From d8dabcfbbf9d6a6717c9fde2a698698af1f6af13 Mon Sep 17 00:00:00 2001
From: Athanasios Voutsadakis
 <athanasios.voutsadakis@digital.cabinet-office.gov.uk>
Date: Tue, 2 Jan 2018 14:24:26 +0000
Subject: [PATCH] Remove appspec and related files

These have not been used since the migration to paas, so they can be
removed.
---
 appspec.yml                         |  39 ---
 scripts/aws_change_ownership.sh     |   5 -
 scripts/aws_clear_instance.sh       |  10 -
 scripts/aws_install_dependencies.sh |   5 -
 scripts/aws_start_app.sh            |   4 -
 scripts/aws_stop_app.sh             |  15 --
 scripts/common_functions.sh         | 384 ----------------------------
 scripts/deregister_from_elb.sh      |  71 -----
 scripts/register_with_elb.sh        |  72 ------
 9 files changed, 605 deletions(-)
 delete mode 100644 appspec.yml
 delete mode 100755 scripts/aws_change_ownership.sh
 delete mode 100755 scripts/aws_clear_instance.sh
 delete mode 100755 scripts/aws_install_dependencies.sh
 delete mode 100755 scripts/aws_start_app.sh
 delete mode 100755 scripts/aws_stop_app.sh
 delete mode 100644 scripts/common_functions.sh
 delete mode 100755 scripts/deregister_from_elb.sh
 delete mode 100755 scripts/register_with_elb.sh

diff --git a/appspec.yml b/appspec.yml
deleted file mode 100644
index 0a55dcfa1..000000000
--- a/appspec.yml
+++ /dev/null
@@ -1,39 +0,0 @@
----
-files:
-  -
-    destination: /home/notify-app/notifications-admin
-    source: /
-hooks:
-  BeforeInstall:
-    - location: scripts/aws_clear_instance.sh
-      runas: root
-      timeout: 1000
-  AfterInstall:
-    -
-      location: scripts/aws_install_dependencies.sh
-      runas: root
-      timeout: 300
-    -
-      location: scripts/aws_change_ownership.sh
-      runas: root
-      timeout: 300
-  ApplicationStart:
-    -
-      location: scripts/aws_start_app.sh
-      runas: root
-      timeout: 300
-    -
-      location: scripts/register_with_elb.sh
-      runas: ubuntu
-      timeout: 300
-  ApplicationStop:
-    -
-      location: scripts/deregister_from_elb.sh
-      runas: ubuntu
-      timeout: 300
-    -
-      location: scripts/aws_stop_app.sh
-      runas: root
-      timeout: 300
-os: linux
-version: 0.0
diff --git a/scripts/aws_change_ownership.sh b/scripts/aws_change_ownership.sh
deleted file mode 100755
index e800956d3..000000000
--- a/scripts/aws_change_ownership.sh
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/bin/bash
-
-echo "Chown application to be owned by ubuntu"
-cd /home/notify-app/;
-chown -R notify-app:govuk-notify-applications notifications-admin
\ No newline at end of file
diff --git a/scripts/aws_clear_instance.sh b/scripts/aws_clear_instance.sh
deleted file mode 100755
index 1b159ddb3..000000000
--- a/scripts/aws_clear_instance.sh
+++ /dev/null
@@ -1,10 +0,0 @@
-#!/bin/bash
-
-echo "Removing application and dependencies"
-
-if [ -d "/home/notify-app/notifications-admin" ]; then
-    # Remove and re-create the directory
-    rm -rf /home/notify-app/notifications-admin
-    mkdir -p /home/notify-app/notifications-admin
-fi
-
diff --git a/scripts/aws_install_dependencies.sh b/scripts/aws_install_dependencies.sh
deleted file mode 100755
index ccf5a6578..000000000
--- a/scripts/aws_install_dependencies.sh
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/bin/bash
-
-echo "Install dependencies"
-cd /home/notify-app/notifications-admin;
-pip3 install --find-links=vendor -r /home/notify-app/notifications-admin/requirements.txt
diff --git a/scripts/aws_start_app.sh b/scripts/aws_start_app.sh
deleted file mode 100755
index b4082672a..000000000
--- a/scripts/aws_start_app.sh
+++ /dev/null
@@ -1,4 +0,0 @@
-#!/bin/bash
-
-echo "Starting application"
-sudo service notifications-admin start
\ No newline at end of file
diff --git a/scripts/aws_stop_app.sh b/scripts/aws_stop_app.sh
deleted file mode 100755
index 2b90414a1..000000000
--- a/scripts/aws_stop_app.sh
+++ /dev/null
@@ -1,15 +0,0 @@
-#!/bin/bash
-
-
-function error_exit
-{
-	echo "$1" 1>&2
-	exit 0
-}
-
-echo "Stopping application"
-if sudo service notifications-admin stop; then
-    exit 0
-else
-    error_exit "Could not stop application"
-fi
\ No newline at end of file
diff --git a/scripts/common_functions.sh b/scripts/common_functions.sh
deleted file mode 100644
index d9fa96b3b..000000000
--- a/scripts/common_functions.sh
+++ /dev/null
@@ -1,384 +0,0 @@
-#!/bin/bash
-#
-# Copyright 2014 Amazon.com, Inc. or its affiliates. All Rights Reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License").
-# You may not use this file except in compliance with the License.
-# A copy of the License is located at
-#
-#  http://aws.amazon.com/apache2.0
-#
-# or in the "license" file accompanying this file. This file is distributed
-# on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
-# express or implied. See the License for the specific language governing
-# permissions and limitations under the License.
-
-# ELB_LIST defines which Elastic Load Balancers this instance should be part of.
-# The elements in ELB_LIST should be seperated by space.
-ELB_LIST=""
-
-# Under normal circumstances, you shouldn't need to change anything below this line.
-# -----------------------------------------------------------------------------
-
-export PATH="$PATH:/usr/bin:/usr/local/bin"
-
-# If true, all messages will be printed. If false, only fatal errors are printed.
-DEBUG=true
-
-# Number of times to check for a resouce to be in the desired state.
-WAITER_ATTEMPTS=60
-
-# Number of seconds to wait between attempts for resource to be in a state.
-WAITER_INTERVAL=1
-
-# AutoScaling Standby features at minimum require this version to work.
-MIN_CLI_VERSION='1.3.25'
-
-# Usage: get_instance_region
-#
-#   Writes to STDOUT the AWS region as known by the local instance.
-get_instance_region() {
-    if [ -z "$AWS_REGION" ]; then
-        AWS_REGION=$(curl -s http://169.254.169.254/latest/dynamic/instance-identity/document \
-            | grep -i region \
-            | awk -F\" '{print $4}')
-    fi
-
-    echo $AWS_REGION
-}
-
-AWS_CLI="aws --region $(get_instance_region)"
-
-
-# Usage: get_instance_state_asg <EC2 instance ID>
-#
-#    Gets the state of the given <EC2 instance ID> as known by the AutoScaling group it's a part of.
-#    Health is printed to STDOUT and the function returns 0. Otherwise, no output and return is
-#    non-zero.
-get_instance_state_asg() {
-    local instance_id=$1
-
-    local state=$($AWS_CLI autoscaling describe-auto-scaling-instances \
-        --instance-ids $instance_id \
-        --query "AutoScalingInstances[?InstanceId == \`$instance_id\`].LifecycleState | [0]" \
-        --output text)
-    if [ $? != 0 ]; then
-        return 1
-    else
-        echo $state
-        return 0
-    fi
-}
-
-reset_waiter_timeout() {
-    local elb=$1
-    local state_name=$2
-
-    if [ "$state_name" == "InService" ]; then
-
-        # Wait for a health check to succeed
-        local timeout=$($AWS_CLI elb describe-load-balancers \
-            --load-balancer-name $elb \
-            --query 'LoadBalancerDescriptions[0].HealthCheck.Timeout')
-
-    elif [ "$state_name" == "OutOfService" ]; then
-
-        # If connection draining is enabled, wait for connections to drain
-        local draining_values=$($AWS_CLI elb describe-load-balancer-attributes \
-            --load-balancer-name $elb \
-            --query 'LoadBalancerAttributes.ConnectionDraining.[Enabled,Timeout]' \
-            --output text)
-        local draining_enabled=$(echo $draining_values | awk '{print $1}')
-        local timeout=$(echo $draining_values | awk '{print $2}')
-
-        if [ "$draining_enabled" != "True" ]; then
-            timeout=0
-        fi
-
-    else
-        msg "Unknown state name, '$state_name'";
-        return 1;
-    fi
-
-    # Base register/deregister action may take up to about 30 seconds
-    timeout=$((timeout + 60))
-
-    WAITER_ATTEMPTS=$((timeout / WAITER_INTERVAL))
-}
-
-# Usage: wait_for_state <service> <EC2 instance ID> <state name> [ELB name]
-#
-#    Waits for the state of <EC2 instance ID> to be in <state> as seen by <service>. Returns 0 if
-#    it successfully made it to that state; non-zero if not. By default, checks $WAITER_ATTEMPTS
-#    times, every $WAITER_INTERVAL seconds. If giving an [ELB name] to check under, these are reset
-#    to that ELB's timeout values.
-wait_for_state() {
-    local service=$1
-    local instance_id=$2
-    local state_name=$3
-    local elb=$4
-
-    local instance_state_cmd
-    if [ "$service" == "elb" ]; then
-        instance_state_cmd="get_instance_health_elb $instance_id $elb"
-        reset_waiter_timeout $elb $state_name
-        if [ $? != 0 ]; then
-            error_exit "Failed resetting waiter timeout for $elb"
-        fi
-    elif [ "$service" == "autoscaling" ]; then
-        instance_state_cmd="get_instance_state_asg $instance_id"
-    else
-        msg "Cannot wait for instance state; unknown service type, '$service'"
-        return 1
-    fi
-
-    msg "Checking $WAITER_ATTEMPTS times, every $WAITER_INTERVAL seconds, for instance $instance_id to be in state $state_name"
-
-    local instance_state=$($instance_state_cmd)
-    local count=1
-
-    msg "Instance is currently in state: $instance_state"
-    while [ "$instance_state" != "$state_name" ]; do
-        if [ $count -ge $WAITER_ATTEMPTS ]; then
-            local timeout=$(($WAITER_ATTEMPTS * $WAITER_INTERVAL))
-            msg "Instance failed to reach state, $state_name within $timeout seconds"
-            return 1
-        fi
-
-        sleep $WAITER_INTERVAL
-
-        instance_state=$($instance_state_cmd)
-        count=$(($count + 1))
-        msg "Instance is currently in state: $instance_state"
-    done
-
-    return 0
-}
-
-# Usage: get_instance_health_elb <EC2 instance ID> <ELB name>
-#
-#    Gets the health of the given <EC2 instance ID> as known by <ELB name>. If it's a valid health
-#    status (one of InService|OutOfService|Unknown), then the health is printed to STDOUT and the
-#    function returns 0. Otherwise, no output and return is non-zero.
-get_instance_health_elb() {
-    local instance_id=$1
-    local elb_name=$2
-
-    msg "Checking status of instance '$instance_id' in load balancer '$elb_name'"
-
-    # If describe-instance-health for this instance returns an error, then it's not part of
-    # this ELB. But, if the call was successful let's still double check that the status is
-    # valid.
-    local instance_status=$($AWS_CLI elb describe-instance-health \
-        --load-balancer-name $elb_name \
-        --instances $instance_id \
-        --query 'InstanceStates[].State' \
-        --output text 2>/dev/null)
-
-    if [ $? == 0 ]; then
-        case "$instance_status" in
-            InService|OutOfService|Unknown)
-                echo -n $instance_status
-                return 0
-                ;;
-            *)
-                msg "Instance '$instance_id' not part of ELB '$elb_name'"
-                return 1
-        esac
-    fi
-}
-
-# Usage: validate_elb <EC2 instance ID> <ELB name>
-#
-#    Validates that the Elastic Load Balancer with name <ELB name> exists, is describable, and
-#    contains <EC2 instance ID> as one of its instances.
-#
-#    If any of these checks are false, the function returns non-zero.
-validate_elb() {
-    local instance_id=$1
-    local elb_name=$2
-
-    # Get the list of active instances for this LB.
-    local elb_instances=$($AWS_CLI elb describe-load-balancers \
-        --load-balancer-name $elb_name \
-        --query 'LoadBalancerDescriptions[*].Instances[*].InstanceId' \
-        --output text)
-    if [ $? != 0 ]; then
-        msg "Couldn't describe ELB instance named '$elb_name'"
-        return 1
-    fi
-
-    msg "Checking health of '$instance_id' as known by ELB '$elb_name'"
-    local instance_health=$(get_instance_health_elb $instance_id $elb_name)
-    if [ $? != 0 ]; then
-        return 1
-    fi
-
-    return 0
-}
-
-# Usage: get_elb_list <EC2 instance ID> <ELB Name>
-#
-#   Ensures that this instance is related to the named ELB. After execution, the variable
-#   "ELB_LIST" will contain the list of load balancers for the given instance.
-#
-#   If the given instance ID isn't found registered to any ELBs, the function returns non-zero
-get_elb_list() {
-    local instance_id=$1
-    local required_elb=$2
-    local elb_list=""
-
-    msg "Looking up from ELB list"
-    local all_balancers=$($AWS_CLI elb describe-load-balancers \
-        --query LoadBalancerDescriptions[*].LoadBalancerName \
-        --output text | sed -e $'s/\t/ /g')
-
-    if [[ $all_balancers =~ $required_elb ]]
-    then
-        local instance_health
-        instance_health=$(get_instance_health_elb $instance_id $required_elb)
-        if [ $? == 0 ]; then
-            elb_list="$elb_list $required_elb"
-        fi
-    fi
-
-    if [ -z "$elb_list" ]; then
-        return 1
-    else
-        msg "Got load balancer list of: $elb_list"
-        ELB_LIST=$elb_list
-        return 0
-    fi
-}
-
-# Usage: deregister_instance <EC2 instance ID> <ELB name>
-#
-#   Deregisters <EC2 instance ID> from <ELB name>.
-deregister_instance() {
-    local instance_id=$1
-    local elb_name=$2
-
-    $AWS_CLI elb deregister-instances-from-load-balancer \
-        --load-balancer-name $elb_name \
-        --instances $instance_id 1> /dev/null
-
-    return $?
-}
-
-# Usage: register_instance <EC2 instance ID> <ELB name>
-#
-#   Registers <EC2 instance ID> to <ELB name>.
-register_instance() {
-    local instance_id=$1
-    local elb_name=$2
-
-    $AWS_CLI elb register-instances-with-load-balancer \
-        --load-balancer-name $elb_name \
-        --instances $instance_id 1> /dev/null
-
-    return $?
-}
-
-# Usage: check_cli_version [version-to-check] [desired version]
-#
-#   Without any arguments, checks that the installed version of the AWS CLI is at least at version
-#   $MIN_CLI_VERSION. Returns non-zero if the version is not high enough.
-check_cli_version() {
-    if [ -z $1 ]; then
-        version=$($AWS_CLI --version 2>&1 | cut -f1 -d' ' | cut -f2 -d/)
-    else
-        version=$1
-    fi
-
-    if [ -z "$2" ]; then
-        min_version=$MIN_CLI_VERSION
-    else
-        min_version=$2
-    fi
-
-    x=$(echo $version | cut -f1 -d.)
-    y=$(echo $version | cut -f2 -d.)
-    z=$(echo $version | cut -f3 -d.)
-
-    min_x=$(echo $min_version | cut -f1 -d.)
-    min_y=$(echo $min_version | cut -f2 -d.)
-    min_z=$(echo $min_version | cut -f3 -d.)
-
-    msg "Checking minimum required CLI version (${min_version}) against installed version ($version)"
-
-    if [ $x -lt $min_x ]; then
-        return 1
-    elif [ $y -lt $min_y ]; then
-        return 1
-    elif [ $y -gt $min_y ]; then
-        return 0
-    elif [ $z -ge $min_z ]; then
-        return 0
-    else
-        return 1
-    fi
-}
-
-# Usage: msg <message>
-#
-#   Writes <message> to STDERR only if $DEBUG is true, otherwise has no effect.
-msg() {
-    local message=$1
-    $DEBUG && echo $message 1>&2
-}
-
-# Usage: error_exit <message>
-#
-#   Writes <message> to STDERR as a "fatal" and immediately exits the currently running script.
-error_exit() {
-    local message=$1
-
-    echo "[FATAL] $message" 1>&2
-    exit 1
-}
-
-# Usage: get_instance_id
-#
-#   Writes to STDOUT the EC2 instance ID for the local instance. Returns non-zero if the local
-#   instance metadata URL is inaccessible.
-get_instance_id() {
-    curl -s http://169.254.169.254/latest/meta-data/instance-id
-    return $?
-}
-
-# Usage: get_instance_name_from_tags <instance_id>
-#
-# Looks up tags for the given instance, extracting the 'name'
-# returns <name> or error_exit
-get_instance_name_from_tags() {
-    local instance_id=$1
-
-    local instance_name=$($AWS_CLI ec2 describe-tags \
-        --filters "Name=resource-id,Values=${instance_id}"  \
-        --query Tags[0].Value \
-        --output text)
-    if [ $? != 0 ]; then
-        error_exit "Couldn't get instance name for '$instance_id'"
-    fi
-    echo $instance_name
-    return $?
-}
-
-ELB_NAME=""
-
-get_elb_name_for_instance_name() {
-    local instance_name=$1
-
-    declare -A elb_to_instance_mapping
-
-    elb_to_instance_mapping['notify-admin']='notify-admin'
-
-    elb_to_instance_mapping['notify-admin-ags']='notify-admin-ags'
-
-    local elb_name=${elb_to_instance_mapping[${instance_name}]}
-    if [ -z $elb_name ]; then
-        msg "No ELB for instance ${instance_name}"
-    else
-        ELB_NAME=$elb_name
-    fi
-}
diff --git a/scripts/deregister_from_elb.sh b/scripts/deregister_from_elb.sh
deleted file mode 100755
index 62bab1612..000000000
--- a/scripts/deregister_from_elb.sh
+++ /dev/null
@@ -1,71 +0,0 @@
-#!/bin/bash
-#
-# Copyright 2014 Amazon.com, Inc. or its affiliates. All Rights Reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License").
-# You may not use this file except in compliance with the License.
-# A copy of the License is located at
-#
-#  http://aws.amazon.com/apache2.0
-#
-# or in the "license" file accompanying this file. This file is distributed
-# on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
-# express or implied. See the License for the specific language governing
-# permissions and limitations under the License.
-
-. $(dirname $0)/common_functions.sh
-
-msg "Running AWS CLI with region: $(get_instance_region)"
-
-# get this instance's ID
-INSTANCE_ID=$(get_instance_id)
-if [ $? != 0 -o -z "$INSTANCE_ID" ]; then
-    error_exit "Unable to get this instance's ID; cannot continue."
-fi
-
-# Get current time
-msg "Started $(basename $0) at $(/bin/date "+%F %T")"
-start_sec=$(/bin/date +%s.%N)
-
-msg "Getting relevant load balancer"
-INSTANCE_NAME=$(get_instance_name_from_tags $INSTANCE_ID)
-get_elb_name_for_instance_name $INSTANCE_NAME
-get_elb_list $INSTANCE_ID $ELB_NAME
-
-msg "Checking that user set at least one load balancer"
-if test -z "$ELB_LIST"; then
-    error_exit "Must have at least one load balancer to deregister from"
-fi
-
-# Loop through all LBs the user set, and attempt to deregister this instance from them.
-for elb in $ELB_LIST; do
-    msg "Checking validity of load balancer named '$elb'"
-    validate_elb $INSTANCE_ID $elb
-    if [ $? != 0 ]; then
-        msg "Error validating $elb; cannot continue with this LB"
-        continue
-    fi
-
-    msg "Deregistering $INSTANCE_ID from $elb"
-    deregister_instance $INSTANCE_ID $elb
-
-    if [ $? != 0 ]; then
-        error_exit "Failed to deregister instance $INSTANCE_ID from ELB $elb"
-    fi
-done
-
-# Wait for all Deregistrations to finish
-msg "Waiting for instance to de-register from its load balancers"
-for elb in $ELB_LIST; do
-    wait_for_state "elb" $INSTANCE_ID "OutOfService" $elb
-    if [ $? != 0 ]; then
-        error_exit "Failed waiting for $INSTANCE_ID to leave $elb"
-    fi
-done
-
-msg "Finished $(basename $0) at $(/bin/date "+%F %T")"
-
-end_sec=$(/bin/date +%s.%N)
-elapsed_seconds=$(echo "$end_sec - $start_sec" | /usr/bin/bc)
-
-msg "Elapsed time: $elapsed_seconds"
diff --git a/scripts/register_with_elb.sh b/scripts/register_with_elb.sh
deleted file mode 100755
index 7cc78006c..000000000
--- a/scripts/register_with_elb.sh
+++ /dev/null
@@ -1,72 +0,0 @@
-#!/bin/bash
-#
-# Copyright 2014 Amazon.com, Inc. or its affiliates. All Rights Reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License").
-# You may not use this file except in compliance with the License.
-# A copy of the License is located at
-#
-#  http://aws.amazon.com/apache2.0
-#
-# or in the "license" file accompanying this file. This file is distributed
-# on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
-# express or implied. See the License for the specific language governing
-# permissions and limitations under the License.
-
-. $(dirname $0)/common_functions.sh
-
-msg "Running AWS CLI with region: $(get_instance_region)"
-
-# get this instance's ID
-INSTANCE_ID=$(get_instance_id)
-if [ $? != 0 -o -z "$INSTANCE_ID" ]; then
-    error_exit "Unable to get this instance's ID; cannot continue."
-fi
-
-# Get current time
-msg "Started $(basename $0) at $(/bin/date "+%F %T")"
-start_sec=$(/bin/date +%s.%N)
-
-msg "Getting relevant load balancer"
-INSTANCE_NAME=$(get_instance_name_from_tags $INSTANCE_ID)
-get_elb_name_for_instance_name $INSTANCE_NAME
-ELB_LIST=$ELB_NAME
-get_elb_list $INSTANCE_ID $ELB_NAME
-
-msg "Checking that user set at least one load balancer"
-if test -z "$ELB_LIST"; then
-    error_exit "Must have at least one load balancer to register to"
-fi
-
-# Loop through all LBs the user set, and attempt to register this instance to them.
-for elb in $ELB_LIST; do
-    msg "Checking validity of load balancer named '$elb'"
-    validate_elb $INSTANCE_ID $elb
-    if [ $? != 0 ]; then
-        msg "Error validating $elb; cannot continue with this LB"
-        continue
-    fi
-
-    msg "Registering $INSTANCE_ID to $elb"
-    register_instance $INSTANCE_ID $elb
-
-    if [ $? != 0 ]; then
-        error_exit "Failed to register instance $INSTANCE_ID from ELB $elb"
-    fi
-done
-
-# Wait for all Registrations to finish
-msg "Waiting for instance to register to its load balancers"
-for elb in $ELB_LIST; do
-    wait_for_state "elb" $INSTANCE_ID "InService" $elb
-    if [ $? != 0 ]; then
-        error_exit "Failed waiting for $INSTANCE_ID to return to $elb"
-    fi
-done
-
-msg "Finished $(basename $0) at $(/bin/date "+%F %T")"
-
-end_sec=$(/bin/date +%s.%N)
-elapsed_seconds=$(echo "$end_sec - $start_sec" | /usr/bin/bc)
-
-msg "Elapsed time: $elapsed_seconds"