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[Extend Governor APIs] Governor JSON Validator (#74)
* add validator * Update pkg/jsonschema/unique_constraint.go Co-authored-by: E Camden Fisher <fish@fishnix.net> * address review suggestions --------- Co-authored-by: E Camden Fisher <fish@fishnix.net>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,75 @@ | ||
| package jsonschema | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "strings" | ||
|
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||
| "github.com/metal-toolbox/governor-api/internal/models" | ||
| "github.com/santhosh-tekuri/jsonschema/v5" | ||
| "github.com/volatiletech/sqlboiler/v4/boil" | ||
| ) | ||
|
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| // Compiler is a struct for a JSON schema compiler | ||
| type Compiler struct { | ||
| jsonschema.Compiler | ||
|
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| extensionID string | ||
| erdSlugPlural string | ||
| version string | ||
| } | ||
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| // Option is a functional configuration option for JSON schema compiler | ||
| type Option func(c *Compiler) | ||
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| // NewCompiler configures and creates a new JSON schema compiler | ||
| func NewCompiler( | ||
| extensionID, slugPlural, version string, | ||
| opts ...Option, | ||
| ) *Compiler { | ||
| c := &Compiler{*jsonschema.NewCompiler(), extensionID, slugPlural, version} | ||
|
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| for _, opt := range opts { | ||
| opt(c) | ||
| } | ||
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| return c | ||
| } | ||
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| // WithUniqueConstraint enables the unique constraint extension for a JSON | ||
| // schema. An extra `unique` field can be added to the JSON schema, and the | ||
| // Validator will ensure that the combination of every properties in the | ||
| // array is unique within the given extension resource definition. | ||
| // Note that unique constraint validation will be skipped if db is nil. | ||
| func WithUniqueConstraint( | ||
| ctx context.Context, | ||
| extensionResourceDefinition *models.ExtensionResourceDefinition, | ||
| resourceID *string, | ||
| db boil.ContextExecutor, | ||
| ) Option { | ||
| return func(c *Compiler) { | ||
| c.RegisterExtension( | ||
| "uniqueConstraint", | ||
| JSONSchemaUniqueConstraint, | ||
| &UniqueConstraintCompiler{extensionResourceDefinition, resourceID, ctx, db}, | ||
| ) | ||
| } | ||
| } | ||
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| func (c *Compiler) schemaURL() string { | ||
| return fmt.Sprintf( | ||
| "https://governor/extensions/%s/erds/%s/%s/schema.json", | ||
| c.extensionID, c.erdSlugPlural, c.version, | ||
| ) | ||
| } | ||
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| // Compile compiles the schema string | ||
| func (c *Compiler) Compile(schema string) (*jsonschema.Schema, error) { | ||
| url := c.schemaURL() | ||
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| if err := c.AddResource(url, strings.NewReader(schema)); err != nil { | ||
| return nil, err | ||
| } | ||
|
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| return c.Compiler.Compile(url) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,3 @@ | ||
| // Package jsonschema provides a JSON schema validator that is tailored for | ||
| // validations of governor's Extension Resources | ||
| package jsonschema |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,13 @@ | ||
| package jsonschema | ||
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| import "errors" | ||
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| var ( | ||
| // ErrInvalidUniqueProperty is returned when the schema's unique property | ||
| // is invalid | ||
| ErrInvalidUniqueProperty = errors.New(`property "unique" is invalid`) | ||
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| // ErrUniqueConstraintViolation is returned when an object violates the unique | ||
| // constrain | ||
| ErrUniqueConstraintViolation = errors.New("unique constraint violation") | ||
| ) |
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