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Merge pull request #400 from ulucinar/tf-conversion
Allow Specification of the CRD API Version a Controller Watches & Reconciles
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,72 @@ | ||
| // SPDX-FileCopyrightText: 2024 The Crossplane Authors <https://crossplane.io> | ||
| // | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
|
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| package config | ||
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||
| import ( | ||
| "github.com/pkg/errors" | ||
|
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| "github.com/crossplane/upjet/pkg/config/conversion" | ||
| ) | ||
|
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| // Mode denotes the mode of the runtime Terraform conversion, e.g., | ||
| // conversion from Crossplane parameters to Terraform arguments, or | ||
| // conversion from Terraform state to Crossplane state. | ||
| type Mode int | ||
|
|
||
| const ( | ||
| ToTerraform Mode = iota | ||
| FromTerraform | ||
| ) | ||
|
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| // String returns a string representation of the conversion mode. | ||
| func (m Mode) String() string { | ||
| switch m { | ||
| case ToTerraform: | ||
| return "toTerraform" | ||
| case FromTerraform: | ||
| return "fromTerraform" | ||
| default: | ||
| return "unknown" | ||
| } | ||
| } | ||
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| type TerraformConversion interface { | ||
| Convert(params map[string]any, r *Resource, mode Mode) (map[string]any, error) | ||
| } | ||
|
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| // ApplyTFConversions applies the configured Terraform conversions on the | ||
| // specified params map in the given mode, i.e., from Crossplane layer to the | ||
| // Terraform layer or vice versa. | ||
| func (r *Resource) ApplyTFConversions(params map[string]any, mode Mode) (map[string]any, error) { | ||
| var err error | ||
| for _, c := range r.TerraformConversions { | ||
| params, err = c.Convert(params, r, mode) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| } | ||
| return params, nil | ||
| } | ||
|
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| type singletonListConversion struct{} | ||
|
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| // NewTFSingletonConversion initializes a new TerraformConversion to convert | ||
| // between singleton lists and embedded objects in the exchanged data | ||
| // at runtime between the Crossplane & Terraform layers. | ||
| func NewTFSingletonConversion() TerraformConversion { | ||
| return singletonListConversion{} | ||
| } | ||
|
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| func (s singletonListConversion) Convert(params map[string]any, r *Resource, mode Mode) (map[string]any, error) { | ||
| var err error | ||
| var m map[string]any | ||
| switch mode { | ||
| case FromTerraform: | ||
| m, err = conversion.Convert(params, r.TFListConversionPaths(), conversion.ToEmbeddedObject) | ||
| case ToTerraform: | ||
| m, err = conversion.Convert(params, r.TFListConversionPaths(), conversion.ToSingletonList) | ||
| } | ||
| return m, errors.Wrapf(err, "failed to convert between Crossplane and Terraform layers in mode %q", mode) | ||
| } |
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