milo: buildbucket builer view

appengine/cmd/milo/buildbucket/properties.go

Index: appengine/cmd/milo/buildbucket/properties.go
diff --git a/appengine/cmd/milo/buildbucket/properties.go b/appengine/cmd/milo/buildbucket/properties.go
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+// Copyright 2016 The LUCI Authors. All rights reserved.
+// Use of this source code is governed under the Apache License, Version 2.0
+// that can be found in the LICENSE file.
+
+package buildbucket
+
+import (
+	"bytes"
+	"strconv"
+)
+
+// This file is about buildbucket build params in the format supported by
+// Buildbot.
+
+// properties is well-established build properties.
+type properties struct {
+	PatchStorage string `json:"patch_storage"` // e.g. "rietveld", "gerrit"
+
+	RietveldURL string `json:"rietveld"` // e.g. "https://codereview.chromium.org"
+	Issue       number `json:"issue"`    // e.g. 2127373005
+	PatchSet    number `json:"patchset"` // e.g. 40001
+
+	GerritURL          string `json:"gerrit"`              // e.g. "https://chromium-review.googlesource.com"
+	GerritChangeNumber int    `json:"event.change.number"` // e.g. 358171
+	GerritChangeID     string `json:"event.change.id"`     // e.g. "infra%2Finfra~master~Iee05b76799d577d491f533b8acaa4560ac14a806"
+	GerritChangeURL    string `json:"event.change.url"`    // e.g. "https://chromium-review.googlesource.com/#/c/358171"
+	GerritPatchRef     string `json:"event.patchSet.ref"`  // e.g. "refs/changes/71/358171/2"
+
+	Revision  string   `json:"revision"`  // e.g. "0b04861933367c62630751702c84fd64bc3caf6f"
+	BlameList []string `json:"blamelist"` // e.g. ["someone@chromium.org"]
+
+	// Fields below are present only in ResultDetails.
+
+	GotRevision string `json:"got_revision"` // e.g. "0b04861933367c62630751702c84fd64bc3caf6f"
+	BuildNumber int    `json:"buildnumber"`  // e.g. 3021
+}
+
+// number is an integer that supports JSON unmarshalling from a string.
+type number int
+
+// UnmarshalJSON parses data as an integer, whether data is a number or string.
+func (n *number) UnmarshalJSON(data []byte) error {
+	data = bytes.Trim(data, `"`)
+	num, err := strconv.Atoi(string(data))
+	if err == nil {
+		*n = number(num)
+	}
+	return err
+}
+
+// change is used in "changes" buildbucket parameters; supported by buildbot
+// See https://chromium.googlesource.com/chromium/tools/build/+/master/scripts/master/buildbucket/README.md#Build-parameters
+type change struct {
+	Author struct{ Email string }
+}
+
+// buildParameters is contents of "parameters_json" buildbucket build field
+// in the format supported by Buildbot, see
+// // See https://chromium.googlesource.com/chromium/tools/build/+/master/scripts/master/buildbucket/README.md#Build-parameters
+//
+// Buildbucket is not aware of this format, but majority of chrome-infra is.
+type buildParameters struct {
+	BuilderName string `json:"builder_name"`
+	Properties  properties
+	Changes     []change
+}
+
+// resultDetails is contents of "result_details_json" buildbucket build field
+// in the format supported by Buildbot.
+type resultDetails struct {
+	Properties properties
+}