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13b44283e9
This commits allows the container to report 3 additional metrics at every sampling event: - a heartbeat - the size of the workflow queue (filtered) - the number of running workflows (filtered) The heartbeat is a simple metric allowing us to monitor the metrics health. Before this commit, a new metrics was pushed only when a workflow was completed. This meant we had to wait a few hours before noticing if the metrics container was unable to push metrics. In addition to this, this commits adds a sampling of the workflow queue size and running count. This should allow us to better understand the load, and improve the autoscale values we pick for the cluster. --------- Signed-off-by: Nathan Gauër <brioche@google.com>