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heatmap_chart.go
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heatmap_chart.go
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package signalform
import (
"encoding/json"
"fmt"
"math"
"strings"
"github.com/hashicorp/terraform/helper/schema"
)
func heatmapChartResource() *schema.Resource {
return &schema.Resource{
Schema: map[string]*schema.Schema{
"synced": &schema.Schema{
Type: schema.TypeBool,
Optional: true,
Default: true,
Description: "Whether the resource in SignalForm and SignalFx are identical or not. Used internally for syncing.",
},
"last_updated": &schema.Schema{
Type: schema.TypeFloat,
Computed: true,
Description: "Latest timestamp the resource was updated",
},
"resource_url": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Default: CHART_URL,
Description: "API URL of the chart",
},
"url": &schema.Schema{
Type: schema.TypeString,
Computed: true,
Description: "URL of the chart",
},
"name": &schema.Schema{
Type: schema.TypeString,
Required: true,
Description: "Name of the chart",
},
"description": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Description: "Description of the chart (Optional)",
},
"program_text": &schema.Schema{
Type: schema.TypeString,
Required: true,
Description: "Signalflow program text for the chart. More info at \"https://developers.signalfx.com/docs/signalflow-overview\"",
},
"unit_prefix": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Description: "(Metric by default) Must be \"Metric\" or \"Binary\"",
},
"minimum_resolution": &schema.Schema{
Type: schema.TypeInt,
Optional: true,
Description: "The minimum resolution (in seconds) to use for computing the underlying program",
},
"max_delay": &schema.Schema{
Type: schema.TypeInt,
Optional: true,
Description: "How long (in seconds) to wait for late datapoints",
ValidateFunc: validateMaxDelayValue,
},
"disable_sampling": &schema.Schema{
Type: schema.TypeBool,
Optional: true,
Default: false,
Description: "(false by default) If false, samples a subset of the output MTS, which improves UI performance",
},
"group_by": &schema.Schema{
Type: schema.TypeList,
Optional: true,
Elem: &schema.Schema{Type: schema.TypeString},
Description: "Properties to group by in the heatmap (in nesting order)",
},
"sort_by": &schema.Schema{
Type: schema.TypeString,
Optional: true,
ValidateFunc: validateSortBy,
Description: "The property to use when sorting the elements. Must be prepended with + for ascending or - for descending (e.g. -foo)",
},
"color_range": &schema.Schema{
Type: schema.TypeSet,
Optional: true,
Description: "Values and color for the color range. Example: colorRange : { min : 0, max : 100, color : \"blue\" }",
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
"min_value": &schema.Schema{
Type: schema.TypeFloat,
Optional: true,
Default: -math.MaxFloat32,
Description: "The minimum value within the coloring range",
},
"max_value": &schema.Schema{
Type: schema.TypeFloat,
Optional: true,
Default: math.MaxFloat32,
Description: "The maximum value within the coloring range",
},
"color": &schema.Schema{
Type: schema.TypeString,
Required: true,
Description: "The color range to use. Must be either \"gray\", \"blue\", \"navy\", \"orange\", \"yellow\", \"magenta\", \"purple\", \"violet\", \"lilac\", \"green\", \"aquamarine\"",
ValidateFunc: validateHeatmapChartColor,
},
},
},
},
"color_scale": &schema.Schema{
Type: schema.TypeSet,
Optional: true,
Description: "Single color range including both the color to display for that range and the borders of the range",
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
"gt": &schema.Schema{
Type: schema.TypeFloat,
Optional: true,
Default: math.MaxFloat32,
Description: "Indicates the lower threshold non-inclusive value for this range",
},
"gte": &schema.Schema{
Type: schema.TypeFloat,
Optional: true,
Default: math.MaxFloat32,
Description: "Indicates the lower threshold inclusive value for this range",
},
"lt": &schema.Schema{
Type: schema.TypeFloat,
Optional: true,
Default: math.MaxFloat32,
Description: "Indicates the upper threshold non-inculsive value for this range",
},
"lte": &schema.Schema{
Type: schema.TypeFloat,
Optional: true,
Default: math.MaxFloat32,
Description: "Indicates the upper threshold inclusive value for this range",
},
"color": &schema.Schema{
Type: schema.TypeString,
Required: true,
Description: "The color to use. Must be either \"gray\", \"blue\", \"navy\", \"orange\", \"yellow\", \"magenta\", \"purple\", \"violet\", \"lilac\", \"green\", \"aquamarine\"",
ValidateFunc: validateHeatmapChartColor,
},
},
},
},
"hide_timestamp": &schema.Schema{
Type: schema.TypeBool,
Optional: true,
Default: false,
Description: "(false by default) Whether to show the timestamp in the chart",
},
},
Create: heatmapchartCreate,
Read: heatmapchartRead,
Update: heatmapchartUpdate,
Delete: heatmapchartDelete,
}
}
/*
Use Resource object to construct json payload in order to create an Heatmap chart
*/
func getPayloadHeatmapChart(d *schema.ResourceData) ([]byte, error) {
payload := map[string]interface{}{
"name": d.Get("name").(string),
"description": d.Get("description").(string),
"programText": sanitizeProgramText(d.Get("program_text").(string)),
}
viz := getHeatmapOptionsChart(d)
if len(viz) > 0 {
payload["options"] = viz
}
return json.Marshal(payload)
}
func getHeatmapColorRangeOptions(d *schema.ResourceData) map[string]interface{} {
item := make(map[string]interface{})
colorRange := d.Get("color_range").(*schema.Set).List()
for _, options := range colorRange {
options := options.(map[string]interface{})
if val, ok := options["min_value"]; ok {
if val.(float64) != -math.MaxFloat32 {
item["min"] = val.(float64)
}
}
if val, ok := options["max_value"]; ok {
if val.(float64) != math.MaxFloat32 {
item["max"] = val.(float64)
}
}
color := options["color"].(string)
for _, colorStruct := range ChartColorsSlice {
if color == colorStruct.name {
item["color"] = colorStruct.name
break
}
}
}
return item
}
func getHeatmapOptionsChart(d *schema.ResourceData) map[string]interface{} {
viz := make(map[string]interface{})
viz["type"] = "Heatmap"
if val, ok := d.GetOk("unit_prefix"); ok {
viz["unitPrefix"] = val.(string)
}
programOptions := make(map[string]interface{})
if val, ok := d.GetOk("minimum_resolution"); ok {
programOptions["minimumResolution"] = val.(int) * 1000
}
if val, ok := d.GetOk("max_delay"); ok {
programOptions["maxDelay"] = val.(int) * 1000
}
programOptions["disableSampling"] = d.Get("disable_sampling").(bool)
viz["programOptions"] = programOptions
if groupByOptions, ok := d.GetOk("group_by"); ok {
viz["groupBy"] = groupByOptions.([]interface{})
}
if sortProperty, ok := d.GetOk("sort_by"); ok {
sortBy := sortProperty.(string)
viz["sortProperty"] = sortBy[1:]
if strings.HasPrefix(sortBy, "+") {
viz["sortDirection"] = "Ascending"
} else {
viz["sortDirection"] = "Descending"
}
}
if colorRangeOptions := getHeatmapColorRangeOptions(d); len(colorRangeOptions) > 0 {
viz["colorBy"] = "Range"
viz["colorRange"] = colorRangeOptions
} else if colorScaleOptions := getColorScaleOptions(d); len(colorScaleOptions) > 0 {
viz["colorBy"] = "Scale"
viz["colorScale2"] = colorScaleOptions
}
viz["timestampHidden"] = d.Get("hide_timestamp").(bool)
return viz
}
func heatmapchartCreate(d *schema.ResourceData, meta interface{}) error {
config := meta.(*signalformConfig)
payload, err := getPayloadHeatmapChart(d)
if err != nil {
return fmt.Errorf("Failed creating json payload: %s", err.Error())
}
return resourceCreate(CHART_API_URL, config.AuthToken, payload, d)
}
func heatmapchartRead(d *schema.ResourceData, meta interface{}) error {
config := meta.(*signalformConfig)
url := fmt.Sprintf("%s/%s", CHART_API_URL, d.Id())
return resourceRead(url, config.AuthToken, d)
}
func heatmapchartUpdate(d *schema.ResourceData, meta interface{}) error {
config := meta.(*signalformConfig)
payload, err := getPayloadHeatmapChart(d)
if err != nil {
return fmt.Errorf("Failed creating json payload: %s", err.Error())
}
url := fmt.Sprintf("%s/%s", CHART_API_URL, d.Id())
return resourceUpdate(url, config.AuthToken, payload, d)
}
func heatmapchartDelete(d *schema.ResourceData, meta interface{}) error {
config := meta.(*signalformConfig)
url := fmt.Sprintf("%s/%s", CHART_API_URL, d.Id())
return resourceDelete(url, config.AuthToken, d)
}
/*
Validates the color_range field against a list of allowed words.
*/
func validateHeatmapChartColor(v interface{}, k string) (we []string, errors []error) {
value := v.(string)
keys := make([]string, 0, len(ChartColorsSlice))
found := false
for _, item := range ChartColorsSlice {
if value == item.name {
found = true
}
keys = append(keys, item.name)
}
if !found {
joinedColors := strings.Join(keys, ",")
errors = append(errors, fmt.Errorf("%s not allowed; must be either %s", value, joinedColors))
}
return
}