e879e9060f
Most of what we interact with in configgraph is other parts of the evaluator that automatically get memoized by patterns like OnceValuer, but the value for a resource instance is always provided by something outside of the evaluator that won't typically be able to use those mechanisms, and so the evaluator's ResourceInstance.Value implementation will now provide memoization on behalf of that external component, to ensure that we end up with only one value for each resource instance regardless of how that external component behaves. In the case of the current planning phase, in particular this means that we'll now only try to plan each resource instance once, whereas before we would ask it to make a separate plan for each call to Value. For now this is just retrofitted in an minimally-invasive way as part of our "walking skeleton" phase where we're just trying to wire the existing parts together end-to-end and then decide at the end whether we want to refactor things more. If this need for general-purpose memoization ends up appearing in other places too then maybe we'll choose to structure this a little differently. Signed-off-by: Martin Atkins <mart@degeneration.co.uk>
OpenTofu
OpenTofu is an OSS tool for building, changing, and versioning infrastructure safely and efficiently. OpenTofu can manage existing and popular service providers as well as custom in-house solutions.
The key features of OpenTofu are:
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Infrastructure as Code: Infrastructure is described using a high-level configuration syntax. This allows a blueprint of your datacenter to be versioned and treated as you would any other code. Additionally, infrastructure can be shared and re-used.
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Execution Plans: OpenTofu has a "planning" step where it generates an execution plan. The execution plan shows what OpenTofu will do when you call apply. This lets you avoid any surprises when OpenTofu manipulates infrastructure.
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Resource Graph: OpenTofu builds a graph of all your resources, and parallelizes the creation and modification of any non-dependent resources. Because of this, OpenTofu builds infrastructure as efficiently as possible, and operators get insight into dependencies in their infrastructure.
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Change Automation: Complex changesets can be applied to your infrastructure with minimal human interaction. With the previously mentioned execution plan and resource graph, you know exactly what OpenTofu will change and in what order, avoiding many possible human errors.
Getting help and contributing
- Have a question?
- Post it in GitHub Discussions
- Open a GitHub issue
- Join the OpenTofu Slack!
- Want to contribute?
- Please read the Contribution Guide.
- Recurring Events
- Community Meetings on Wednesdays at 12:30 UTC at this link: https://meet.google.com/xfm-cgms-has (📅 calendar link)
- Technical Steering Committee Meetings every other Tuesday at 4pm UTC at this link: https://meet.google.com/cry-houa-qbk (📅 calendar link)
Tip
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Reporting security vulnerabilities
If you've found a vulnerability or a potential vulnerability in OpenTofu please follow Security Policy. We'll send a confirmation email to acknowledge your report, and we'll send an additional email when we've identified the issue positively or negatively.
Reporting possible copyright issues
If you believe you have found any possible copyright or intellectual property issues, please contact liaison@opentofu.org. We'll send a confirmation email to acknowledge your report.
Registry Access
In an effort to comply with applicable sanctions, we block access from specific countries of origin.