install

#!/usr/bin/env bash

set -eo pipefail

metrics_version="v0.3.6"
chart_version="0.1.0"
strimzi_version="0.17.0"

function usage {
    echo "USAGE: ./scripts/install [RELEASE_NAME] [NAMESPACE] [aws|local] [<key=value>, ...]"
    echo
    echo "EXAMPLE"
    echo "    ./scripts/install foo bar local abc=123 x.y.z=42"
    echo "    ./scripts/install abc default aws image.tag=latest"
    echo
    exit 0
}

function info {
    local -r message=${1:?MESSAGE REQUIRED}
    echo "[INFO] $message"
}

function check_strimzi {
    local timeout=${1:-10s}

    kubectl wait pod \
            --selector name=strimzi-cluster-operator \
            --for condition=Ready \
            --timeout=${timeout}
}

function metrics_server {
    info "Installing Metrics Server"
    kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/download/${metrics_version}/components.yaml
}

function strimzi {
    if [[ ! $(check_strimzi) ]]; then
        info "Adding strimzi repo"
        helm repo add strimzi https://strimzi.io/charts/

        info "Installing Strimzi"
        helm upgrade strimzi-kafka-operator strimzi/strimzi-kafka-operator \
             --install \
             --version ${strimzi_version} \
             --set watchAnyNamespace=true

        check_strimzi 300s
    fi
}

function hindsight {
    local -r release="${1:?Release name required.}"
    local -r ns="${2:?Namespace required.}"
    local -r location="${3:?Location required.}"
    shift 3

    if [ $# -gt 0 ]; then
        local -r vals=$(IFS=, ; echo "$*")
        local -r set_values="--set $vals"
    fi

    metrics_server

    info "Installing Hindsight"
    helm repo add inhindsight https://inhindsight.github.io/charts
    helm repo update

    helm upgrade ${release} inhindsight/hindsight \
         --install \
         --version ${chart_version} \
         --namespace ${ns} \
         --values ./helm/presets/${location}.yaml \
         ${set_values}
}

[[ "$1" == "-h" || "$1" == "--help" ]] && usage

strimzi
hindsight "${@}"