[dev/ci_setup] generalize jenkins_setup script for other CI environme…

…nts (#15178)

* [dev/ci_setup] generalize jenkins_setup script for other CI environments

* [dev/ci_setup] accept more general `CACHE_DIR` env arg

* [dev/ci_setup] node.js install might not be invalid

src/dev/ci_setup/setup.sh

@@ -0,0 +1,53 @@
+#!/usr/bin/env bash
+
+set -e
+
+dir="$(pwd)"
+cacheDir="${CACHE_DIR:-"/tmp/kibana"}"
+
+
+###
+### check that we seem to be in a kibana project
+###
+if [ -f "$dir/package.json" ] && [ -f "$dir/.node-version" ]; then
+  echo "Setting up node.js and npm in $dir"
+else
+  echo "src/dev/ci_setup/setup.sh must be run within a kibana repo"
+  exit 1
+fi
+
+
+###
+### download node
+###
+nodeVersion="$(cat $dir/.node-version)"
+nodeUrl="https://nodejs.org/download/release/v$nodeVersion/node-v$nodeVersion-linux-x64.tar.gz"
+nodeDir="$cacheDir/node/$nodeVersion"
+echo " -- node: version=v${nodeVersion} dir=$nodeDir"
+
+echo " -- setting up node.js"
+if [ -x "$nodeDir/bin/node" ] && [ "$($nodeDir/bin/node --version)" == "v$nodeVersion" ]; then
+  echo " -- reusing node.js install"
+else
+  if [ -d "$nodeDir" ]; then
+    echo " -- clearing previous node.js install"
+    rm -rf "$nodeDir"
+  fi
+
+  echo " -- downloading node.js from $nodeUrl"
+  mkdir -p "$nodeDir"
+  curl --silent "$nodeUrl" | tar -xz -C "$nodeDir" --strip-components=1
+fi
+
+
+###
+### "install" node by extending the path with it's bin directory
+###
+export PATH="$nodeDir/bin:$PATH"
+
+
+###
+### install dependencies
+###
+echo " -- installing node.js dependencies"
+npm install --cache "$cacheDir/npm"

test/scripts/jenkins_docs.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
 set -e
-source "$(dirname $0)/_jenkins_setup.sh"
+source "$(dirname $0)/../../src/dev/ci_setup/setup.sh"
 
 "$(npm bin)/grunt" jenkins:docs;

test/scripts/jenkins_selenium.sh

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 
 set -e
-source "$(dirname $0)/_jenkins_setup.sh"
+source "$(dirname $0)/../../src/dev/ci_setup/setup.sh"
 
 "$(npm bin)/grunt" build --release;
 

test/scripts/jenkins_unit.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
 set -e
-source "$(dirname $0)/_jenkins_setup.sh"
+source "$(dirname $0)/../../src/dev/ci_setup/setup.sh"
 
 xvfb-run "$(npm bin)/grunt" jenkins:unit;