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133 lines
3.2 KiB
Markdown
133 lines
3.2 KiB
Markdown
# Naming Conventions
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## General Naming Rules
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* Use American English
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* Don't use acronyms
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* Use `camelCase` unless stated otherwise
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* Reconcile terms with adidas CDM
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Every identifier **MUST** be in American English and written in `lowercase`. An identifier **SHOULD NOT** contain acronyms. CamelCase \(`camelCase`\) **MUST** be used to delimit combined words.
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## URI
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Every URI **MUST** follow the General Rules except for the `camelCase` rule. Instead, a hyphen \(`-`\) **SHOULD** be used to delimit combined words \(kebab-case\). Besides, a URI **MUST NOT** end with a trailing slash \(`/`\).
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#### Example
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A well-formed URI:
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```text
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/system-orders/1234/author
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```
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### Query Parameters and Path Fragments
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Every URI query parameter or fragment **MUST** follow the General Rules. Also, they **MUST NOT** clash with the [reserved query parameter names](https://tools.adidas-group.com/confluence/display/EA/API+Interaction#APIInteraction-Query_Parameters).
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### URI Template Variables
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In addition to General Naming Rules, URI Template Variable names **MUST** follow the [RFC6570](https://tools.ietf.org/html/rfc6570#section-2.3). That is, the variable names can consist only from `ALPHA / DIGIT / "_" / pct-encoded`.
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> NOTE: Per RFC6570 Hyphen \(`-`\) is NOT legal URI Template variable name character.
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#### Example
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A well-formed URI Template Variable:
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```text
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/system-orders/{orderId}/author
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```
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## Representation Format Fields
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Every representation format field **MUST** conform to the General Naming Rules.
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#### Example
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A well-formed resource representation:
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```javascript
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{
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"_links": {
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"self": {
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"href": "/orders/1234"
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},
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"author": {
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"href": "/users/john"
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}
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},
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"orderNumber": 1234,
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"itemCount": 42,
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"status": "pending"
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}
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```
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## Relation Type Identifier
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Every custom [relation identifier](https://github.com/for-GET/know-your-http-well/blob/master/relations.md) **MUST** be in `lowercase` with words separated by the hyphen \(`-`\).
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#### Example
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A well-formed resource representation with custom relation `fulfillment-provider`:
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```javascript
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{
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"_links": {
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"fulfillment-provider": {
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"href": "/users/natalie"
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}
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}
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}
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```
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## HTTP Headers
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Every HTTP Header should use `Hyphenated-Pascal-Case`. A custom HTTP Header **SHOULD NOT** start with `X-` \([RFC6648](https://tools.ietf.org/html/rfc6648)\).
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#### Example
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```text
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Order-Metadata-Header: 42
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```
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## API Description
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Naming conventions within API Description document.
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### API Name
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Every API Description API name **MUST** start with API domain enclosed in square brackets \(e.g. `[API Domain] My API`\). Words **MUST** be separated by space.
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#### Example
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```yaml
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swagger: '2.0'
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info:
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version: '1.0.0'
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title: '[Demo] Orders API'
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```
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### Resource Name
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Every resource **MUST** have a name \(defined by `x-summary` field\). Resource name **MUST** be in `Title Case`. Words **MUST** be separated by a space.
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#### Example
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```yaml
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/orders:
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x-summary: List of Orders
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```
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### Action Name
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Every action \(operation\) **MUST** have a name \(defined by `summary` field\). Action name **MUST** be in `Title Case`. Words **MUST** be separated by a space.
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#### Example
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```yaml
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get:
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summary: Retrieve List of Orders
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```
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