Jira (PUP-10147) Track server versions so we know if it supports json serialization and the locales mount

Josh Cooper (JIRA)

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Feb 10, 2020, 12:27:04 PM2/10/20

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Josh Cooper updated an issue

Puppet /

PUP-10147

Track server versions so we know if it supports json serialization and the locales mount

Change By:	Josh Cooper
Summary:	Handle PSON downgrade Track server versions so we know if it supports json serialization and the locales mount

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Josh Cooper (JIRA)

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Feb 10, 2020, 12:29:04 PM2/10/20

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Josh Cooper updated an issue

Puppet /

PUP-10147

Track server versions so we know if it supports json serialization and the locales mount

Change By:	Josh Cooper

The agent will downgrade from JSON to PSON serialization if the very first puppetserver response header {{X-PUPPET_VERSION}} < 6.0. Typically this occurs when making the initial node request to determine the agent's environment.

Puppet's http client should record PSON downgrade in its session, and use that for subsequent connections. So if the node request causes us to downgrade, then the facts should be encoded in PSON and submitted with the catalog request, and later the report should be submitted as PSON.

Similarly, we sync from the {{plugins}} and {{pluginfacts}} mounts, and need to know the server version prior to syncing the {{locales}} mount, which was added in 5.3.4.