#!/bin/bash

cd $HOME # workaround EVG-12829
cat >> ~/.profile <<EOF
# Coredumps generated by a toolchain built mongodb can be problematic when examined with the system
# gdb.
export PATH=/opt/mongodbtoolchain/gdb/bin:$PATH
# As per below, put the user into the appropriate directory. This is where gdb is expected to be
# invoked from.
cd debug
echo "Debuggable binaries:"
ls -l mongo* | grep -v debug$
for item in "mongo" "mongod" "mongos"; do
    echo "\${item} core dumps:"
    ls -l dump_\${item}.*
done

echo "Core dumps from unknown processes (crashed processes typically found here):"
ls -l dump_* | grep -v mongo

echo
echo "To examine a core dump, type 'gdb ./<binary> ./<core file>'"
EOF

export PATH=/opt/mongodbtoolchain/gdb/bin:$PATH
echo 'if [ -f ~/.profile ]; then
    . ~/.profile
fi' >> .bash_profile

# Make a directory on the larger EBS volume. Soft-link it under the home directory. The smaller home
# volume can have trouble particularly with coredumps from sharded timeouts.
mkdir /data/debug
ln -s /data/debug .
cd debug

# As the name suggests, pretty printers. Primarily for boost::optional<T>
git clone git@github.com:ruediger/Boost-Pretty-Printer.git &

# Discover and unarchive necessary files and source code. This will put mongo binaries and their
# partner .debug files in the same top-level (`debug`) directory. Shared library files and their
# debug symbols will be dumped into a `debug/lib` directory for tidiness. The mongo
# `<reporoot>/src/` directory is soft linked as `debug/src`. The .gdbinit file assumes gdb is being
# run from the `debug` directory.
BIN_ARCHIVE=`ls /data/mci/artifacts-*compile/mongo-*.tgz`
tar --wildcards --strip-components=2 -xzf $BIN_ARCHIVE '*/bin/mongod' '*/bin/mongos' '*/bin/mongo' '*/bin/mongobridge' &
tar --wildcards --strip-components=1 -xzf $BIN_ARCHIVE '*/lib/*' &
DBG_ARCHIVE=`ls /data/mci/artifacts-*compile/debugsymbols-*.tgz`
tar --wildcards --strip-components=2 -xzf $DBG_ARCHIVE '*/bin/mongod.debug' '*/bin/mongos.debug' '*/bin/mongo.debug' '*/bin/mongobridge.debug' &
tar --wildcards --strip-components=1 -xzf $DBG_ARCHIVE '*/lib/*' &
SRC_DIR=`find /data/mci/ -maxdepth 1 | grep source`
ln -s $SRC_DIR/.gdbinit .
ln -s $SRC_DIR/src src
ln -s $SRC_DIR/buildscripts buildscripts

# Install pymongo to get the bson library for pretty-printers.
/opt/mongodbtoolchain/v3/bin/pip3 install -r $SRC_DIR/etc/pip/dev-requirements.txt &

COREDUMP_ARCHIVE=`ls /data/mci/artifacts-*/mongo-coredumps-*.tgz`
tar -xzf $COREDUMP_ARCHIVE &
echo "Waiting for background processes to complete."
wait

cat >> ~/.gdbinit <<EOF
set auto-load safe-path /
set solib-search-path ./lib/
set pagination off
set print object on
set print static-members off
set print pretty on

python
import sys
sys.path.insert(0, './Boost-Pretty-Printer')
import boost
boost.register_printers(boost_version=(1,70,0))
end
EOF

echo "dir $HOME/debug" >> ~/.gdbinit