From 1475ae32b95d7629a04f62f63e9e2e6e5612c9f1 Mon Sep 17 00:00:00 2001
From: Erich Eckner <git@eckner.net>
Date: Wed, 3 Aug 2022 21:07:33 +0200
Subject: actually run

---
 colocation-client.in | 47 ++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 44 insertions(+), 3 deletions(-)

diff --git a/colocation-client.in b/colocation-client.in
index dfb1662..0226682 100644
--- a/colocation-client.in
+++ b/colocation-client.in
@@ -2,7 +2,7 @@
 
 configuration_file="${1:-#ETC#/colocation-client.conf}"
 
-jq '{
+jq -c '{
   colocation_server,
   machine: .machines[]
 } | {
@@ -16,6 +16,47 @@ jq '{
       .machine.key
     )
   ),
-  values: .machine.values,
+  test: (
+    .machine.values |
+    to_entries |
+    .[] |
+    {
+      state: .key,
+      command: (.value.command // "true"),
+      result: (.value.result // "exitcode")
+    }
+  )
+} | {
+  url: ( .url + "&" + .test.state + "=" ),
+  command: .test.command,
+  result: .test.result
 }' \
-<"${configuration_file}"
+<"${configuration_file}" \
+| sed '
+  s@^{"url":"\([^"]\+\)","command":"\([^"]\+\)","result":"\([^"]\+\)"}$@\1\n\2\n\3@
+  t
+  d
+' \
+| while read -r url && read -r command && read -r result_strategy; do
+  case "${result_strategy}" in
+    'exitcode')
+      ${command} 2>/dev/null >/dev/null
+      result=$?
+    ;;
+    'stderr')
+      result=$(${command} >/dev/null 2>&1)
+    ;;
+    'stdout')
+      result=$(${command} 2>/dev/null)
+    ;;
+    *)
+      >&2 printf 'unknown result strategy "%s"\n' "${result_strategy}"
+      exit 1
+    ;;
+  esac
+  if printf '%s\n' "${result}" | grep -vxF '0' | grep -qvxF '1'; then
+    >&2 printf 'result must be 0 or 1, but is "%s" for command "%s" with result strategy "%s"\n' "${result}" "${command}" "${result_strategy}"
+    exit 1
+  fi
+  curl -Ss "${url}${result}"
+done
-- 
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