Add CUE files for panel plugins

BarChart/backend/bar.cue

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+// Copyright 2023 The Perses Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package model
+
+import (
+	"github.com/perses/perses/cue/schemas/common"
+)
+
+kind: "BarChart"
+spec: close({
+	calculation: common.#calculation
+	format?:     common.#format
+	sort?:       "asc" | "desc"
+	mode?:       "value" | "percentage"
+})

BarChart/backend/bar.json

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+{
+  "kind": "BarChart",
+  "spec": {
+    "calculation": "last-number",
+    "format": {
+      "unit": "percent",
+      "decimalPlaces": 2
+    },
+    "sort": "desc",
+    "mode": "value"
+  }
+}

BarChart/backend/migrate.cue

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+ if #panel.type != _|_ if #panel.type == "bargauge" {
+	kind: "BarChart"
+	spec: {
+		#calcName:   *"\(#panel.options.reduceOptions.calcs[0])" | null // only consider [0] here as Perses's BarChart doesn't support individual calcs
+		calculation: [// switch
+				if #mapping.calc[#calcName] != _|_ {#mapping.calc[#calcName]},
+				{#defaultCalc},
+		][0]
+
+		#unitPath: *"\(#panel.fieldConfig.defaults.unit)" | null
+		if #unitPath != null if #mapping.unit[#unitPath] != _|_ {
+			format: {
+				unit: #mapping.unit[#unitPath]
+			}
+		}
+		#decimal: *(#panel.fieldConfig.defaults.decimal) | null
+		if #decimal != null {
+			format: {
+				decimalPlaces: #decimal
+			}
+		}
+	}
+}

BarChart/cue.mod/module.cue

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+module: "github.com/perses/plugins/barchart@v0"
+language: {
+	version: "v0.10.0"
+}

BarChart/cue.mod/pkg/github.com/perses/perses/cue/schemas/common/calculation.cue

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+// Copyright 2023 The Perses Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package common
+
+#calculation: "first" | *"last" | "first-number" | "last-number" | "mean" | "sum" | "min" | "max"

BarChart/cue.mod/pkg/github.com/perses/perses/cue/schemas/common/format.cue

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+// Copyright 2023 The Perses Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package common
+
+#format: #timeFormat | #percentFormat | #decimalFormat | #bytesFormat | #throughputFormat
+
+#timeFormat: {
+	unit:           "milliseconds" | "seconds" | "minutes" | "hours" | "days" | "weeks" | "months" | "years"
+	decimalPlaces?: number
+}
+
+#percentFormat: {
+	unit:           "percent" | "percent-decimal"
+	decimalPlaces?: number
+}
+
+#decimalFormat: {
+	unit:           "decimal"
+	decimalPlaces?: number
+	shortValues?:   bool
+}
+
+#bytesFormat: {
+	unit:           "bytes"
+	decimalPlaces?: number
+	shortValues?:   bool
+}
+
+#throughputFormat: {
+	unit:           "bits/sec" | "bytes/sec" | "counts/sec" | "events/sec" | "messages/sec" | "ops/sec" | "packets/sec" | "reads/sec" | "records/sec" | "requests/sec" | "rows/sec" | "writes/sec"
+	decimalPlaces?: number
+	shortValues?:   bool
+}

BarChart/cue.mod/pkg/github.com/perses/perses/cue/schemas/common/proxy/http.cue

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+// Copyright 2023 The Perses Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package proxy
+
+import (
+	"github.com/perses/perses/cue/schemas/common"
+)
+
+#HTTPAllowedEndpoint: {
+	endpointPattern: string
+	method:          "POST" | "PUT" | "PATCH" | "GET" | "DELETE"
+}
+
+#HTTPProxy: {
+	kind: "HTTPProxy"
+	spec: {
+		// url is the url of the datasource. It is not the url of the proxy.
+		// The Perses server is the proxy, so it needs to know where to redirect the request.
+		url: common.#url
+		// allowedEndpoints is a list of tuples of http methods and http endpoints that will be accessible.
+		// Leave it empty if you don't want to restrict the access to the datasource.
+		allowedEndpoints?: [...#HTTPAllowedEndpoint]
+		// headers can be used to provide additional headers that need to be forwarded when requesting the datasource
+		headers?: {[string]: string}
+		// secret is the name of the secret that should be used for the proxy or discovery configuration
+		// It will contain any sensitive information such as password, token, certificate.
+		secret?: string
+	}
+}

BarChart/cue.mod/pkg/github.com/perses/perses/cue/schemas/common/threshold.cue

@@ -0,0 +1,26 @@
+// Copyright 2023 The Perses Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package common
+
+#stepOption: {
+	value:  number
+	color?: string
+	name?:  string
+}
+
+#thresholds: {
+	mode?:         "percent" | "absolute"
+	defaultColor?: string
+	steps?: [...#stepOption]
+}

BarChart/cue.mod/pkg/github.com/perses/perses/cue/schemas/common/url.cue

@@ -0,0 +1,16 @@
+// Copyright 2023 The Perses Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package common
+
+#url: =~"^https?:\/\/[^\\s\/$.?#].[^\\s]*$"

GaugeChart/backend/gauge.cue

@@ -0,0 +1,26 @@
+// Copyright 2023 The Perses Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package model
+
+import (
+	"github.com/perses/perses/cue/schemas/common"
+)
+
+kind: "GaugeChart"
+spec: close({
+	calculation: common.#calculation
+	format?:     common.#format
+	thresholds?: common.#thresholds
+	max?:        number // determines end value of last threshold color segment when unit is not a percent
+})

GaugeChart/backend/gauge.json

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+{
+  "kind": "GaugeChart",
+  "spec": {
+    "calculation": "last-number",
+    "format": {
+      "unit": "percent",
+      "decimalPlaces": 2
+    },
+    "thresholds": {
+      "steps": [
+        {
+          "value": 85
+        },
+        {
+          "value": 95
+        }
+      ]
+    }
+  }
+}

GaugeChart/backend/migrate.cue

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+if #panel.type != _|_ if #panel.type == "gauge" {
+	kind: "GaugeChart"
+	spec: {
+		#calcName: *"\(#panel.options.reduceOptions.calcs[0])" | null // only consider [0] here as Perses's GaugeChart doesn't support individual calcs
+		calculation: [// switch
+			if #mapping.calc[#calcName] != _|_ {#mapping.calc[#calcName]},
+			#defaultCalc,
+		][0]
+
+		#unitPath: *"\(#panel.fieldConfig.defaults.unit)" | null
+		if #unitPath != null if #mapping.unit[#unitPath] != _|_ {
+			format: {
+				unit: #mapping.unit[#unitPath]
+			}
+		}
+		#decimal: *(#panel.fieldConfig.defaults.decimal) | null
+		if #decimal != null {
+			format: {
+				decimalPlaces: #decimal
+			}
+		}
+
+		if #panel.fieldConfig.defaults.thresholds != _|_ if #panel.fieldConfig.defaults.thresholds.steps != _|_ {
+			thresholds: {
+				// defaultColor: TODO how to fill this one?
+				steps: [for _, step in #panel.fieldConfig.defaults.thresholds.steps if step.value != _|_ {
+					value: [// switch
+						if step.value == null {0},
+						step.value,
+					][0]
+					color: step.color
+				}]
+			}
+		}
+		if #panel.fieldConfig.defaults.max != _|_ {
+			max: #panel.fieldConfig.defaults.max
+		}
+	}
+},

GaugeChart/cue.mod/module.cue

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+module: "github.com/perses/plugins/gaugechart@v0"
+language: {
+	version: "v0.10.0"
+}

GaugeChart/cue.mod/pkg/github.com/perses/perses/cue/schemas/common/calculation.cue

@@ -0,0 +1,16 @@
+// Copyright 2023 The Perses Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package common
+
+#calculation: "first" | *"last" | "first-number" | "last-number" | "mean" | "sum" | "min" | "max"

GaugeChart/cue.mod/pkg/github.com/perses/perses/cue/schemas/common/format.cue

@@ -0,0 +1,44 @@
+// Copyright 2023 The Perses Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package common
+
+#format: #timeFormat | #percentFormat | #decimalFormat | #bytesFormat | #throughputFormat
+
+#timeFormat: {
+	unit:           "milliseconds" | "seconds" | "minutes" | "hours" | "days" | "weeks" | "months" | "years"
+	decimalPlaces?: number
+}
+
+#percentFormat: {
+	unit:           "percent" | "percent-decimal"
+	decimalPlaces?: number
+}
+
+#decimalFormat: {
+	unit:           "decimal"
+	decimalPlaces?: number
+	shortValues?:   bool
+}
+
+#bytesFormat: {
+	unit:           "bytes"
+	decimalPlaces?: number
+	shortValues?:   bool
+}
+
+#throughputFormat: {
+	unit:           "bits/sec" | "bytes/sec" | "counts/sec" | "events/sec" | "messages/sec" | "ops/sec" | "packets/sec" | "reads/sec" | "records/sec" | "requests/sec" | "rows/sec" | "writes/sec"
+	decimalPlaces?: number
+	shortValues?:   bool
+}