[GitHub] csantanapr closed pull request #169: swap active host on sigterm signal if host being stopped is active

[GitBox <gi...@apache.org>]

csantanapr closed pull request #169: swap active host on sigterm signal if host being stopped is active
URL: https://github.com/apache/incubator-openwhisk-package-cloudant/pull/169
 
 
   

This is a PR merged from a forked repository.
As GitHub hides the original diff on merge, it is displayed below for
the sake of provenance:

As this is a foreign pull request (from a fork), the diff is supplied
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diff --git a/provider/lib/utils.js b/provider/lib/utils.js
index 3e38e1a..57550ca 100644
--- a/provider/lib/utils.js
+++ b/provider/lib/utils.js
@@ -460,7 +460,21 @@ module.exports = function(logger, triggerDB, redisClient) {
                 .then(activeHost => {
                     return utils.initActiveHost(activeHost);
                 })
-                .then(resolve)
+                .then(() => {
+                    process.on('SIGTERM', function onSigterm() {
+                        if (utils.activeHost === utils.host) {
+                            var redundantHost = utils.host === 'host0' ? 'host1' : 'host0';
+                            utils.redisClient.hsetAsync(utils.redisHash, utils.redisKey, redundantHost)
+                            .then(() => {
+                                utils.redisClient.publish(utils.redisHash, redundantHost);
+                            })
+                            .catch(err => {
+                                logger.error(method, err);
+                            });
+                        }
+                    });
+                    resolve();
+                })
                 .catch(err => {
                     reject(err);
                 });


 

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