@grafana/data#Threshold TypeScript Examples

The following examples show how to use @grafana/data#Threshold. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example #1

Source File: Gauge.tsx From grafana-chinese with Apache License 2.0

6 votes

getFormattedThresholds(): Threshold[] {
    const { field, theme } = this.props;
    const thresholds = field.thresholds ?? Gauge.defaultProps.field?.thresholds!;
    const isPercent = thresholds.mode === ThresholdsMode.Percentage;
    const steps = thresholds.steps;
    let min = field.min!;
    let max = field.max!;
    if (isPercent) {
      min = 0;
      max = 100;
    }

    const first = getActiveThreshold(min, steps);
    const last = getActiveThreshold(max, steps);
    const formatted: Threshold[] = [];
    formatted.push({ value: min, color: getColorFromHexRgbOrName(first.color, theme.type) });
    let skip = true;
    for (let i = 0; i < steps.length; i++) {
      const step = steps[i];
      if (skip) {
        if (first === step) {
          skip = false;
        }
        continue;
      }
      const prev = steps[i - 1];
      formatted.push({ value: step.value, color: getColorFromHexRgbOrName(prev!.color, theme.type) });
      if (step === last) {
        break;
      }
    }
    formatted.push({ value: max, color: getColorFromHexRgbOrName(last.color, theme.type) });
    return formatted;
  }

Example #2

Source File: SingleStatBaseOptions.ts From grafana-chinese with Apache License 2.0

6 votes

export function migrateOldThresholds(thresholds?: any[]): Threshold[] | undefined {
  if (!thresholds || !thresholds.length) {
    return undefined;
  }
  const copy = thresholds.map(t => {
    return {
      // Drops 'index'
      value: t.value === null ? -Infinity : t.value,
      color: t.color,
    };
  });
  sortThresholds(copy);
  copy[0].value = -Infinity;
  return copy;
}

Example #3

Source File: ThresholdsEditor.tsx From grafana-chinese with Apache License 2.0

6 votes

function toThresholdsWithKey(thresholds?: ThresholdsConfig): ThresholdWithKey[] {
  thresholds = getThresholdOrDefault(thresholds);

  let steps: Threshold[] = thresholds.steps || [];

  if (thresholds.steps && thresholds.steps.length === 0) {
    steps = [{ value: -Infinity, color: 'green' }];
  }

  return steps.map(t => {
    return {
      color: t.color,
      value: t.value === null ? -Infinity : t.value,
      key: counter++,
    };
  });
}

Example #4

Source File: ThresholdsEditor.tsx From grafana-chinese with Apache License 2.0

6 votes

function toThresholdsWithKey(steps?: Threshold[]): ThresholdWithKey[] {
  if (!steps || steps.length === 0) {
    steps = [{ value: -Infinity, color: 'green' }];
  }

  return steps.map(t => {
    return {
      color: t.color,
      value: t.value === null ? -Infinity : t.value,
      key: counter++,
    };
  });
}

Example #5

Source File: SingleStatBaseOptions.ts From grafana-chinese with Apache License 2.0

5 votes

export function sharedSingleStatPanelChangedHandler(
  options: Partial<SingleStatBaseOptions> | any,
  prevPluginId: string,
  prevOptions: any
) {
  // Migrating from angular singlestat
  if (prevPluginId === 'singlestat' && prevOptions.angular) {
    const panel = prevOptions.angular;
    const reducer = fieldReducers.getIfExists(panel.valueName);
    const options = {
      fieldOptions: {
        defaults: {} as FieldConfig,
        overrides: [] as ConfigOverrideRule[],
        calcs: [reducer ? reducer.id : ReducerID.mean],
      },
      orientation: VizOrientation.Horizontal,
    };

    const defaults = options.fieldOptions.defaults;
    if (panel.format) {
      defaults.unit = panel.format;
    }
    if (panel.nullPointMode) {
      defaults.nullValueMode = panel.nullPointMode;
    }
    if (panel.nullText) {
      defaults.noValue = panel.nullText;
    }
    if (panel.decimals || panel.decimals === 0) {
      defaults.decimals = panel.decimals;
    }

    // Convert thresholds and color values
    if (panel.thresholds && panel.colors) {
      const levels = panel.thresholds.split(',').map((strVale: string) => {
        return Number(strVale.trim());
      });

      // One more color than threshold
      const thresholds: Threshold[] = [];
      for (const color of panel.colors) {
        const idx = thresholds.length - 1;
        if (idx >= 0) {
          thresholds.push({ value: levels[idx], color });
        } else {
          thresholds.push({ value: -Infinity, color });
        }
      }
      defaults.thresholds = {
        mode: ThresholdsMode.Absolute,
        steps: thresholds,
      };
    }

    // Convert value mappings
    const mappings = convertOldAngularValueMapping(panel);
    if (mappings && mappings.length) {
      defaults.mappings = mappings;
    }

    if (panel.gauge && panel.gauge.show) {
      defaults.min = panel.gauge.minValue;
      defaults.max = panel.gauge.maxValue;
    }
    return options;
  }

  for (const k of optionsToKeep) {
    if (prevOptions.hasOwnProperty(k)) {
      options[k] = cloneDeep(prevOptions[k]);
    }
  }
  return options;
}