I am trying to write a function to update Data from a table saved in HBase. I have a function that will get called to Update it and I have a pretty good start but I am a little bit lost on the end of finishing it. I can update single rows based one string to another, but when comparing log times, I can not seem to figure out how to do that, since there are no set log times. I am storing all of values from the table into a dictionary. Here is my code:
def updateHBase(row):
dict = row.asDict() #create a dictionary from Row
columns = dict.keys()
for col in columns: #creates the colfamily:colname for happybase format
dict["DriveInfo:" +col] = dict.pop(col) #adds data into rows
del dict[DriveInfo:serialnumb] #removes the row key that HBase uses, serialnum
x = table.row(row.serialnum)
if (len(x) == 0) #length of row is zero, row key does not exist
table.put(row.serialnum, dict) #add new row is row key does not exist
else #check for health
if (dict['health'].lower() != 'healthy') #if the row isnt healthy... next steps
if (dict['health'].lower() != 'archived' and x['health'] == 'archived' and dict['logtime'] < x['logtime']) #update a row with a health status of archived
table.put(row.serialnum, dict)
else #if the row that is being replaced isn't archived, just replace the row
table.put(row.serialnum, dict)
return
elif (dict['logtime'] > x['logtime'] and dict['health'].lower() == 'healthy') # new log time > old log time and health is healthy, replace the row with new data
table.put(row.serialnum, dict)
else
return
EDIT: In all of my if statements should ... dict['health'] ... be x['health']?
Figured it out...
def updateHBase(row):
dict = row.asDict() #create a dictionary from Row
columns = dict.keys()
for col in columns: #creates the colfamily:colname for happybase format
dict["DriveInfo:" +col] = dict.pop(col) #adds data into rows
del dict[DriveInfo:serialnumb] #removes the row key that HBase uses, serialnum
x = table.row(row.serialnum)
if (len(x) == 0) #length of row is zero, row key does not exist
table.put(row.serialnum, dict) #add new row is row key does not exist
else #check for health
if (x['health'].lower() != 'healthy') #if the row isnt healthy... next steps
if (x['health'].lower() != 'archived' and x['health'] == 'archived') #update a row with a health status of archived
table.put(row.serialnum, dict)
else #if the row that is being replaced isn't archived, just replace the row
table.put(row.serialnum, dict)
return
elif (x['logtime'] > row.logtime and x['health'].lower() == 'healthy') # new log time > old log time and health is healthy, replace the row with new data
table.put(row.serialnum, dict)
else
return