#!/bin/bash
#------------------------------------------------------------------------------
# Copyright and license info is available in the LICENSE file included with
# the Server Deployment Package (SDP), and also available online:
# https://swarm.workshop.perforce.com/projects/perforce-software-sdp/view/main/LICENSE
#------------------------------------------------------------------------------
# This is a reference (example) pull-archive trigger for use with an Edge/Commit server topology - the 
# Edge server uses this trigger to pull files from its upstream Commit server,
# using Aspera for fast file transfer (rather than builtin pull threads).
# Aspera uses UDP rather than TCP and is typically much faster, especially with high latency
# connections.
# See: https://community.perforce.com/s/article/15337
#------------------------------------------------------------------------------
# Read filename to get list of files to copy from commit to edge.
# Do the copy using ascp (Aspera file copy)
#
# configurable pull.trigger.dir should be set to a temp folder like /p4/1/tmp
#
# Startup commands look like:
# startup.2=pull -i 1 -u --trigger --batch=1000
#
# The trigger entry for the pull commands looks like this:
#
#   pull_archive pull-archive pull "/p4/common/bin/triggers/pull.sh %archiveList%"
#
# There are some pull trigger options, but the are not necessary with Aspera.
# Aspera works best if you give it the max batch size of 1000 and set up 1 or more
# threads. Note, that each thread will use the max bandwidth you specify, so a 
# single pull --trigger thread is probably all you will want.
#
# The ascp user needs to have ssl public keys set up or export ASPERA_SCP_PASS.
# The ascp user should be set up with the target as / with full write access to the volume where
# the depot files are located. The easiest way to do that is to use the same user that is 
# running the p4d service.
#
# WARNING - ensure ascp is correctly configured and working in your environment:
# https://www-01.ibm.com/support/docview.wss?uid=ibm10747281
# (search for "ascp connectivity testing")
#
# Standard SDP environment is assumed, e.g P4USER, P4PORT, OSUSER, P4BIN, etc.
# are set, PATH is appropriate, and a super user is logged in with a non-expiring
# ticket.

set -u

function msg () { echo -e "$*"; }
function bail () { msg "\nError: ${1:-Unknown Error}\n"; exit ${2:-1}; }

[[ $# -eq 1 ]] || bail "Bad Usage!\n\nUsage:\n\t$0 %archiveList%\n\n"

LOGFILE=$LOGS/pull.log

fileList=$1

date=$(date '+%Y-%m-%d %H:%M:%S')
echo "$date $fileList" >> $LOGFILE

# Set this value appropriately, or to ensure it is not accidentally checked in,
# set it in the appropriate SDP file, e.g. /p4/common/config/p4_1.vars
export ASPERA_SCP_PASS=xxxx

[[ -f $fileList ]] || { echo "$fileList missing!" >> $LOGFILE; exit 1; }

# Note: the -l parameter should be adjusted to how much bandwidth you want Aspera to use
# in your environment.

# Optional for debugging. See above for checking ascp connectivity
# echo "ascp -P 33001 -l 500M -d --mode=recv --file-pair-list=$fileList --user=$OSUSER --host=$P4MASTER --partial-file-suffix=asp /"" >> $LOGFILE

ascp -P 33001 -l 500M -d --mode=recv --file-pair-list=$fileList --user=$OSUSER --host=$P4MASTER --partial-file-suffix=asp / >> $LOGFILE 2>&1
if [[ $? -ne 0 ]]; then
    bail "$0: failed to execute the ascp command, contact Perforce admin.\n"
fi

exit 0
