#!/bin/bash
# Exit immediately if anything goes wrong, instead of making things worse.
set -e

if [[ ! -z $BOOTSTRAP_HTTP_PROXY ]] || [[ ! -z $BOOTSTRAP_HTTPS_PROXY ]]  {
  echo "Testing configured proxies..."
  source $REPO_ROOT/bootstrap/shared/shared_proxy_setup.sh
}

global REQUIRED_VARS := '( 'BOOTSTRAP_CACHE_DIR REPO_ROOT )
check_for_envvars $(REQUIRED_VARS[@])

# List of binary versions to download
source $REPO_ROOT/bootstrap/config/build_bins_versions.sh

# Create directory for download cache.
mkdir -p $BOOTSTRAP_CACHE_DIR

# download_file wraps the usual behavior of curling a remote URL to a local file
proc download_file {
  global FILE := $1
  global URL := $2

  # remove failed file download
  if [[ -f $BOOTSTRAP_CACHE_DIR/$FILE && ! -f $BOOTSTRAP_CACHE_DIR/${FILE}_downloaded ]] {
    rm -f $BOOTSTRAP_CACHE_DIR/$FILE
  }

  if [[ ! -f $BOOTSTRAP_CACHE_DIR/$FILE && ! -f $BOOTSTRAP_CACHE_DIR/${FILE}_downloaded ]] {
    echo $FILE
    rm -f $BOOTSTRAP_CACHE_DIR/$FILE
    curl -L --progress-bar -o $BOOTSTRAP_CACHE_DIR/$FILE $URL
    if [[ $? != 0 ]] {
      echo "Received error when attempting to download from $(URL)."
    }
    touch $BOOTSTRAP_CACHE_DIR/$(FILE)_downloaded
  }
}

# cleanup_cookbook removes all but the specified cookbook version so that we
# don't keep old cookbook versions and clobber them when decompressing
proc cleanup_cookbook {
  global COOKBOOK := $1
  global VERSION_TO_KEEP := $2

  # this syntax should work with both BSD and GNU find (for building on OS X and Linux)
  find $(BOOTSTRAP_CACHE_DIR)/cookbooks/ -name $(COOKBOOK)-'*'.tar.gz -and -not -name $(COOKBOOK)-$(VERSION_TO_KEEP).tar.gz -delete && true
  find $(BOOTSTRAP_CACHE_DIR)/cookbooks/ -name $(COOKBOOK)-'*'.tar.gz_downloaded -and -not -name $(COOKBOOK)-$(VERSION_TO_KEEP).tar.gz_downloaded -delete && true
}

# download_cookbook wraps download_file for retrieving cookbooks
proc download_cookbook {
  global COOKBOOK := $1
  global VERSION_TO_GET := $2

  download_file cookbooks/$(COOKBOOK)-$(VERSION_TO_GET).tar.gz http://cookbooks.opscode.com/api/v1/cookbooks/$(COOKBOOK)/versions/$(VERSION_TO_GET)/download
}

# cleanup_and_download_cookbook wraps both cleanup_cookbook and download_cookbook
proc cleanup_and_download_cookbook {
  global COOKBOOK := $1
  global TARGET_VERSION := $2

  cleanup_cookbook $(COOKBOOK) $(TARGET_VERSION)
  download_cookbook $(COOKBOOK) $(TARGET_VERSION)
}

# Clones a repo and attempts to pull updates if requested version does not exist
proc clone_repo {
  global URL := $1
  global DIR := $2
  global VER := $3

  if [[ -d $BOOTSTRAP_CACHE_DIR/$DIR/.git ]] {
    git -C $BOOTSTRAP_CACHE_DIR/$DIR log --pretty=format:'%H' | \
    grep -q $VER || \
    git -C $BOOTSTRAP_CACHE_DIR/$DIR pull
  } else {
    git clone $URL $BOOTSTRAP_CACHE_DIR/$DIR
  }
}

# This uses ROM-o-Matic to generate a custom PXE boot ROM.
# (doesn't use the function because of the unique curl command)
global ROM := 'gpxe-1.0.1-80861004.rom'
if [[ -f $BOOTSTRAP_CACHE_DIR/$ROM && ! -f $BOOTSTRAP_CACHE_DIR/${ROM}_downloaded ]] {
  rm -f $BOOTSTRAP_CACHE_DIR/$ROM
}
if [[ ! -f $BOOTSTRAP_CACHE_DIR/$ROM && ! -f $BOOTSTRAP_CACHE_DIR/${ROM}_downloaded ]] {
  echo $ROM
  rm -f $BOOTSTRAP_CACHE_DIR/$ROM
  curl -L --progress-bar -o $BOOTSTRAP_CACHE_DIR/$ROM "http://rom-o-matic.net/gpxe/gpxe-1.0.1/contrib/rom-o-matic/build.php" -H "Origin: http://rom-o-matic.net" -H "Host: rom-o-matic.net" -H "Content-Type: application/x-www-form-urlencoded" -H "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8" -H "Referer: http://rom-o-matic.net/gpxe/gpxe-1.0.1/contrib/rom-o-matic/build.php" -H "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3" --data "version=1.0.1&use_flags=1&ofmt=ROM+binary+%28flashable%29+image+%28.rom%29&nic=all-drivers&pci_vendor_code=8086&pci_device_code=1004&PRODUCT_NAME=&PRODUCT_SHORT_NAME=gPXE&CONSOLE_PCBIOS=on&BANNER_TIMEOUT=20&NET_PROTO_IPV4=on&COMCONSOLE=0x3F8&COMSPEED=115200&COMDATA=8&COMPARITY=0&COMSTOP=1&DOWNLOAD_PROTO_TFTP=on&DNS_RESOLVER=on&NMB_RESOLVER=off&IMAGE_ELF=on&IMAGE_NBI=on&IMAGE_MULTIBOOT=on&IMAGE_PXE=on&IMAGE_SCRIPT=on&IMAGE_BZIMAGE=on&IMAGE_COMBOOT=on&AUTOBOOT_CMD=on&NVO_CMD=on&CONFIG_CMD=on&IFMGMT_CMD=on&IWMGMT_CMD=on&ROUTE_CMD=on&IMAGE_CMD=on&DHCP_CMD=on&SANBOOT_CMD=on&LOGIN_CMD=on&embedded_script=&A=Get+Image"
  touch $BOOTSTRAP_CACHE_DIR/$(ROM)_downloaded
}

# Obtain an Ubuntu netboot image to be used for PXE booting.
download_file ubuntu-14.04-mini.iso http://archive.ubuntu.com/ubuntu/dists/trusty-updates/main/installer-amd64/current/images/netboot/mini.iso

# Obtain the VirtualBox guest additions ISO for use with Ansible.
global VBOX_VERSION := '5.0.10'
global VBOX_ADDITIONS := "VBoxGuestAdditions_$VBOX_VERSION.iso"
download_file $VBOX_ADDITIONS http://download.virtualbox.org/virtualbox/$VBOX_VERSION/$VBOX_ADDITIONS

# Obtain a Vagrant Trusty box.
global BOX := 'trusty-server-cloudimg-amd64-vagrant-disk1.box'
download_file $BOX http://cloud-images.ubuntu.com/vagrant/trusty/current/$BOX

# Obtain Chef client and server DEBs.
global CHEF_CLIENT_DEB := $(CHEF_CLIENT_DEB:-chef_12.9.41-1_amd64.deb)
global CHEF_SERVER_DEB := $(CHEF_SERVER_DEB:-chef-server-core_12.6.0-1_amd64.deb)
download_file $CHEF_CLIENT_DEB https://packages.chef.io/stable/ubuntu/10.04/$CHEF_CLIENT_DEB
download_file $CHEF_SERVER_DEB https://packages.chef.io/stable/ubuntu/14.04/$CHEF_SERVER_DEB

# Pull needed cookbooks from the Chef Supermarket (and remove the previous
# versions if present). Versions are pulled from build_bins_versions.sh.
mkdir -p $BOOTSTRAP_CACHE_DIR/cookbooks
cleanup_and_download_cookbook apt $(VER_APT_COOKBOOK)
cleanup_and_download_cookbook chef-client $(VER_CHEF_CLIENT_COOKBOOK)
cleanup_and_download_cookbook chef_handler $(VER_CHEF_HANDLER_COOKBOOK)
cleanup_and_download_cookbook concat $(VER_CONCAT_COOKBOOK)
cleanup_and_download_cookbook cron $(VER_CRON_COOKBOOK)
cleanup_and_download_cookbook hostsfile $(VER_HOSTSFILE_COOKBOOK)
cleanup_and_download_cookbook logrotate $(VER_LOGROTATE_COOKBOOK)
cleanup_and_download_cookbook ntp $(VER_NTP_COOKBOOK)
cleanup_and_download_cookbook ubuntu $(VER_UBUNTU_COOKBOOK)
cleanup_and_download_cookbook windows $(VER_WINDOWS_COOKBOOK)
cleanup_and_download_cookbook yum $(VER_YUM_COOKBOOK)

# Pull knife-acl gem.
download_file knife-acl-1.0.2.gem https://rubygems.global.ssl.fastly.net/gems/knife-acl-1.0.2.gem

# Pull needed gems for fpm.
global GEMS := '( 'arr-pm-0.0.10 backports-3.6.4 cabin-0.7.1 childprocess-0.5.6 clamp-0.6.5 ffi-1.9.8
       fpm-1.3.3 json-1.8.2 )
mkdir -p $BOOTSTRAP_CACHE_DIR/fpm_gems
for GEM in [$(GEMS[@])] {
  download_file fpm_gems/$GEM.gem https://rubygems.global.ssl.fastly.net/gems/$GEM.gem
}

# Pull needed gems for fluentd.
global GEMS := '( 'excon-0.45.3
       multi_json-1.11.2 multipart-post-2.0.0 faraday-0.9.1
       elasticsearch-api-1.0.12 elasticsearch-transport-1.0.12
       elasticsearch-1.0.12 fluent-plugin-elasticsearch-0.9.0 )
mkdir -p $BOOTSTRAP_CACHE_DIR/fluentd_gems
for GEM in [$(GEMS[@])] {
  download_file fluentd_gems/$GEM.gem https://rubygems.global.ssl.fastly.net/gems/$GEM.gem
}

# Obtain Cirros image.
download_file cirros-0.3.4-x86_64-disk.img http://download.cirros-cloud.net/0.3.4/cirros-0.3.4-x86_64-disk.img

# Obtain various items used for monitoring.
# Remove obsolete kibana package
rm -f $BOOTSTRAP_CACHE_DIR/kibana-4.0.2-linux-x64.tar.gz_downloaded $BOOTSTRAP_CACHE_DIR/kibana-4.0.2-linux-x64.tar.gz
# Remove obsolete cached items for BrightCoveOS Diamond
rm -rf $BOOTSTRAP_CACHE_DIR/diamond_downloaded $BOOTSTRAP_CACHE_DIR/diamond


clone_repo https://github.com/python-diamond/Diamond python-diamond $VER_DIAMOND
clone_repo https://github.com/mobz/elasticsearch-head elasticsearch-head $VER_ESPLUGIN

download_file pyrabbit-1.0.1.tar.gz https://pypi.python.org/packages/source/p/pyrabbit/pyrabbit-1.0.1.tar.gz
download_file requests-aws-0.1.6.tar.gz https://pypi.python.org/packages/source/r/requests-aws/requests-aws-0.1.6.tar.gz
download_file pyzabbix-0.7.3.tar.gz https://pypi.python.org/packages/source/p/pyzabbix/pyzabbix-0.7.3.tar.gz
download_file pagerduty-zabbix-proxy.py https://gist.githubusercontent.com/ryanhoskin/202a1497c97b0072a83a/raw/96e54cecdd78e7990bb2a6cc8f84070599bdaf06/pd-zabbix-proxy.py

download_file carbon-$(VER_GRAPHITE_CARBON).tar.gz http://pypi.python.org/packages/source/c/carbon/carbon-$(VER_GRAPHITE_CARBON).tar.gz
download_file whisper-$(VER_GRAPHITE_WHISPER).tar.gz http://pypi.python.org/packages/source/w/whisper/whisper-$(VER_GRAPHITE_WHISPER).tar.gz
download_file graphite-web-$(VER_GRAPHITE_WEB).tar.gz http://pypi.python.org/packages/source/g/graphite-web/graphite-web-$(VER_GRAPHITE_WEB).tar.gz

# Obtain packages for Rally. There are a lot.
# for future reference, to install files from this cache use pip install --no-index -f file:///path/to/files rally
global RALLY_PACKAGES := '( 'Babel-1.3.tar.gz
Jinja2-2.7.3.tar.gz
Mako-1.0.1.tar.gz
MarkupSafe-0.23.tar.gz
PyYAML-3.11.tar.gz
Pygments-2.0.2.tar.gz
SQLAlchemy-0.9.9.tar.gz
Sphinx-1.2.3.tar.gz
Tempita-0.5.2.tar.gz
alembic-0.7.6.tar.gz
anyjson-0.3.3.tar.gz
appdirs-1.4.0.tar.gz
argparse-1.3.0.tar.gz
boto-2.38.0.tar.gz
cffi-1.1.0.tar.gz
cliff-1.12.0.tar.gz
cliff-tablib-1.1.tar.gz
cmd2-0.6.8.tar.gz
cryptography-0.9.tar.gz
debtcollector-0.4.0.tar.gz
decorator-3.4.2.tar.gz
docutils-0.12.tar.gz
ecdsa-0.13.tar.gz
enum34-1.0.4.tar.gz
extras-0.0.3.tar.gz
fixtures-1.2.0.tar.gz
futures-3.0.2.tar.gz
httplib2-0.9.1.tar.gz
idna-2.0.tar.gz
ipaddress-1.0.7.tar.gz
iso8601-0.1.10.tar.gz
jsonpatch-1.11.tar.gz
jsonpointer-1.9.tar.gz
jsonschema-2.4.0.tar.gz
linecache2-1.0.0.tar.gz
lxml-3.4.4.tar.gz
msgpack-python-0.4.6.tar.gz
netaddr-0.7.14.tar.gz
netifaces-0.10.4.tar.gz
ordereddict-1.1.tar.gz
os-client-config-1.2.0.tar.gz
oslo.config-1.11.0.tar.gz
oslo.context-0.3.0.tar.gz
oslo.db-1.9.0.tar.gz
oslo.i18n-1.6.0.tar.gz
oslo.log-1.2.0.tar.gz
oslo.serialization-1.5.0.tar.gz
oslo.utils-1.5.0.tar.gz
paramiko-1.15.2.tar.gz
pbr-1.0.1.tar.gz
pip-7.0.3.tar.gz
psycopg2-2.6.tar.gz
pyOpenSSL-0.15.1.tar.gz
pyasn1-0.1.7.tar.gz
pycparser-2.13.tar.gz
pycrypto-2.6.1.tar.gz
pyparsing-2.0.3.tar.gz
python-ceilometerclient-1.2.0.tar.gz
python-cinderclient-1.2.1.tar.gz
python-designateclient-1.2.0.tar.gz
python-glanceclient-0.18.0.tar.gz
python-heatclient-0.6.0.tar.gz
python-ironicclient-0.6.0.tar.gz
python-keystoneclient-1.5.0.tar.gz
python-mimeparse-0.1.4.tar.gz
python-neutronclient-2.5.0.tar.gz
python-novaclient-2.25.0.tar.gz
python-openstackclient-1.3.0.tar.gz
python-saharaclient-0.9.0.tar.gz
python-subunit-1.1.0.tar.gz
python-swiftclient-2.4.0.tar.gz
python-troveclient-1.1.0.tar.gz
python-zaqarclient-0.1.1.tar.gz
pytz-2015.4.tar.gz
rally-0.0.4.tar.gz
requests-2.7.0.tar.gz
setuptools-17.0.tar.gz
simplejson-3.7.2.tar.gz
six-1.9.0.tar.gz
sqlalchemy-migrate-0.9.6.tar.gz
sqlparse-0.1.15.tar.gz
stevedore-1.4.0.tar.gz
tablib-0.10.0.tar.gz
testresources-0.2.7.tar.gz
testscenarios-0.5.0.tar.gz
testtools-1.8.0.tar.gz
traceback2-1.4.0.tar.gz
unittest2-1.0.1.tar.gz
warlock-1.1.0.tar.gz
wrapt-1.10.4.tar.gz )

# if on OS X, use BSD sed, otherwise assume GNU sed
if [[ $(uname) == "Darwin" ]] { global SED := '"sed -E'"; } else { global SED := '"sed -r'"; }
mkdir -p $BOOTSTRAP_CACHE_DIR/rally
for RALLY_PACKAGE in [$(RALLY_PACKAGES[@])] {
  global BARE_PACKAGE_NAME := $[echo $RALLY_PACKAGE | $SED 's/^(.+)-.+$/\1/]
  download_file rally/$RALLY_PACKAGE https://pypi.python.org/packages/source/$[echo $RALLY_PACKAGE | cut -c1 -]/$BARE_PACKAGE_NAME/$RALLY_PACKAGE
}

# ..and for the one package that has to be a special snowflake and not fit into
# the above scheme because of capitalization weirdness
download_file rally/prettytable-0.7.2.tar.gz https://pypi.python.org/packages/source/P/PrettyTable/prettytable-0.7.2.tar.gz
(CommandList
  children: [
    (C {(set)} {(-e)})
    (If
      arms: [
        (if_arm
          cond: [
            (Sentence
              child: 
                (AndOr
                  children: [
                    (DBracket
                      expr: 
                        (LogicalNot
                          child: 
                            (BoolUnary
                              op_id: BoolUnary_z
                              child: {($ VSub_Name "$BOOTSTRAP_HTTP_PROXY")}
                            )
                        )
                    )
                    (DBracket
                      expr: 
                        (LogicalNot
                          child: 
                            (BoolUnary
                              op_id: BoolUnary_z
                              child: {($ VSub_Name "$BOOTSTRAP_HTTPS_PROXY")}
                            )
                        )
                    )
                  ]
                  op_id: Op_DPipe
                )
              terminator: <Op_Semi ";">
            )
          ]
          action: [
            (C {(echo)} {(DQ ("Testing configured proxies..."))})
            (C {(source)} {($ VSub_Name "$REPO_ROOT") (/bootstrap/shared/shared_proxy_setup.sh)})
          ]
          spids: [-1 37]
        )
      ]
      spids: [-1 52]
    )
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:REQUIRED_VARS)
          op: Equal
          rhs: {(ArrayLiteralPart words:[{(BOOTSTRAP_CACHE_DIR)}{(REPO_ROOT)}])}
          spids: [55]
        )
      ]
      spids: [55]
    )
    (C {(check_for_envvars)} 
      {
        (BracedVarSub
          token: <VSub_Name REQUIRED_VARS>
          bracket_op: (WholeArray op_id:Lit_At)
          spids: [66 71]
        )
      }
    )
    (C {(source)} {($ VSub_Name "$REPO_ROOT") (/bootstrap/config/build_bins_versions.sh)})
    (C {(mkdir)} {(-p)} {($ VSub_Name "$BOOTSTRAP_CACHE_DIR")})
    (FuncDef
      name: download_file
      body: 
        (BraceGroup
          children: [
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:FILE)
                  op: Equal
                  rhs: {($ VSub_Number "$1")}
                  spids: [103]
                )
              ]
              spids: [103]
            )
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:URL)
                  op: Equal
                  rhs: {($ VSub_Number "$2")}
                  spids: [107]
                )
              ]
              spids: [107]
            )
            (If
              arms: [
                (if_arm
                  cond: [
                    (Sentence
                      child: 
                        (DBracket
                          expr: 
                            (LogicalAnd
                              left: 
                                (BoolUnary
                                  op_id: BoolUnary_f
                                  child: 
                                    {($ VSub_Name "$BOOTSTRAP_CACHE_DIR") (/) ($ VSub_Name "$FILE")}
                                )
                              right: 
                                (LogicalNot
                                  child: 
                                    (BoolUnary
                                      op_id: BoolUnary_f
                                      child: 
                                        {($ VSub_Name "$BOOTSTRAP_CACHE_DIR") (/) (${ VSub_Name FILE) 
                                          (_downloaded)
                                        }
                                    )
                                )
                            )
                        )
                      terminator: <Op_Semi ";">
                    )
                  ]
                  action: [
                    (C {(rm)} {(-f)} {($ VSub_Name "$BOOTSTRAP_CACHE_DIR") (/) ($ VSub_Name "$FILE")})
                  ]
                  spids: [-1 142]
                )
              ]
              spids: [-1 154]
            )
            (If
              arms: [
                (if_arm
                  cond: [
                    (Sentence
                      child: 
                        (DBracket
                          expr: 
                            (LogicalAnd
                              left: 
                                (LogicalNot
                                  child: 
                                    (BoolUnary
                                      op_id: BoolUnary_f
                                      child: 
                                        {($ VSub_Name "$BOOTSTRAP_CACHE_DIR") (/) 
                                          ($ VSub_Name "$FILE")
                                        }
                                    )
                                )
                              right: 
                                (LogicalNot
                                  child: 
                                    (BoolUnary
                                      op_id: BoolUnary_f
                                      child: 
                                        {($ VSub_Name "$BOOTSTRAP_CACHE_DIR") (/) (${ VSub_Name FILE) 
                                          (_downloaded)
                                        }
                                    )
                                )
                            )
                        )
                      terminator: <Op_Semi ";">
                    )
                  ]
                  action: [
                    (C {(echo)} {($ VSub_Name "$FILE")})
                    (C {(rm)} {(-f)} {($ VSub_Name "$BOOTSTRAP_CACHE_DIR") (/) ($ VSub_Name "$FILE")})
                    (C {(curl)} {(-L)} {(--progress-bar)} {(-o)} 
                      {($ VSub_Name "$BOOTSTRAP_CACHE_DIR") (/) ($ VSub_Name "$FILE")} {($ VSub_Name "$URL")}
                    )
                    (If
                      arms: [
                        (if_arm
                          cond: [
                            (Sentence
                              child: 
                                (DBracket
                                  expr: 
                                    (BoolBinary
                                      op_id: BoolBinary_GlobNEqual
                                      left: {($ VSub_QMark "$?")}
                                      right: {(0)}
                                    )
                                )
                              terminator: <Op_Semi ";">
                            )
                          ]
                          action: [
                            (C {(echo)} 
                              {
                                (DQ ("Received error when attempting to download from ") 
                                  (${ VSub_Name URL) (.)
                                )
                              }
                            )
                          ]
                          spids: [-1 231]
                        )
                      ]
                      spids: [-1 245]
                    )
                    (C {(touch)} 
                      {($ VSub_Name "$BOOTSTRAP_CACHE_DIR") (/) (${ VSub_Name FILE) (_downloaded)}
                    )
                  ]
                  spids: [-1 186]
                )
              ]
              spids: [-1 258]
            )
          ]
          spids: [100]
        )
      spids: [96 99]
    )
    (FuncDef
      name: cleanup_cookbook
      body: 
        (BraceGroup
          children: [
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:COOKBOOK)
                  op: Equal
                  rhs: {($ VSub_Number "$1")}
                  spids: [276]
                )
              ]
              spids: [276]
            )
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:VERSION_TO_KEEP)
                  op: Equal
                  rhs: {($ VSub_Number "$2")}
                  spids: [280]
                )
              ]
              spids: [280]
            )
            (AndOr
              children: [
                (C {(find)} {(${ VSub_Name BOOTSTRAP_CACHE_DIR) (/cookbooks/)} {(-name)} 
                  {(${ VSub_Name COOKBOOK) (-) (EscapedLiteralPart token:<Lit_EscapedChar "\\*">) 
                    (.tar.gz)
                  } {(-and)} {(-not)} {(-name)} {(${ VSub_Name COOKBOOK) (-) (${ VSub_Name VERSION_TO_KEEP) (.tar.gz)} 
                  {(-delete)}
                )
                (C {(true)})
              ]
              op_id: Op_DAmp
            )
            (AndOr
              children: [
                (C {(find)} {(${ VSub_Name BOOTSTRAP_CACHE_DIR) (/cookbooks/)} {(-name)} 
                  {(${ VSub_Name COOKBOOK) (-) (EscapedLiteralPart token:<Lit_EscapedChar "\\*">) 
                    (.tar.gz_downloaded)
                  } {(-and)} {(-not)} {(-name)} 
                  {(${ VSub_Name COOKBOOK) (-) (${ VSub_Name VERSION_TO_KEEP) (.tar.gz_downloaded)} {(-delete)}
                )
                (C {(true)})
              ]
              op_id: Op_DAmp
            )
          ]
          spids: [273]
        )
      spids: [269 272]
    )
    (FuncDef
      name: download_cookbook
      body: 
        (BraceGroup
          children: [
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:COOKBOOK)
                  op: Equal
                  rhs: {($ VSub_Number "$1")}
                  spids: [377]
                )
              ]
              spids: [377]
            )
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:VERSION_TO_GET)
                  op: Equal
                  rhs: {($ VSub_Number "$2")}
                  spids: [381]
                )
              ]
              spids: [381]
            )
            (C {(download_file)} 
              {(cookbooks/) (${ VSub_Name COOKBOOK) (-) (${ VSub_Name VERSION_TO_GET) (.tar.gz)} 
              {(http) (Lit_Other ":") (//cookbooks.opscode.com/api/v1/cookbooks/) 
                (${ VSub_Name COOKBOOK) (/versions/) (${ VSub_Name VERSION_TO_GET) (/download)
              }
            )
          ]
          spids: [374]
        )
      spids: [370 373]
    )
    (FuncDef
      name: cleanup_and_download_cookbook
      body: 
        (BraceGroup
          children: [
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