If you're interested then I can leave an example of how jq could be used.Īs an aside, currently you can have a username with a double quote, backslash, and other odd characters in it right now because of a bug in the commissioning process. You can provide your variable values as arguments (Search for -arg in the jq manual. The jq command and its dependencies weigh in at about 1MB. For this container you can use apt to get it. If you're looking for a good way to construct your JSON in a bash script that will allow you to fix this issue, I'd recommend using the excellent jq command line tool. I wanted to make this JSON-escaping issue known in case more commissioning steps are added in the future and there are more opportunities for trouble. There are very limited ways for this to cause real trouble (right now). Ideally they'd see an error about the invalid value they specified, rather than a generic error caused by failure to parse JSON.
Predator Software is an industry leader in Industry 4.0, lean manufacturing, industrial networking solutions and automation via shop floor control or SFC. People generally won't have usernames with double quotes, backslashes, tabs, or newlines in them, but some might. Since 1994, Predator Software focuses on automating manufacturers worldwide with innovative and award-winning software applications. Referrer-Policy: strict-origin-when-cross-originĬache-Control: must-revalidate,no-cache,no-storeĬontent-Type: text/html charset=iso-8859-1
The first argument is any date type variable. dateFormat (now (1000), 'MMM d, yyyy hh:mm:s a') The dateFormat function takes two arguments.
Enter the following code into the expression, and click OK. Doing any of these may result in leakage, rupture, heat generation, or ignition.
Waiting for commissioning servlet to become active.ĮRROR: Unexpected Response (400) during Commissioning phase: Configuring Authentication Select the label's Text property binding icon and select Expression binding. Include programming to back up specified words in the DM Area to the.
Without proper escaping, some variable values can cause the JSON to be invalid and unable to be parsed.įor example, when I set a GATEWAY_ADMIN_USERNAME to a value including a double quote, I got an error like this: Provisioning will be logged here: /usr/local/share/ignition/logs/provisioning.log Backslashes, double quotes, and control characters (U+0000 through U+001F) need to be escaped with a backslash when they're in a JSON string. Some variable values are inserted literally into the JSON without first escaping them according to the rules for JSON strings. During the auto-commissioning procedure in the docker-entrypoint.sh for Ignition 8.0, some JSON values are constructed and then sent to Ignition via curl.