From 10667d3ee16edf6e9441077c37bc126117ee0a24 Mon Sep 17 00:00:00 2001
From: cachedout <mike.place@elastic.co>
Date: Tue, 4 Aug 2020 13:14:52 +0200
Subject: [PATCH] Ensure install scripts only install if needed (#20349)

* Ensure install scripts only install once

* Add unmet dep str
---
 .ci/scripts/install-docker-compose.sh | 16 +++++++++++++-
 .ci/scripts/install-go.sh             | 14 +++++++++++-
 .ci/scripts/install-kind.sh           | 26 ++++++++++++++++++++++
 .ci/scripts/install-terraform.sh      | 31 +++++++++++++++++++++++++++
 4 files changed, 85 insertions(+), 2 deletions(-)
 create mode 100755 .ci/scripts/install-kind.sh
 create mode 100755 .ci/scripts/install-terraform.sh

diff --git a/.ci/scripts/install-docker-compose.sh b/.ci/scripts/install-docker-compose.sh
index a430eb1873f..72d889f216a 100755
--- a/.ci/scripts/install-docker-compose.sh
+++ b/.ci/scripts/install-docker-compose.sh
@@ -2,9 +2,23 @@
 
 set -exuo pipefail
 
-MSG="parameter missing."
+MSG="environment variable missing: DOCKER_COMPOSE_VERSION."
 DOCKER_COMPOSE_VERSION=${DOCKER_COMPOSE_VERSION:?$MSG}
 HOME=${HOME:?$MSG}
+
+if command -v docker-compose
+then
+    echo "Found docker-compose. Checking version.."
+    FOUND_DOCKER_COMPOSE_VERSION=$(docker-compose --version|awk '{print $3}'|sed s/\,//)
+    if [ $FOUND_DOCKER_COMPOSE_VERSION == $DOCKER_COMPOSE_VERSION ]
+    then
+        echo "Versions match. No need to install docker-compose. Exiting."
+        exit 0
+    fi
+fi
+
+echo "UNMET DEP: Installing docker-compose"
+
 DC_CMD="${HOME}/bin/docker-compose"
 
 mkdir -p "${HOME}/bin"
diff --git a/.ci/scripts/install-go.sh b/.ci/scripts/install-go.sh
index 6698c1f85a2..5727abccdda 100755
--- a/.ci/scripts/install-go.sh
+++ b/.ci/scripts/install-go.sh
@@ -1,13 +1,25 @@
 #!/usr/bin/env bash
 set -exuo pipefail
 
-MSG="parameter missing."
+MSG="environment variable missing"
 GO_VERSION=${GO_VERSION:?$MSG}
 PROPERTIES_FILE=${PROPERTIES_FILE:-"go_env.properties"}
 HOME=${HOME:?$MSG}
 ARCH=$(uname -s| tr '[:upper:]' '[:lower:]')
 GVM_CMD="${HOME}/bin/gvm"
 
+if command -v go
+then
+    echo "Found Go. Checking version.."
+    FOUND_GO_VERSION=$(go version|awk '{print $3}'|sed s/go//)
+    if [ $FOUND_GO_VERSION == $GO_VERSION ]
+    then
+        echo "Versions match. No need to install Go. Exiting."
+        exit 0
+    fi
+fi
+
+echo "UNMET DEP: Installing Go"
 mkdir -p "${HOME}/bin"
 
 curl -sSLo "${GVM_CMD}" "https://github.com/andrewkroh/gvm/releases/download/v0.2.1/gvm-${ARCH}-amd64"
diff --git a/.ci/scripts/install-kind.sh b/.ci/scripts/install-kind.sh
new file mode 100755
index 00000000000..a53c4b3708a
--- /dev/null
+++ b/.ci/scripts/install-kind.sh
@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+set -exuo pipefail
+
+MSG="environment variable missing."
+DEFAULT_HOME="/usr/local"
+KIND_VERSION=${KIND_VERSION:?$MSG}
+HOME=${HOME:?$DEFAULT_HOME}
+KIND_CMD="${HOME}/bin/kind"
+
+if command -v kind
+then
+    echo "Found Kind. Checking version.."
+    FOUND_KIND_VERSION=$(kind --version 2>&1 >/dev/null | awk '{print $3}')
+    if [ $FOUND_KIND_VERSION == $KIND_VERSION ]
+    then
+        echo "Versions match. No need to install Kind. Exiting."
+        exit 0
+    fi
+fi
+
+echo "UNMET DEP: Installing Kind"
+
+mkdir -p "${HOME}/bin"
+
+curl -sSLo "${KIND_CMD}" "https://github.com/kubernetes-sigs/kind/releases/download/${KIND_VERSION}/kind-linux-amd64"
+chmod +x "${KIND_CMD}"
diff --git a/.ci/scripts/install-terraform.sh b/.ci/scripts/install-terraform.sh
new file mode 100755
index 00000000000..4af2e91baab
--- /dev/null
+++ b/.ci/scripts/install-terraform.sh
@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+
+set -exuo pipefail
+
+MSG="environment variable missing."
+TERRAFORM_VERSION=${TERRAFORM_VERSION:?$MSG}
+HOME=${HOME:?$MSG}
+TERRAFORM_CMD="${HOME}/bin/terraform"
+
+OS=$(uname -s | tr '[:upper:]' '[:lower:]')
+
+if command -v terraform
+then
+    echo "Found Terraform. Checking version.."
+    FOUND_TERRAFORM_VERSION=$(terraform --version | awk '{print $2}' | sed s/v//)
+    if [ $FOUND_TERRAFORM_VERSION == $TERRAFORM_VERSION ]
+    then
+        echo "Versions match. No need to install Terraform. Exiting."
+        exit 0
+    fi
+fi
+
+echo "UNMET DEP: Installing Terraform"
+
+mkdir -p "${HOME}/bin"
+
+curl -sSLo - "https://releases.hashicorp.com/terraform/${TERRAFORM_VERSION}/terraform_${TERRAFORM_VERSION}_${OS}_amd64.zip" > ${TERRAFORM_CMD}.zip
+unzip -o ${TERRAFORM_CMD}.zip -d $(dirname ${TERRAFORM_CMD})
+rm ${TERRAFORM_CMD}.zip
+
+chmod +x "${TERRAFORM_CMD}"