| package atscfg |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| import ( |
| "strconv" |
| |
| "github.com/apache/trafficcontrol/lib/go-tc" |
| ) |
| |
| const VolumeFileName = StorageFileName |
| const ContentTypeVolumeDotConfig = ContentTypeTextASCII |
| const LineCommentVolumeDotConfig = LineCommentHash |
| |
| // VolumeDotConfigOpts contains settings to configure generation options. |
| type VolumeDotConfigOpts struct { |
| // HdrComment is the header comment to include at the beginning of the file. |
| // This should be the text desired, without comment syntax (like # or //). The file's comment syntax will be added. |
| // To omit the header comment, pass the empty string. |
| HdrComment string |
| } |
| |
| // MakeVolumeDotConfig creates volume.config for a given ATS Profile. |
| // The paramData is the map of parameter names to values, for all parameters assigned to the given profile, with the config_file "storage.config". |
| func MakeVolumeDotConfig( |
| server *Server, |
| serverParams []tc.Parameter, |
| opt *VolumeDotConfigOpts, |
| ) (Cfg, error) { |
| if opt == nil { |
| opt = &VolumeDotConfigOpts{} |
| } |
| warnings := []string{} |
| |
| if len(server.ProfileNames) == 0 { |
| return Cfg{}, makeErr(warnings, "server missing Profiles") |
| } |
| |
| paramData, paramWarns := paramsToMap(filterParams(serverParams, VolumeFileName, "", "", "")) |
| warnings = append(warnings, paramWarns...) |
| |
| hdr := makeHdrComment(opt.HdrComment) |
| |
| numVolumes := getNumVolumes(paramData) |
| |
| hdr += "# TRAFFIC OPS NOTE: This is running with forced volumes - the size is irrelevant\n" |
| text := "" |
| nextVolume := 1 |
| if drivePrefix := paramData["Drive_Prefix"]; drivePrefix != "" { |
| text += volumeText(strconv.Itoa(nextVolume), numVolumes) |
| nextVolume++ |
| } |
| if ramDrivePrefix := paramData["RAM_Drive_Prefix"]; ramDrivePrefix != "" { |
| text += volumeText(strconv.Itoa(nextVolume), numVolumes) |
| nextVolume++ |
| } |
| if ssdDrivePrefix := paramData["SSD_Drive_Prefix"]; ssdDrivePrefix != "" { |
| text += volumeText(strconv.Itoa(nextVolume), numVolumes) |
| nextVolume++ |
| } |
| |
| if text == "" { |
| text = "\n" // If no params exist, don't send "not found," but an empty file. We know the profile exists. |
| } |
| |
| return Cfg{ |
| Text: hdr + text, |
| ContentType: ContentTypeVolumeDotConfig, |
| LineComment: LineCommentVolumeDotConfig, |
| Warnings: warnings, |
| }, nil |
| } |
| |
| func volumeText(volume string, numVolumes int) string { |
| return "volume=" + volume + " scheme=http size=" + strconv.Itoa(100/numVolumes) + "%\n" |
| } |
| |
| func getNumVolumes(paramData map[string]string) int { |
| num := 0 |
| drivePrefixes := []string{"Drive_Prefix", "SSD_Drive_Prefix", "RAM_Drive_Prefix"} |
| for _, pre := range drivePrefixes { |
| if _, ok := paramData[pre]; ok { |
| num++ |
| } |
| } |
| return num |
| } |