# Lulz Ltd Common Library Chart

A [Helm Library Chart](https://helm.sh/docs/topics/library_charts/#helm) for grouping common logic between charts.

## Introduction

This chart provides a common template helpers which can be used to develop new charts using [Helm](https://helm.sh) package manager.

## Parameters

The following table lists the helpers available in the library which are scoped in different sections.

### Labels

| Helper identifier           | Description                                                                 | Expected Input    |
|-----------------------------|-----------------------------------------------------------------------------|-------------------|
| `common.labels.matchLabels` | Labels to use on `deploy.spec.selector.matchLabels` and `svc.spec.selector` | `.` Chart context |
| `common.labels.standard`    | Return Kubernetes standard labels                                           | `.` Chart context |

### Names

| Helper identifier                 | Description                                                           | Expected Input    |
|-----------------------------------|-----------------------------------------------------------------------|-------------------|
| `common.names.chart`              | Chart name plus version                                               | `.` Chart context |
| `common.names.fullname`           | Create a default fully qualified app name.                            | `.` Chart context |
| `common.names.fullname.namespace` | Create a fully qualified app name adding the installation's namespace | `.` Chart context |
| `common.names.name`               | Expand the name of the chart or use `.Values.nameOverride`            | `.` Chart context |
| `common.names.namespace`          | Allow the release namespace to be overridden                          | `.` Chart context |

### TplValues

| Helper identifier                  | Description                                                         | Expected Input                                                                                                                                           |
|------------------------------------|---------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------|
| `common.tplvalues.render`          | Renders a value that contains template                              | `dict "value" .Values.path.to.the.Value "context" $`, value is the value should rendered as template, context frequently is the chart context `$` or `.` |
| `common.tplvalues.merge`           | Merge a list of values that contains template after rendering them. | `dict "values" (list .Values.path.to.the.Value1 .Values.path.to.the.Value2) "context" $`                                                                 |
| `common.tplvalues.merge-overwrite` | Merge a list of values that contains template after rendering them. | `dict "values" (list .Values.path.to.the.Value1 .Values.path.to.the.Value2) "context" $`                                                                 |