How to use modify_managed_prefix_list method in localstack

Best Python code snippet using localstack_python

SG2PL-Batchsync.py

Source:SG2PL-Batchsync.py

...195        # Get the Prefix List info, specifically the current list version196        version = pl_info(pl, ec2remote)['Version']197        # Attempt to call the modify_managed_prefix_list with the current page of entries to remove and log the return198        try:199            response = ec2remote.modify_managed_prefix_list(200                PrefixListId=pl,201                CurrentVersion=version,202                RemoveEntries=page203            )204            version = response['PrefixList']['Version']205            message = "modify_managed_prefix_list call result: " + str(response)206            log_handler(message, 1, False, False)207        # If an exception occurs, log it, send a message via SNS and terminate the function unsuccessfully.208        except Exception as e:209            message = "Removing new CIDRs from " + str(pl) + " was unsuccessful. Error returned: " + str(e)210            log_handler(message, 3, True, True)211    return version212# Add the CIDRs specified to the Prefix List specified213def add_cidr_to_pl(pl: str, ips: set, version: str, ec2remote):214    # Create an empty list to populate the IPs as CIDRs215    entriestoadd = list()216    # Loop through the IPs and append the list with a dict with the IP in CIDR notation as a /32217    for ip in ips:218        value = {'Cidr': ip + "/32"}219        entriestoadd.append(value)220    # Log the list of dicts created above221    message = "Trying to add: " + str(entriestoadd) + " to " + str(pl) + " using version " + str(version)222    log_handler(message, 1, False, False)223    # Paginate the list into separate lists no greater than 99 CIDRs each to account for the maximum of 100224    # entries in AddEntries per modify_managed_prefix_list call225    paginatedentriestoadd = [entriestoadd[i:i + 99] for i in range(0, len(entriestoadd), 99)]226    # Log the paginated list of lists created above227    message = "Paginated list of list:: trying to remove: " + str(paginatedentriestoadd) + " from " \228              + str(pl) + " using version " + str(version)229    log_handler(message, 1, False, False)230    # Loop through the paginated list of lists for entries to add231    for page in paginatedentriestoadd:232        # Determine the current status of the Prefix List and if it is not in an acceptable state enter a loop to233        # check every second until it is ready.234        plstatus = pl_ready(pl, ec2remote)235        while not plstatus:236            time.sleep(1)237            plstatus = pl_ready(pl, ec2remote)238        # Get the Prefix List info, specifically the current list version239        version = pl_info(pl, ec2remote)['Version']240        # Attempt to call the modify_managed_prefix_list with the current page of entries to add and log the return241        try:242            response = ec2remote.modify_managed_prefix_list(243                PrefixListId=pl,244                CurrentVersion=version,245                AddEntries=page246            )247            version = response['PrefixList']['Version']248            message = "modify_managed_prefix_list call result: "+str(response)249            log_handler(message, 1, False, False)250        # If an exception occurs, log it, send a message via SNS and terminate the function unsuccessfully.251        except Exception as e:252            message = "Adding new CIDRs to "+str(pl)+" was unsuccessful. Error returned: "+str(e)253            log_handler(message, 3, True, True)254    return version255# Update CIDRs in the PL256def update_cidrs_in_pl(pl: str, ipstoremove: set, ipstoadd: set, version: str, ec2remote):257    # Create an empty list to populate the IPs as CIDRs to add258    entriestoadd = list()259    # Loop through the IPs to add and append the list with a dict with the IP in CIDR notation as a /32260    for iptoadd in ipstoadd:261        value = {'Cidr': iptoadd + "/32"}262        entriestoadd.append(value)263    # Log the list of dicts created above264    message = "Bulk update: Trying to add: " + str(entriestoadd) + " to " + str(pl) + " using version " + str(version)265    log_handler(message, 1, False, False)266    # Create an empty list to populate the IPs as CIDRs to remove267    entriestoremove = list()268    # Loop through the IPs to remove and append the list with a dict with the IP in CIDR notation as a /32269    for iptoremove in ipstoremove:270        value = {'Cidr': iptoremove + "/32"}271        entriestoremove.append(value)272    # Log the list of dicts created above273    message = "Bulk update: Trying to remove: "+str(entriestoremove)+" from "+str(pl)+" using version "+str(version)274    log_handler(message, 1, False, False)275    # Attempt to call the modify_managed_prefix_list with the entries to add and remove and log the return276    try:277        response = ec2remote.modify_managed_prefix_list(278            PrefixListId=pl,279            CurrentVersion=version,280            AddEntries=entriestoadd,281            RemoveEntries=entriestoremove282        )283        message = "modify_managed_prefix_list call result: " + str(response)284        log_handler(message, 1, False, False)285        return response['PrefixList']['Version']286    # If an exception occurs, log it, send a message via SNS and terminate the function unsuccessfully.287    except Exception as e:288        message = "Updating new CIDRs in " + str(pl) + " was unsuccessful. Error returned: " + str(e)289        log_handler(message, 3, True, True)290# Get the status of the Prefix List291def pl_ready(pl: str, ec2remote):292    # Call describe_managed_prefix_lists293    plinfodata = ec2remote.describe_managed_prefix_lists(294        PrefixListIds=[295            pl,296        ]297    )298    # Log the return299    message = "modify_managed_prefix_list call result: "+str(plinfodata)300    log_handler(message, 1, False, False)301    # Parse the current State302    plstate = plinfodata['PrefixLists'][0]['State']303    # Go through various known and documented state possibilities and return True if the Prefix List is in a state304    # ready for modification, False if it is in a state not ready for modification but should naturally turn to a305    # state that is ready later, or call the error handler with a message to send via SNS and terminate the Function306    # if it is in a state that requires user intervention before proceeding.307    if plstate == 'create-in-progress':308        message = str(pl)+" PL is in a creating state."309        log_handler(message, 3, False, True)310    elif plstate == 'create-complete':311        return True312    elif plstate == 'create-failed':313        message = "The prefix list "+str(pl)+" is in a state of creation failed. Please delete remove the" \314                        "configuration for this sync and recreate it with a new prefix list."315        log_handler(message, 3, True, True)316    elif plstate == 'modify-in-progress':317        return False318    elif plstate == 'modify-complete':319        return True320    elif plstate == 'modify-failed':321        message = "There was an error modifying prefix list "+str(pl)+". The reason was: "\322                  + str(plinfodata['PrefixLists'][0]['StateMessage'])323        log_handler(message, 3, True, True)324    elif plstate == 'restore-in-progress':325        return False326    elif plstate == 'restore-complete':327        return True328    elif plstate == 'restore-failed':329        message = "The prefix list "+str(pl)+" is in a state of restore-failed. Please correct this so the "\330                        "status becomes modify-complete for the sync to resume successfully"331        log_handler(message, 3, True, True)332    elif plstate == 'delete-in-progress':333        message = "The prefix list "+str(pl)+" is currently being deleted. Please delete the AutoSG2PL "\334                        "configuration to prevent unnecessary invocations of the associated Lambda functions."335        log_handler(message, 3, True, True)336    elif plstate == 'delete-complete':337        message = "The prefix list "+str(pl)+" has been deleted. Please delete the AutoSG2PL configuration "\338                        "to prevent unnecessary invocations of the associated Lambda functions."339        log_handler(message, 3, True, True)340    elif plstate == 'delete-failed':341        message = "The prefix list "+str(pl)+" has been unsuccessfully deleted. Please either do an update "\342                        "on the prefix list or delete it completely and delete the AutoSG2PL configuration to "\343                        "prevent unnecessary invocations of the associated Lambda functions."344        log_handler(message, 3, True, True)345    else:346        message = "The prefix list "+str(pl)+" is in an unknown state of: "+str(plstate)+" Please make an "\347                        "update so it gets into a modify-complete state."348        log_handler(message, 3, True, True)349# Resize the Prefix List to account for Max Entries350def pl_resize(pl: str, currentquota: int, newplsize: int, ec2remote):351    # Determine the optimal new size based on the configured padding percentage352    newmaxent = math.ceil(newplsize / sgrulemaxutilizationpercentage)353    # If the optimal new size exceeds the quota, send a warning via SNS and resize to 1 less than the current quota354    if newmaxent > currentquota:355        message = "The prefix list " + str(pl) + " was resized to accommodate the latest sync but below the padding " \356            "percentage threshold set due to the current Max Entries per Security Group quota. Please request an " \357            "increase in Service Quotas to allow for greater than " + str(newmaxent) + " entries per Security Group " \358            "or lower your security_group_quota_padding_percentage threshold configured on the AutoSG2PL Batch Sync " \359            "Lambda Function under Environment Variables"360        log_handler(message, 2, True, False)361        newmaxent = int(currentquota - 1)362    # Try to resize the Prefix List to the new value. If the new value exceeds a quota in another account the error363    # is handled by the Prefix List resize function itself and then caught during the Prefix List status check.364    try:365        response = ec2remote.modify_managed_prefix_list(366            PrefixListId=pl,367            MaxEntries=newmaxent368        )369        message = "modify_managed_prefix_list max entries call result: " + str(response)370        log_handler(message, 1, False, False)371        return response['PrefixList']['Version']372    # If an exception occurs, log it, send a message via SNS and terminate the function unsuccessfully.373    except Exception as e:374        message = "Updating Max Entries for " + str(pl) + " was unsuccessful. Error returned: " + str(e)375        log_handler(message, 3, True, True)376# the main lambda function handler377def lambda_handler(event, context):378    # Get the supplied Security Group and store it in a variable. If none is supplied379    if 'sg' in event.keys():...

app.py

Source:app.py

...65                    print("already in list so no action")66                else:67                    print("add")68                    if len(current_entries) + 1 != prefix_list["MaxEntries"]:69                        response = client.modify_managed_prefix_list(70                            PrefixListId=prefix_list_id,71                            MaxEntries=len(current_entries) + 172                        )73                        sleep(3)74                    response = client.modify_managed_prefix_list(75                        PrefixListId=prefix_list_id,76                        CurrentVersion=current_prefix_list_version,77                        AddEntries=[78                            {79                                'Cidr': private_id_address + "/32",80                                'Description': 'added by EventBridge Lambda'81                            },82                        ]83                    )84            # if the instance state change is 'stopping' so we remove the private IP CIDR to the Prefix List85            elif ec2_state == "stopping":86                if is_in_list:87                    print("remove")88                    response = client.modify_managed_prefix_list(89                        PrefixListId=prefix_list_id,90                        CurrentVersion=current_prefix_list_version,91                        RemoveEntries=[92                            {93                                'Cidr': private_id_address + "/32"94                            },95                        ]96                    )97                    if len(current_entries) != 1: 98                        sleep(3)99                        response = client.modify_managed_prefix_list(100                            PrefixListId=prefix_list_id,101                            MaxEntries=len(current_entries) - 1102                        )103                else:104                    print("not in list so no action")...

update-ipranges.py

Source:update-ipranges.py

...44                entry_list.append({'Cidr': ip})45            print("MODIFYING")46            print("ADDING", entry_list)47            print("REMOVING", to_remove)48            ec2.modify_managed_prefix_list(49                DryRun=False,50                PrefixListId=prefix_list_id,51                AddEntries=entry_list,52                RemoveEntries=to_remove,53                CurrentVersion=prefix_list_version54                )55            return {56                'statusCode': 200,57                'body': "Updated prefixlist"58            }59        else:60            print("Nothing to modify")61            return {62                'statusCode': 200,...

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