📝 Updates the Swagger Docs

This change implements the category / rule Server which will showcase
storig arbirtray alongside the hostname which are not part of hostname
generation.

api/auth_handlers.go

@@ -0,0 +1,37 @@
+// Copyright 2024 Florian Beisel
+//
+// 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 api
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+)
+
+// Helloworld godoc
+//
+//	@Summary	Check your authentication
+//	@Schemes
+//	@Description	Checks whether the user is successfully authenticated
+//	@ID				hello
+//	@Tags			Authentication
+//	@Accept			json
+//	@Produce		json
+//	@Security		Bearer
+//	@Success		200	{string}	Helloworld
+//	@Router			/hello [get]
+func Helloworld(g *gin.Context) {
+	g.JSON(http.StatusOK, "helloworld")
+}

api/handlers.go

@@ -1,161 +0,0 @@
-package api
-
-import (
-	"errors"
-	"net/http"
-	"strings"
-
-	"git.beisel.it/florian/hostname-service/db"
-	"git.beisel.it/florian/hostname-service/models"
-	"git.beisel.it/florian/hostname-service/rules"
-	"github.com/gin-gonic/gin"
-)
-
-func getHostnameRuleByCategory(category string) (rules.HostnameRule, error) {
-	switch category {
-	case "notebook":
-		return &rules.NotebookRule{}, nil
-	// ... other categories
-	default:
-		return nil, errors.New("unknown category")
-	}
-}
-
-// CreateOrUpdateHostname handles the hostname generation
-func CreateOrUpdateHostname(c *gin.Context, isUpdate bool) {
-	category := c.Param("category")
-	var oldHostname string
-	if isUpdate {
-		oldHostname = c.Param("oldhostname")
-	}
-
-	var params map[string]interface{}
-	if err := c.BindJSON(&params); err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid parameters"})
-		return
-	}
-
-	rule, err := getHostnameRuleByCategory(category)
-	if err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
-		return
-	}
-
-	hostname, paramsJSON, err := rule.Generate(params)
-	if err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
-		return
-	}
-
-	if isUpdate {
-		err = rule.Update(category, oldHostname, hostname, paramsJSON)
-		if err != nil {
-			if strings.Contains(err.Error(), "does not exist") {
-				c.JSON(http.StatusNotFound, gin.H{"error": err.Error()})
-				return
-			} else {
-				c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
-				return
-			}
-		}
-	} else {
-		err = rule.Insert(category, hostname, paramsJSON)
-	}
-	if err != nil {
-		c.JSON(http.StatusInternalServerError, gin.H{"error": "Error processing hostname"})
-		return
-	}
-
-	response := models.SimpleHostnameResponse{Hostname: hostname}
-	c.JSON(http.StatusOK, response)
-}
-
-//	@Summary		Delete a hostname from the database
-//	@Description	List all details for a given category
-//	@ID				delete-hostnames-by-category-and-name
-//	@Produce		json
-//	@Param			category	path		string							true	"Category of the hostname"
-//	@Param			hostname	path		string							true	"Hostname to delete"
-//	@Success		200			{object}	models.SimpleHostnameResponse	"Hostname"
-//	@Security		Bearer
-//	@Tags			Manipulate existing Hostnames
-//	@Router			/{category}/{hostname} [delete]
-func DeleteHostname(c *gin.Context) {
-	category := c.Param("category")
-	hostname := c.Param("hostname")
-
-	err := db.DeleteHostname(category, hostname)
-	if err != nil {
-		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
-		return
-	}
-	response := models.SimpleHostnameResponse{Hostname: hostname}
-	c.JSON(http.StatusOK, response)
-}
-
-//	@Summary		Return a list of hosts and their details filtered by category
-//	@Description	List all details for a given category
-//	@ID				list-hostnames-by-category
-//	@Produce		json
-//	@Param			category	path	string			true	"Category of the hostname"
-//	@Success		200			{array}	models.Hostname	"An array of responses"
-//	@Security		Bearer
-//	@Tags			Querying Hostnames
-//	@Router			/{category} [get]
-func ListHostnamesByCategory(c *gin.Context) {
-	category := c.Param("category")
-
-	hostnames, err := db.GetHostnamesByCategory(category)
-	if err != nil {
-		if strings.Contains(err.Error(), "no rows found") {
-			c.JSON(http.StatusNotFound, gin.H{"error": "hostname not found"})
-		}
-		c.JSON(http.StatusInternalServerError, gin.H{"error": "Error retrieving hostnames"})
-		return
-	}
-
-	c.JSON(http.StatusOK, hostnames)
-}
-
-//	@Summary		Return a single hostname by Category and Name
-//	@Description	Return details for a single hostname identified by its category
-//	@ID				get-hostname-by-category-and-name
-//	@Produce		json
-//	@Param			category	path		string			true	"Category of the hostname"
-//	@Param			hostname	path		string			true	"Category of the hostname"
-//	@Success		200			{object}	models.Hostname	"A single response object"
-//	@Security		Bearer
-//	@Tags			Querying Hostnames
-//	@Router			/{category}/{hostname} [get]
-func GetHostnameByCategoryAndName(c *gin.Context) {
-	category := c.Param("category")
-	hostname := c.Param("hostname")
-
-	hostinfo, err := db.GetHostnameByCategoryAndName(category, hostname)
-	if err != nil {
-		if strings.Contains(err.Error(), "no rows found") {
-			c.JSON(http.StatusNotFound, gin.H{"error": "hostname not found"})
-			return
-		}
-		c.JSON(http.StatusInternalServerError, gin.H{"error": "Error retrieving hostname"})
-		return
-	}
-
-	c.JSON(http.StatusOK, hostinfo)
-}
-
-// Helloworld godoc
-//
-//	@Summary	Check your authentication
-//	@Schemes
-//	@Description	Checks whether the user is successfully authenticated
-//	@ID				hello
-//	@Tags			Authentication
-//	@Accept			json
-//	@Produce		json
-//	@Security		Bearer
-//	@Success		200	{string}	Helloworld
-//	@Router			/hello [get]
-func Helloworld(g *gin.Context) {
-	g.JSON(http.StatusOK, "helloworld")
-}

api/hostname_handlers.go

@@ -0,0 +1,137 @@
+// Copyright 2024 Florian Beisel
+//
+// 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 api
+
+import (
+	"net/http"
+	"strings"
+
+	"git.beisel.it/florian/hostname-service/db"
+	"git.beisel.it/florian/hostname-service/models"
+	"github.com/gin-gonic/gin"
+)
+
+// @Summary		Return a single hostname by Category and Name
+// @Description	Return details for a single hostname identified by its category
+// @ID				get-hostname-by-category-and-name
+// @Produce		json
+// @Param			category	path		string			true	"Category of the hostname"
+// @Param			hostname	path		string			true	"Category of the hostname"
+// @Success		200			{object}	models.Hostname	"A single response object"
+// @Security		Bearer
+// @Tags			Querying Hostnames
+// @Router			/{category}/{hostname} [get]
+func GetHostnameByCategoryAndName(c *gin.Context) {
+	category := c.Param("category")
+	hostname := c.Param("hostname")
+
+	hostinfo, err := db.GetHostnameByCategoryAndName(category, hostname)
+	if err != nil {
+		if strings.Contains(err.Error(), "no rows found") {
+			c.JSON(http.StatusNotFound, gin.H{"error": "hostname not found"})
+			return
+		}
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Error retrieving hostname"})
+		return
+	}
+
+	c.JSON(http.StatusOK, hostinfo)
+}
+
+// @Summary		Return a list of hosts and their details filtered by category
+// @Description	List all details for a given category
+// @ID				list-hostnames-by-category
+// @Produce		json
+// @Param			category	path	string			true	"Category of the hostname"
+// @Success		200			{array}	models.Hostname	"An array of responses"
+// @Security		Bearer
+// @Tags			Querying Hostnames
+// @Router			/{category} [get]
+func ListHostnamesByCategory(c *gin.Context) {
+	category := c.Param("category")
+
+	hostnames, err := db.GetHostnamesByCategory(category)
+	if err != nil {
+		if strings.Contains(err.Error(), "no rows found") {
+			c.JSON(http.StatusNotFound, gin.H{"error": "hostname not found"})
+		}
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Error retrieving hostnames"})
+		return
+	}
+
+	c.JSON(http.StatusOK, hostnames)
+}
+
+// @Summary		Delete a hostname from the database
+// @Description	List all details for a given category
+// @ID				delete-hostnames-by-category-and-name
+// @Produce		json
+// @Param			category	path		string							true	"Category of the hostname"
+// @Param			hostname	path		string							true	"Hostname to delete"
+// @Success		200			{object}	models.SimpleHostnameResponse	"Hostname"
+// @Security		Bearer
+// @Tags			Manipulate existing Hostnames
+// @Router			/{category}/{hostname} [delete]
+func DeleteHostname(c *gin.Context) {
+	category := c.Param("category")
+	hostname := c.Param("hostname")
+
+	err := db.DeleteHostname(category, hostname)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+	response := models.SimpleHostnameResponse{Hostname: hostname}
+	c.JSON(http.StatusOK, response)
+}
+
+func CreateOrUpdateHostname(c *gin.Context, isUpdate bool) {
+	category := c.Param("category")
+	var oldHostname string
+	if isUpdate {
+		oldHostname = c.Param("oldhostname")
+	}
+
+	var params map[string]interface{}
+	if err := c.BindJSON(&params); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid parameters"})
+		return
+	}
+
+	rule, err := getHostnameRuleByCategory(category)
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	var hostname string
+	if isUpdate {
+		hostname, err = rule.Update(category, oldHostname, params)
+	} else {
+		hostname, err = rule.Insert(category, params)
+	}
+
+	if err != nil {
+		if isUpdate && strings.Contains(err.Error(), "does not exist") {
+			c.JSON(http.StatusNotFound, gin.H{"error": err.Error()})
+		} else {
+			c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		}
+		return
+	}
+
+	response := models.SimpleHostnameResponse{Hostname: hostname}
+	c.JSON(http.StatusOK, response)
+}

api/rule_handlers.go

@@ -0,0 +1,38 @@
+// Copyright 2024 Florian Beisel
+//
+// 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 api
+
+import (
+	"errors"
+	"net/http"
+
+	"git.beisel.it/florian/hostname-service/rules"
+	"github.com/gin-gonic/gin"
+)
+
+func ListAvailableRules(c *gin.Context) {
+	descriptions := make(map[string]string)
+	for category, descriptor := range rules.RulesRegistry {
+		descriptions[category] = descriptor.Description
+	}
+	c.JSON(http.StatusOK, descriptions)
+}
+
+func getHostnameRuleByCategory(category string) (rules.HostnameRule, error) {
+	if descriptor, exists := rules.RulesRegistry[category]; exists {
+		return descriptor.Factory(), nil
+	}
+	return nil, errors.New("unknown category")
+}

auth/auth.go

@@ -1,3 +1,17 @@
+// Copyright 2024 Florian Beisel
+//
+// 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 auth
 
 import (
@@ -8,14 +22,15 @@ import (
 )
 
 func GenerateToken(username string) (string, error) {
+	jwtKeyBytes := []byte(config.GlobalConfig.JwtKey)
+
 	expirationTime := time.Now().Add(1 * time.Hour)
 	claims := &jwt.StandardClaims{
 		Subject:   username,
 		ExpiresAt: expirationTime.Unix(),
 	}
-
 	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
-	tokenString, err := token.SignedString(config.GlobalConfig.JwtKey)
+	tokenString, err := token.SignedString(jwtKeyBytes)
 
 	return tokenString, err
 }

auth/handlers.go

@@ -1,7 +1,22 @@
+// Copyright 2024 Florian Beisel
+//
+// 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 auth
 
 import (
 	"database/sql"
+	"log"
 	"net/http"
 
 	"git.beisel.it/florian/hostname-service/db"
@@ -58,6 +73,7 @@ func LoginHandler(c *gin.Context) {
 	token, err := GenerateToken(storedCreds.Username)
 	if err != nil {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to generate token"})
+		log.Printf("Error generating token %v", err)
 		return
 	}
 

config/config.go

@@ -1,10 +1,23 @@
+// Copyright 2024 Florian Beisel
+//
+// 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 config
 
 import (
 	"encoding/json"
 	"errors"
 	"flag"
-	"io/ioutil"
 	"os"
 	"reflect"
 	"strings"
@@ -45,7 +58,7 @@ func LoadConfig() error {
 	loadConfigFromEnvOrSecrets(GlobalConfig)
 
 	// Check if the configuration has been loaded successfully
-	if GlobalConfig.JwtKey == "" || GlobalConfig.DatabaseFile == "" {
+	if GlobalConfig.DatabaseFile == "" {
 		// Add more checks as necessary for other required config fields
 		return errors.New("failed to load configuration from any source")
 	}
@@ -54,7 +67,7 @@ func LoadConfig() error {
 }
 
 func loadConfigFromFile(filePath string, config *AppConfig) error {
-	fileData, err := ioutil.ReadFile(filePath)
+	fileData, err := os.ReadFile(filePath)
 	if err != nil {
 		return err
 	}
@@ -81,7 +94,7 @@ func loadConfigFromEnvOrSecrets(config *AppConfig) {
 		// Handling Docker secrets (file-based secrets)
 		secretFileEnvVar := envVar + "_FILE"
 		if secretFilePath, exists := os.LookupEnv(secretFileEnvVar); exists {
-			if secretValue, err := ioutil.ReadFile(secretFilePath); err == nil {
+			if secretValue, err := os.ReadFile(secretFilePath); err == nil {
 				val.Field(i).SetString(string(secretValue))
 			}
 		}

db/db.go

@@ -1,3 +1,17 @@
+// Copyright 2024 Florian Beisel
+//
+// 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 db
 
 import (

docs/docs.go

@@ -15,8 +15,8 @@ const docTemplate = `{
             "email": "florian@beisel.it"
         },
         "license": {
-            "name": "MIT",
+            "name": "Apache 2.0",
-            "url": "http://git.beisel.it/florian/hostname-service/"
+            "url": "http://www.apache.org/licenses/LICENSE-2.0.html"
         },
         "version": "{{.Version}}"
     },
@@ -25,6 +25,11 @@ const docTemplate = `{
     "paths": {
         "/api/notebook": {
             "put": {
+                "security": [
+                    {
+                        "Bearer": []
+                    }
+                ],
                 "description": "Generates a new hostname for a notebook based on dynamic rules.",
                 "consumes": [
                     "application/json"
@@ -33,7 +38,7 @@ const docTemplate = `{
                     "application/json"
                 ],
                 "tags": [
-                    "Generating Hostnames"
+                    "Manipulate existing Hostnames"
                 ],
                 "summary": "Update hostname for category \"notebook\"",
                 "operationId": "update-notebook-hostname",
@@ -58,6 +63,11 @@ const docTemplate = `{
                 }
             },
             "post": {
+                "security": [
+                    {
+                        "Bearer": []
+                    }
+                ],
                 "description": "Generates a hostname for a notebook based on dynamic rules.",
                 "consumes": [
                     "application/json"
@@ -91,6 +101,110 @@ const docTemplate = `{
                 }
             }
         },
+        "/api/rules": {
+            "get": {
+                "description": "Get a list of all available hostname generation rules.",
+                "consumes": [
+                    "application/json"
+                ],
+                "produces": [
+                    "application/json"
+                ],
+                "tags": [
+                    "Rules"
+                ],
+                "summary": "List Available Rules",
+                "responses": {
+                    "200": {
+                        "description": "List of available rules with descriptions",
+                        "schema": {
+                            "type": "object",
+                            "additionalProperties": {
+                                "type": "string"
+                            }
+                        }
+                    }
+                }
+            }
+        },
+        "/api/server": {
+            "put": {
+                "security": [
+                    {
+                        "Bearer": []
+                    }
+                ],
+                "description": "Generates a new hostname for a notebook based on dynamic rules.",
+                "consumes": [
+                    "application/json"
+                ],
+                "produces": [
+                    "application/json"
+                ],
+                "tags": [
+                    "Manipulate existing Hostnames"
+                ],
+                "summary": "Update hostname for category \"notebook\"",
+                "operationId": "update-server-hostname",
+                "parameters": [
+                    {
+                        "description": "Input data to generate hostname",
+                        "name": "body",
+                        "in": "body",
+                        "required": true,
+                        "schema": {
+                            "$ref": "#/definitions/rules.ServerRuleInput"
+                        }
+                    }
+                ],
+                "responses": {
+                    "200": {
+                        "description": "Hostname",
+                        "schema": {
+                            "$ref": "#/definitions/models.SimpleHostnameResponse"
+                        }
+                    }
+                }
+            },
+            "post": {
+                "security": [
+                    {
+                        "Bearer": []
+                    }
+                ],
+                "description": "Generates a hostname for a notebook based on dynamic rules.",
+                "consumes": [
+                    "application/json"
+                ],
+                "produces": [
+                    "application/json"
+                ],
+                "tags": [
+                    "Generating Hostnames"
+                ],
+                "summary": "Generate hostname for category \"notebook\"",
+                "operationId": "insert-server-hostname",
+                "parameters": [
+                    {
+                        "description": "Input data to generate hostname",
+                        "name": "body",
+                        "in": "body",
+                        "required": true,
+                        "schema": {
+                            "$ref": "#/definitions/rules.ServerRuleInput"
+                        }
+                    }
+                ],
+                "responses": {
+                    "200": {
+                        "description": "Hostname",
+                        "schema": {
+                            "$ref": "#/definitions/models.SimpleHostnameResponse"
+                        }
+                    }
+                }
+            }
+        },
         "/hello": {
             "get": {
                 "security": [
@@ -374,6 +488,29 @@ const docTemplate = `{
                     "type": "string"
                 }
             }
+        },
+        "rules.ServerRuleInput": {
+            "type": "object",
+            "properties": {
+                "Description": {
+                    "type": "string"
+                },
+                "ILO": {
+                    "type": "string"
+                },
+                "IP": {
+                    "type": "string"
+                },
+                "Location": {
+                    "type": "string"
+                },
+                "OrgUnit": {
+                    "type": "string"
+                },
+                "Responsible": {
+                    "type": "string"
+                }
+            }
         }
     },
     "securityDefinitions": {

docs/swagger.json

@@ -9,8 +9,8 @@
             "email": "florian@beisel.it"
         },
         "license": {
-            "name": "MIT",
+            "name": "Apache 2.0",
-            "url": "http://git.beisel.it/florian/hostname-service/"
+            "url": "http://www.apache.org/licenses/LICENSE-2.0.html"
         },
         "version": "1"
     },
@@ -19,6 +19,11 @@
     "paths": {
         "/api/notebook": {
             "put": {
+                "security": [
+                    {
+                        "Bearer": []
+                    }
+                ],
                 "description": "Generates a new hostname for a notebook based on dynamic rules.",
                 "consumes": [
                     "application/json"
@@ -27,7 +32,7 @@
                     "application/json"
                 ],
                 "tags": [
-                    "Generating Hostnames"
+                    "Manipulate existing Hostnames"
                 ],
                 "summary": "Update hostname for category \"notebook\"",
                 "operationId": "update-notebook-hostname",
@@ -52,6 +57,11 @@
                 }
             },
             "post": {
+                "security": [
+                    {
+                        "Bearer": []
+                    }
+                ],
                 "description": "Generates a hostname for a notebook based on dynamic rules.",
                 "consumes": [
                     "application/json"
@@ -85,6 +95,110 @@
                 }
             }
         },
+        "/api/rules": {
+            "get": {
+                "description": "Get a list of all available hostname generation rules.",
+                "consumes": [
+                    "application/json"
+                ],
+                "produces": [
+                    "application/json"
+                ],
+                "tags": [
+                    "Rules"
+                ],
+                "summary": "List Available Rules",
+                "responses": {
+                    "200": {
+                        "description": "List of available rules with descriptions",
+                        "schema": {
+                            "type": "object",
+                            "additionalProperties": {
+                                "type": "string"
+                            }
+                        }
+                    }
+                }
+            }
+        },
+        "/api/server": {
+            "put": {
+                "security": [
+                    {
+                        "Bearer": []
+                    }
+                ],
+                "description": "Generates a new hostname for a notebook based on dynamic rules.",
+                "consumes": [
+                    "application/json"
+                ],
+                "produces": [
+                    "application/json"
+                ],
+                "tags": [
+                    "Manipulate existing Hostnames"
+                ],
+                "summary": "Update hostname for category \"notebook\"",
+                "operationId": "update-server-hostname",
+                "parameters": [
+                    {
+                        "description": "Input data to generate hostname",
+                        "name": "body",
+                        "in": "body",
+                        "required": true,
+                        "schema": {
+                            "$ref": "#/definitions/rules.ServerRuleInput"
+                        }
+                    }
+                ],
+                "responses": {
+                    "200": {
+                        "description": "Hostname",
+                        "schema": {
+                            "$ref": "#/definitions/models.SimpleHostnameResponse"
+                        }
+                    }
+                }
+            },
+            "post": {
+                "security": [
+                    {
+                        "Bearer": []
+                    }
+                ],
+                "description": "Generates a hostname for a notebook based on dynamic rules.",
+                "consumes": [
+                    "application/json"
+                ],
+                "produces": [
+                    "application/json"
+                ],
+                "tags": [
+                    "Generating Hostnames"
+                ],
+                "summary": "Generate hostname for category \"notebook\"",
+                "operationId": "insert-server-hostname",
+                "parameters": [
+                    {
+                        "description": "Input data to generate hostname",
+                        "name": "body",
+                        "in": "body",
+                        "required": true,
+                        "schema": {
+                            "$ref": "#/definitions/rules.ServerRuleInput"
+                        }
+                    }
+                ],
+                "responses": {
+                    "200": {
+                        "description": "Hostname",
+                        "schema": {
+                            "$ref": "#/definitions/models.SimpleHostnameResponse"
+                        }
+                    }
+                }
+            }
+        },
         "/hello": {
             "get": {
                 "security": [
@@ -368,6 +482,29 @@
                     "type": "string"
                 }
             }
+        },
+        "rules.ServerRuleInput": {
+            "type": "object",
+            "properties": {
+                "Description": {
+                    "type": "string"
+                },
+                "ILO": {
+                    "type": "string"
+                },
+                "IP": {
+                    "type": "string"
+                },
+                "Location": {
+                    "type": "string"
+                },
+                "OrgUnit": {
+                    "type": "string"
+                },
+                "Responsible": {
+                    "type": "string"
+                }
+            }
         }
     },
     "securityDefinitions": {

docs/swagger.yaml

@@ -58,6 +58,21 @@ definitions:
       OrgUnit:
         type: string
     type: object
+  rules.ServerRuleInput:
+    properties:
+      Description:
+        type: string
+      ILO:
+        type: string
+      IP:
+        type: string
+      Location:
+        type: string
+      OrgUnit:
+        type: string
+      Responsible:
+        type: string
+    type: object
 host: localhost:8080
 info:
   contact:
@@ -66,8 +81,8 @@ info:
     url: http://git.beisel.it/florian
   description: This is a sample server for a hostname service.
   license:
-    name: MIT
+    name: Apache 2.0
-    url: http://git.beisel.it/florian/hostname-service/
+    url: http://www.apache.org/licenses/LICENSE-2.0.html
   title: Hostname Service API
   version: "1"
 paths:
@@ -168,6 +183,8 @@ paths:
           description: Hostname
           schema:
             $ref: '#/definitions/models.SimpleHostnameResponse'
+      security:
+      - Bearer: []
       summary: Generate hostname for category "notebook"
       tags:
       - Generating Hostnames
@@ -190,9 +207,77 @@ paths:
           description: Hostname
           schema:
             $ref: '#/definitions/models.SimpleHostnameResponse'
+      security:
+      - Bearer: []
       summary: Update hostname for category "notebook"
       tags:
+      - Manipulate existing Hostnames
+  /api/rules:
+    get:
+      consumes:
+      - application/json
+      description: Get a list of all available hostname generation rules.
+      produces:
+      - application/json
+      responses:
+        "200":
+          description: List of available rules with descriptions
+          schema:
+            additionalProperties:
+              type: string
+            type: object
+      summary: List Available Rules
+      tags:
+      - Rules
+  /api/server:
+    post:
+      consumes:
+      - application/json
+      description: Generates a hostname for a notebook based on dynamic rules.
+      operationId: insert-server-hostname
+      parameters:
+      - description: Input data to generate hostname
+        in: body
+        name: body
+        required: true
+        schema:
+          $ref: '#/definitions/rules.ServerRuleInput'
+      produces:
+      - application/json
+      responses:
+        "200":
+          description: Hostname
+          schema:
+            $ref: '#/definitions/models.SimpleHostnameResponse'
+      security:
+      - Bearer: []
+      summary: Generate hostname for category "notebook"
+      tags:
       - Generating Hostnames
+    put:
+      consumes:
+      - application/json
+      description: Generates a new hostname for a notebook based on dynamic rules.
+      operationId: update-server-hostname
+      parameters:
+      - description: Input data to generate hostname
+        in: body
+        name: body
+        required: true
+        schema:
+          $ref: '#/definitions/rules.ServerRuleInput'
+      produces:
+      - application/json
+      responses:
+        "200":
+          description: Hostname
+          schema:
+            $ref: '#/definitions/models.SimpleHostnameResponse'
+      security:
+      - Bearer: []
+      summary: Update hostname for category "notebook"
+      tags:
+      - Manipulate existing Hostnames
   /hello:
     get:
       consumes:

examples/notebook_cli.ps1

@@ -1,3 +1,17 @@
+# Copyright 2024 Florian Beisel
+# 
+# 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.
+
 # Define API URLs
 $loginUrl = "http://localhost:8080/api/v1/login"
 $generateNotebookUrl = "http://localhost:8080/api/v1/notebook"

main.go

@@ -19,15 +19,9 @@ package main
 import (
 	"log"
 
-	"git.beisel.it/florian/hostname-service/api"
-	"git.beisel.it/florian/hostname-service/auth"
 	"git.beisel.it/florian/hostname-service/config"
 	"git.beisel.it/florian/hostname-service/db"
-	"git.beisel.it/florian/hostname-service/docs"
+	"git.beisel.it/florian/hostname-service/router"
-	"git.beisel.it/florian/hostname-service/middleware"
-	"github.com/gin-gonic/gin"
-	swaggerFiles "github.com/swaggo/files"
-	ginSwagger "github.com/swaggo/gin-swagger"
 )
 
 //	@title			Hostname Service API
@@ -54,48 +48,9 @@ func main() {
 		log.Fatalf("Failed to load configuration: %v", err)
 	}
 
-	gin.SetMode(gin.DebugMode)
-
 	db.Init(config.GlobalConfig.DatabaseFile)
 
-	router := gin.Default()
+	router := router.New()
-
-	docs.SwaggerInfo.Host = "localhost:8080"
-	docs.SwaggerInfo.BasePath = "/api/v1"
-
-	v1 := router.Group("/api/v1")
-	{
-		// public routes
-		v1.POST("/login", auth.LoginHandler)
-
-		// Protected Routes
-		authenticated := v1.Group("/").Use(middleware.Authenticate())
-		{
-			authenticated.GET("/hello", api.Helloworld)
-
-			// Create Host
-			authenticated.POST("/:category", func(c *gin.Context) {
-				api.CreateOrUpdateHostname(c, false)
-			})
-
-			// Get Host Details
-			authenticated.GET("/:category/:hostname", api.GetHostnameByCategoryAndName)
-
-			// Update Host
-			authenticated.PUT("/:category/:oldhostname", func(c *gin.Context) {
-				api.CreateOrUpdateHostname(c, true)
-			})
-
-			// Delete Host
-			authenticated.DELETE("/:category/:hostname", api.DeleteHostname)
-
-			// List Hostnames
-			authenticated.GET("/:category", api.ListHostnamesByCategory)
-		}
-	}
-
-	// Swagger endpoint
-	router.GET("/swagger/*any", ginSwagger.WrapHandler(swaggerFiles.Handler))
-
 	router.Run(":8080")
+
 }

middleware/middleware.go

@@ -23,7 +23,8 @@ func Authenticate() gin.HandlerFunc {
 			if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
 				return nil, fmt.Errorf("unexpected signing method")
 			}
-			return config.GlobalConfig.JwtKey, nil
+			jwtKeyBytes := []byte(config.GlobalConfig.JwtKey)
+			return jwtKeyBytes, nil
 		})
 
 		if err != nil {

models/error.go

@@ -1,3 +1,17 @@
+// Copyright 2024 Florian Beisel
+//
+// 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 models
 
 type ErrorResponse struct {

models/hostname.go

@@ -1,3 +1,17 @@
+// Copyright 2024 Florian Beisel
+//
+// 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 models
 
 import "time"

models/login.go

@@ -1,3 +1,17 @@
+// Copyright 2024 Florian Beisel
+//
+// 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 models
 
 // User Credentials Model

models/user.go

@@ -1,3 +1,17 @@
+// Copyright 2024 Florian Beisel
+//
+// 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 models
 
 // User Model

router/router.go

@@ -0,0 +1,73 @@
+// Copyright 2024 Florian Beisel
+//
+// 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 router
+
+import (
+	"git.beisel.it/florian/hostname-service/api"
+	"git.beisel.it/florian/hostname-service/auth"
+	"git.beisel.it/florian/hostname-service/docs"
+	"git.beisel.it/florian/hostname-service/middleware"
+	"github.com/gin-gonic/gin"
+	swaggerFiles "github.com/swaggo/files"
+	ginSwagger "github.com/swaggo/gin-swagger"
+	// ... other necessary imports ...
+)
+
+func New() *gin.Engine {
+	gin.SetMode(gin.DebugMode)
+	router := gin.Default()
+
+	docs.SwaggerInfo.Host = "localhost:8080"
+	docs.SwaggerInfo.BasePath = "/api/v1"
+
+	v1 := router.Group("/api/v1")
+	{
+		// public routes
+		v1.POST("/login", auth.LoginHandler)
+
+		// Protected Routes
+		authenticated := v1.Group("/").Use(middleware.Authenticate())
+		{
+			authenticated.GET("/hello", api.Helloworld)
+
+			// Create Host
+			authenticated.POST("/:category", func(c *gin.Context) {
+				api.CreateOrUpdateHostname(c, false)
+			})
+
+			// Get Host Details
+			authenticated.GET("/:category/:hostname", api.GetHostnameByCategoryAndName)
+
+			// Update Host
+			authenticated.PUT("/:category/:oldhostname", func(c *gin.Context) {
+				api.CreateOrUpdateHostname(c, true)
+			})
+
+			// Delete Host
+			authenticated.DELETE("/:category/:hostname", api.DeleteHostname)
+
+			// List Hostnames
+			authenticated.GET("/:category", api.ListHostnamesByCategory)
+
+			// List available Rules
+			authenticated.GET("/api/rules", api.ListAvailableRules)
+		}
+	}
+
+	// Swagger endpoint
+	router.GET("/swagger/*any", ginSwagger.WrapHandler(swaggerFiles.Handler))
+
+	return router
+}

rules/interface.go

@@ -9,41 +9,53 @@ import (
 
 type HostnameRule interface {
 	Generate(params map[string]interface{}) (string, []byte, error)
-	Insert(category string, hostname string, paramsJSON []byte) error
+	Insert(category string, params map[string]interface{}) (string, error)
-	Update(category string, oldhostname string, hostname string, paramsJSON []byte) error
+	Update(category string, oldhostname string, params map[string]interface{}) (string, error)
 }
 
 type BaseRule struct{}
 
-func (br *BaseRule) baseInsert(category string, hostname string, paramsJSON []byte) error {
+func (br *BaseRule) baseInsert(rule HostnameRule, category string, params map[string]interface{}) (string, error) {
+	// Generate the hostname using the passed rule's Generate method
+	hostname, paramsJSON, err := rule.Generate(params)
+	if err != nil {
+		return "", err
+	}
+
 	exists, err := db.HostnameExists(category, hostname)
 	if err != nil {
-		return fmt.Errorf("error checking existence of hostname: %v", err.Error())
+		log.Printf("error checking existence of hostname: %v", err)
+		return "", err
 	}
 	if exists {
-		return fmt.Errorf("hostname %s does not exist in category %s", hostname, category)
+		log.Printf("hostname %s does not exist in category %s", hostname, category)
+		return "", fmt.Errorf("hostname-exists")
 	}
+
+	// Insert the hostname into the database
 	err = db.InsertHostname(category, hostname, paramsJSON)
 	if err != nil {
 		log.Printf("Error inserting hostname into DB: %v", err)
-		return err
+		return "", err
-	}
-	return nil
 	}
 
-func (br *BaseRule) baseUpdate(category string, oldhostname string, hostname string, paramsJSON []byte) error {
+	return hostname, nil
-	exists, err := db.HostnameExists(category, oldhostname)
-	if err != nil {
-		return fmt.Errorf("error checking existence of hostname: %v", err.Error())
-	}
-	if !exists {
-		return fmt.Errorf("hostname %s does not exist in category %s", oldhostname, category)
 }
 
-	err = db.UpdateHostname(category, oldhostname, hostname, paramsJSON)
+// baseUpdate method for BaseRule
+func (br *BaseRule) baseUpdate(rule HostnameRule, category string, oldhostname string, params map[string]interface{}) (string, error) {
+	// Generate the new hostname using the passed rule's Generate method
+	newHostname, paramsJSON, err := rule.Generate(params)
 	if err != nil {
-		log.Printf("Error inserting hostname into DB: %v", err)
+		return "", err
-		return err
 	}
-	return nil
+
+	// Update the hostname in the database
+	err = db.UpdateHostname(category, oldhostname, newHostname, paramsJSON)
+	if err != nil {
+		log.Printf("Error updating hostname in DB: %v", err)
+		return "", err
+	}
+
+	return newHostname, nil
 }

rules/notebook.go

@@ -75,8 +75,11 @@ func (nr *NotebookRule) Generate(params map[string]interface{}) (string, []byte,
 // @Param			body	body		NotebookRuleInput	true	"Input data to generate hostname"
 // @Success		200			{object}	models.SimpleHostnameResponse	"Hostname"
 // @Router			/api/notebook [post]
-func (nr *NotebookRule) Insert(category string, hostname string, paramsJSON []byte) error {
+// @Security		Bearer
-	return nr.baseInsert(category, hostname, paramsJSON)
+func (nr *NotebookRule) Insert(category string, params map[string]interface{}) (string, error) {
+	// Generate the hostname
+
+	return nr.baseInsert(nr, category, params)
 }
 
 // @Summary		Update hostname for category "notebook"
@@ -84,10 +87,11 @@ func (nr *NotebookRule) Insert(category string, hostname string, paramsJSON []by
 // @ID				update-notebook-hostname
 // @Accept			json
 // @Produce		json
-// @Tags			Generating Hostnames
+// @Tags			Manipulate existing Hostnames
 // @Param			body	body		NotebookRuleInput	true	"Input data to generate hostname"
 // @Success		200			{object}	models.SimpleHostnameResponse	"Hostname"
 // @Router			/api/notebook [put]
-func (nr *NotebookRule) Update(category string, oldhostname string, hostname string, paramsJSON []byte) error {
+// @Security		Bearer
-	return nr.baseUpdate(category, oldhostname, hostname, paramsJSON)
+func (nr *NotebookRule) Update(category string, oldhostname string, params map[string]interface{}) (string, error) {
+	return nr.baseUpdate(nr, category, oldhostname, params)
 }

rules/registry.go

@@ -0,0 +1,34 @@
+// Copyright 2024 Florian Beisel
+//
+// 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 rules
+
+type RuleFactoryFunc func() HostnameRule
+
+type RuleDescriptor struct {
+	Description string
+	Factory     RuleFactoryFunc
+}
+
+var RulesRegistry = map[string]RuleDescriptor{
+	"notebook": {
+		Description: "Generates hostnames for notebooks.",
+		Factory:     func() HostnameRule { return &NotebookRule{} },
+	},
+	"server": {
+		Description: "Generates hostnames for servers.",
+		Factory:     func() HostnameRule { return &ServerRule{} },
+	},
+	// ... other rules ...
+}

rules/server.go

@@ -0,0 +1,139 @@
+// Copyright 2024 Florian Beisel
+//
+// 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 rules
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"log"
+
+	"git.beisel.it/florian/hostname-service/db"
+)
+
+type ServerRule struct {
+	BaseRule
+	OrgUnit     string `json:"OrgUnit"`
+	Location    string `json:"Location"`
+	Number      int    `json:"Number"`
+	Description string `json:"Description"`
+	IP          string `json:"IP"`
+	ILO         string `json:"ILO"`
+	Responsible string `json:"Responsible"`
+}
+
+type ServerRuleInput struct {
+	OrgUnit     string `json:"OrgUnit"`
+	Location    string `json:"Location"`
+	Description string `json:"Description"`
+	IP          string `json:"IP"`
+	ILO         string `json:"ILO"`
+	Responsible string `json:"Responsible"`
+}
+
+// Ensure that ServerRule implements HostnameRule interface
+var _ HostnameRule = &ServerRule{}
+
+func (sr *ServerRule) Generate(params map[string]interface{}) (string, []byte, error) {
+	var ok bool
+
+	// Get the OrgUnit
+	if sr.OrgUnit, ok = params["OrgUnit"].(string); !ok {
+		return "", nil, errors.New("OrgUnit parameter is required and must be a string")
+	}
+
+	// Get the Location
+	if sr.Location, ok = params["Location"].(string); !ok {
+		return "", nil, errors.New("location parameter is required and must be a string")
+	}
+
+	// Get the Description
+	if sr.Description, ok = params["Description"].(string); !ok {
+		return "", nil, errors.New("parameter Description is required and must be a string")
+	}
+
+	// Get the IP
+	if sr.IP, ok = params["IP"].(string); !ok {
+		return "", nil, errors.New("IP parameter is required and must be a string")
+	}
+
+	// Get the ILO IP
+	if sr.ILO, ok = params["ILO"].(string); !ok {
+		return "", nil, errors.New("ILO parameter is required and must be a string")
+	}
+
+	// Get the Responsible
+	if sr.Responsible, ok = params["Responsible"].(string); !ok {
+		return "", nil, errors.New("parameter Responsible parameter is required and must be a string")
+	}
+
+	// Get last used number from the database and increment it
+	maxNumber, err := db.GetMaxNumberForCategory("server")
+	if err != nil {
+		return "", nil, err
+	}
+
+	newNumber := 1
+	if maxNumber >= 1 {
+		newNumber = int(maxNumber) + 1
+	}
+
+	sr.Number = newNumber
+
+	// Generate the hostname (orgUnit + Location + "NB" + Number)
+	hostname := fmt.Sprintf("%s%sSV%04d", sr.OrgUnit, sr.Location, sr.Number)
+
+	// Store the generated hostname in the database
+	// JSON parameters can be stored by marshalling the params map
+	paramsJSON, err := json.Marshal(sr)
+	if err != nil {
+		log.Printf("Error converting Category Struct to JSON: %v", err)
+		return "", nil, err
+	}
+
+	// Return the generated hostname and marshaled parameters
+	return hostname, paramsJSON, nil
+
+}
+
+// @Summary		Generate hostname for category "notebook"
+// @Description	Generates a hostname for a notebook based on dynamic rules.
+// @ID				insert-server-hostname
+// @Accept			json
+// @Produce		json
+// @Tags			Generating Hostnames
+// @Param			body	body		ServerRuleInput	true	"Input data to generate hostname"
+// @Success		200			{object}	models.SimpleHostnameResponse	"Hostname"
+// @Router			/api/server [post]
+// @Security		Bearer
+func (nr *ServerRule) Insert(category string, params map[string]interface{}) (string, error) {
+	// Generate the hostname
+
+	return nr.baseInsert(nr, category, params)
+}
+
+// @Summary		Update hostname for category "notebook"
+// @Description	Generates a new hostname for a notebook based on dynamic rules.
+// @ID				update-server-hostname
+// @Accept			json
+// @Produce		json
+// @Tags			Manipulate existing Hostnames
+// @Param			body	body		ServerRuleInput	true	"Input data to generate hostname"
+// @Success		200			{object}	models.SimpleHostnameResponse	"Hostname"
+// @Router			/api/server [put]
+// @Security		Bearer
+func (nr *ServerRule) Update(category string, oldhostname string, params map[string]interface{}) (string, error) {
+	return nr.baseUpdate(nr, category, oldhostname, params)
+}