terraform

Commit Graph

Author	SHA1	Message	Date
Martin Atkins	71e989ba3e	config/hcl2shim: make some of the HCL2 shim functions public The value-conversion machinery is also needed in the main "terraform" package to help us populate our HCL2 evaluation scope, so a subset of the shim functions move here into a new package where they can be public. Some of them remain private within the config package since they depend on some other symbols in the config package, and they are not needed by outside callers anyway.	9 years ago
Martin Atkins	b851fa71c9	config: Make HIL-based functions available to HCL2 via a shim Terraform has a _lot_ of functions written against HIL's function API, and we're not ready to rewrite them all yet, so instead we shim the HIL function API to conform to the HCL2 (really: cty) function API and thus allow most of our existing functions to work as expected when called from HCL2-based config files. Not all of the functions can be fully shimmed in this way due to depending on HIL implementation details that we can't mimic through the HCL2 API. We don't attempt to address that yet, and instead just let them fail when called. We will eventually address this by using first-class HCL2 functions for these few cases, thus avoiding the HIL API altogether where we need to. (The methodology for that is already illustrated here in the provision of jsonencode and jsondecode functions that are HCL2-native.)	9 years ago
Martin Atkins	34e9de605c	config: tests for HIL-to-HCL2 value shimming	9 years ago
Martin Atkins	b0215fcd0f	config: HCL2 config loader This loader uses the HCL2 parser and decoder to process a config file, and then transforms the result into the same shape as would be produced by the HCL config loader. To avoid making changes to the existing config structures (which are depended on across much of the codebase) we first decode into a set of HCL2-tailored structs and then process them into the public-facing structs that a loader is expected to return. This is a compromise to keep the config package API broadly unchanged for now. Once we're ready to remove the old HCL loader (which implies that we're ready to support HCL2 natively elsewhere in the codebase) we will be able to simplify this quite considerably. Due to some mismatches of abstraction between HCL/HIL and HCL2, some shimming is required to get the required result.	9 years ago

4 Commits (1e2da4f776bdf74058154ed31c4cd62b052d3f2d)