt sudo find /home/lanhui/brain/Data/temp/html_edges -name "*.html" -exec mv -t /var/www/brain/brain/static/edges {} +' + write_log_file('[update_network_by_force.py] %s' % (manual_copy_commands), UPDATE_NETWORK_LOG_FILE) + + + +write_log_file('[update_network_by_force.py] Update done at %s.\n\n' % (datetime.now().strftime('%Y-%m-%d %H:%M:%S')), UPDATE_NETWORK_LOG_FILE) -- cgit v1.2.1