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-rw-r--r--Makefile3
-rw-r--r--README.md54
-rw-r--r--config.go8
-rw-r--r--config/debug.json5
-rw-r--r--config/default.json5
-rw-r--r--data/storage/recipes/0/text3
-rw-r--r--data/templates/recipe.html2
-rw-r--r--data/templates/recipe_edit.html2
-rw-r--r--database.go126
-rw-r--r--go.mod5
-rw-r--r--go.sum2
-rw-r--r--handler.go233
-rw-r--r--main.go19
-rw-r--r--sql/0001_migration.sql18
-rw-r--r--sql/0002_migration.sql25
15 files changed, 107 insertions, 403 deletions
diff --git a/Makefile b/Makefile
index 1d1e261..4be69c1 100644
--- a/Makefile
+++ b/Makefile
@@ -21,9 +21,6 @@ install: all
install -Dm 644 data/templates/index.html $(DESTDIR)$(PREFIX)/share/ceres/templates/index.html
install -Dm 644 data/templates/recipe.html $(DESTDIR)$(PREFIX)/share/ceres/templates/recipe.html
-
- install -Dm 644 sql/0001_migration.sql $(DESTDIR)$(PREFIX)/share/ceres/migrations/0001_migration.sql
- install -Dm 644 sql/0002_migration.sql $(DESTDIR)$(PREFIX)/share/ceres/migrations/0002_migration.sql
debug:
go run *.go -c config/debug.json
diff --git a/README.md b/README.md
index b2b3584..5fd507d 100644
--- a/README.md
+++ b/README.md
@@ -19,54 +19,6 @@ Please install the following dependencies to build and run Ceres:
- [Git][5]
- [Make][6]
- [Go][7]
-- [MariaDB][3]
-
-
-## Setup Ceres database
-
-Ceres supports only the [MariaDB][3] SQL implementation which is available on a
-lot of Linux distributions.
-
-Database creation should be easy so please install MariaDB on your system and
-then just run the first migration script with root user rights like this:
-
-```
- mariadb -u root < sql/0001_migration.sql
-```
-
-After database creation you have to also grant access to the database for a
-Linux user. See the next section for details.
-
-
-## Grant access to Ceres database for a Linux user
-
-If you want to use Ceres for production it is recommended to add a Linux user
-for this purpose like this:
-
-```
- useradd ceres
-```
-
-For development you can just go on with your default Linux username. First
-start an interactive MariaDB shell like this:
-
-```
- mariadb -u root
-```
-
-And then add a corresponding MariaDB user for the selected Linux user and set
-corresponding access rights (substitute <user> with the selected username):
-
-```
- CREATE USER IF NOT EXISTS '<user>'@'localhost' IDENTIFIED VIA unix_socket;
- GRANT ALL PRIVILEGES on ceres.* to '<user>'@'localhost';
- FLUSH PRIVILEGES;
-```
-
-The `unix_socket` authentication method ensures that the corresponding user
-does not need to provide a password.
-
-Finally you can quit the MariaDB shell with CTRL + d.
## Build and run Ceres
@@ -74,9 +26,8 @@ Finally you can quit the MariaDB shell with CTRL + d.
If you just cloned the repository it is important to initialize Git submodules
to add dependencies via `git submodule update --init`.
-Then it is time to build and run Ceres for the first time! If your database is
-correctly configured and your current user has access rights, it is very simple
-to run the server in debug mode:
+Then it is time to build and run Ceres for the first time in debug mode like
+this:
```
make debug
@@ -118,7 +69,6 @@ executable at boot.
[1]: https://xengineering.eu/git/ceres
[2]: ./CHANGELOG.md
-[3]: https://mariadb.com/
[4]: https://www.gnu.org/software/coreutils/
[5]: https://git-scm.com/
[6]: https://www.gnu.org/software/make/
diff --git a/config.go b/config.go
index 64b2bfb..46685d2 100644
--- a/config.go
+++ b/config.go
@@ -12,7 +12,6 @@ import (
type RuntimeConfig struct {
Path string
Http HttpConfig `json:"http"`
- Database DatabaseConfig `json:"database"`
}
type HttpConfig struct {
@@ -22,13 +21,6 @@ type HttpConfig struct {
Templates string `json:"templates"`
}
-type DatabaseConfig struct {
- Socket string `json:"socket"`
- User string `json:"user"`
- Database string `json:"database"`
- Migrations string `json:"migrations"`
-}
-
func GetRuntimeConfig() RuntimeConfig {
config := RuntimeConfig{}
diff --git a/config/debug.json b/config/debug.json
index b3f5cbd..8333e1e 100644
--- a/config/debug.json
+++ b/config/debug.json
@@ -4,10 +4,5 @@
"bind_port":"8080",
"static":"./data/static",
"templates":"./data/templates"
- },
- "database":{
- "socket":"/run/mysqld/mysqld.sock",
- "database":"ceres",
- "migrations":"./sql"
}
}
diff --git a/config/default.json b/config/default.json
index 33ff4a4..0fbcf09 100644
--- a/config/default.json
+++ b/config/default.json
@@ -4,10 +4,5 @@
"bind_port":"8080",
"static":"/usr/share/ceres/static",
"templates":"/usr/share/ceres/templates"
- },
- "database":{
- "socket":"/run/mysqld/mysqld.sock",
- "database":"ceres",
- "migrations":"/usr/share/ceres/migrations"
}
}
diff --git a/data/storage/recipes/0/text b/data/storage/recipes/0/text
index 208828a..3eb81ce 100644
--- a/data/storage/recipes/0/text
+++ b/data/storage/recipes/0/text
@@ -2,5 +2,6 @@
Important steps:
-- cook it
+- cook it smoothly
+- serve it
- eat it
diff --git a/data/templates/recipe.html b/data/templates/recipe.html
index b1fc550..972a8bf 100644
--- a/data/templates/recipe.html
+++ b/data/templates/recipe.html
@@ -15,7 +15,7 @@
</header>
<main>
- {{.RenderedDescriptionMarkdown}}
+ {{.Html}}
<a href="./recipe/edit?id={{.Id}}"><button>edit</button></a>
{{ template "footer.html" }}
diff --git a/data/templates/recipe_edit.html b/data/templates/recipe_edit.html
index 4860c6a..9069d4a 100644
--- a/data/templates/recipe_edit.html
+++ b/data/templates/recipe_edit.html
@@ -15,7 +15,7 @@
<main>
<p>Recipe ID: {{.Id}}</p>
- <pre contenteditable="true" id="editor"><code>{{.DescriptionMarkdown}}</code></pre>
+ <pre contenteditable="true" id="editor"><code>{{.Text}}</code></pre>
<button onclick="save()">save</button>
<a href="/recipe?id={{.Id}}"><button>back</button></a>
<a href="/recipe/confirm-deletion?id={{.Id}}"><button style="background-color:red">delete</button></a>
diff --git a/database.go b/database.go
deleted file mode 100644
index ffc44e3..0000000
--- a/database.go
+++ /dev/null
@@ -1,126 +0,0 @@
-package main
-
-import (
- "database/sql"
- "fmt"
- "io"
- "log"
- "os"
- "os/exec"
- "os/user"
- "path/filepath"
- "strconv"
-
- _ "github.com/go-sql-driver/mysql"
-)
-
-const neededSchemaVersion int = 2
-
-func setupDatabase() *sql.DB {
-
- u, err := user.Current()
- if err != nil {
- log.Fatal(err)
- }
- target := fmt.Sprintf("%s@unix(%s)/%s", u.Username, config.Database.Socket,
- config.Database.Database)
-
- db, err := sql.Open("mysql", target)
- if err != nil {
- log.Fatal(err)
- }
-
- err = db.Ping()
- if err != nil {
- log.Fatal(err)
- }
-
- migrate(db)
-
- log.Printf("Connected to database: %s\n", target)
-
- return db
-}
-
-func migrate(db *sql.DB) {
-
- for {
- v := schemaVersion(db)
-
- if v > neededSchemaVersion {
- log.Fatalf(
- "Current database schema version is %d but newest is %d!", v,
- neededSchemaVersion)
- }
-
- if v == neededSchemaVersion {
- break
- }
-
- log.Printf("Starting database schema migration to version %d.\n", v+1)
- path := filepath.Join(config.Database.Migrations,
- fmt.Sprintf("%04d_migration.sql", v+1))
- RunSqlScript(path)
- log.Printf("Finished database schema migration to version %d.\n", v+1)
- }
-}
-
-func RunSqlScript(path string) {
-
- script, err := os.Open(path)
- if err != nil {
- log.Fatalf("Could not open SQL script '%s'!\n", path)
- }
-
- cmd := exec.Command("mariadb")
- stdin, err := cmd.StdinPipe()
- if err != nil {
- log.Fatalf("Could not open stdin of mariadb process!\n%v", err)
- }
-
- err = cmd.Start()
- if err != nil {
- log.Fatalf("Could not start mariadb process!\n%v", err)
- }
- io.Copy(stdin, script)
- stdin.Close()
-
- err = cmd.Wait()
- if err != nil {
- log.Fatalf("Failed to wait for SQL script to finish!\n%v", err)
- }
-}
-
-func schemaVersion(db *sql.DB) int {
-
- cmd := "SELECT value FROM meta WHERE (identifier='version');"
- rows, err := db.Query(cmd)
- if err != nil {
- log.Fatal(err)
- }
- defer rows.Close()
-
- rows.Next()
- var version string
- err = rows.Scan(&version)
- if err != nil {
- log.Fatal(err)
- }
-
- v, err := strconv.Atoi(version)
- if err != nil {
- log.Fatalf("Could not convert database schema version '%s' to int.\n",
- version)
- }
-
- return v
-}
-
-func dbCleanup(db *sql.DB) {
- err := db.Close()
- if err != nil {
- log.Println("Could not close database connection")
- } else {
- log.Println("Closed database connection")
- }
-}
diff --git a/go.mod b/go.mod
index 1ffe09a..245dd45 100644
--- a/go.mod
+++ b/go.mod
@@ -2,7 +2,4 @@ module xengineering.eu/ceres
go 1.16
-require (
- github.com/go-sql-driver/mysql v1.6.0
- github.com/yuin/goldmark v1.4.13
-)
+require github.com/yuin/goldmark v1.4.13
diff --git a/go.sum b/go.sum
index 12aaa30..29914fb 100644
--- a/go.sum
+++ b/go.sum
@@ -1,4 +1,2 @@
-github.com/go-sql-driver/mysql v1.6.0 h1:BCTh4TKNUYmOmMUcQ3IipzF5prigylS7XXjEkfCHuOE=
-github.com/go-sql-driver/mysql v1.6.0/go.mod h1:DCzpHaOWr8IXmIStZouvnhqoel9Qv2LBy8hT2VhHyBg=
github.com/yuin/goldmark v1.4.13 h1:fVcFKWvrslecOb/tg+Cc05dkeYx540o0FuFt3nUVDoE=
github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
diff --git a/handler.go b/handler.go
index 46e1b02..adfcd61 100644
--- a/handler.go
+++ b/handler.go
@@ -2,6 +2,7 @@ package main
import (
"bufio"
+ "os"
"bytes"
"fmt"
"io/ioutil"
@@ -9,6 +10,7 @@ import (
"path/filepath"
"regexp"
"strings"
+ "strconv"
"github.com/yuin/goldmark"
)
@@ -17,6 +19,13 @@ const (
VALID_ID_REGEX = `^[0-9]+$`
)
+type Recipe struct {
+ Id string
+ Title string
+ Text string
+ Html string
+}
+
func titleFromMd(md string) string {
scanner := bufio.NewScanner(strings.NewReader(md))
for scanner.Scan() {
@@ -31,34 +40,36 @@ func titleFromMd(md string) string {
func indexGet(w http.ResponseWriter, r *http.Request) {
- cmd := "SELECT id,description_markdown FROM recipes ORDER BY id;"
- rows, err := db.Query(cmd)
+ entries, err := os.ReadDir("data/storage/recipes")
if err != nil {
- http.Error(w, "Failed to load recipes from database.", 500)
+ http.Error(w, "Could not list recipes!", 500)
return
}
- defer rows.Close()
- type Element struct {
- Id string
- Title string
- DescriptionMarkdown string
- }
- elements := make([]Element, 0)
+ recipes := make([]Recipe, 0)
+
+ for _,v := range entries {
+ if v.IsDir() == false {
+ continue
+ }
- for rows.Next() {
- var element Element
- err := rows.Scan(&element.Id, &element.DescriptionMarkdown)
+ _, err = strconv.Atoi(v.Name())
if err != nil {
- http.Error(w, "Could not parse recipe from database request.", 500)
- return
- } else {
- element.Title = titleFromMd(element.DescriptionMarkdown)
- elements = append(elements, element)
+ continue
}
+
+ textpath := fmt.Sprintf("data/storage/recipes/%s/text", v.Name())
+ data, _ := ioutil.ReadFile(textpath)
+
+ recipes = append(recipes, Recipe{
+ v.Name(),
+ titleFromMd(string(data)),
+ string(data),
+ "",
+ })
}
- ServeTemplate(w, "index.html", elements)
+ ServeTemplate(w, "index.html", recipes)
}
func recipeGet(w http.ResponseWriter, r *http.Request) {
@@ -71,104 +82,47 @@ func recipeGet(w http.ResponseWriter, r *http.Request) {
}
idStr := ids[0]
- idRegex := regexp.MustCompile(VALID_ID_REGEX)
- if !(idRegex.MatchString(idStr)) {
- http.Error(w, "Bad 'id' URL parameter.", 400)
- return
- }
-
- cmd := fmt.Sprintf("SELECT description_markdown FROM recipes WHERE (id='%s');", idStr)
- rows, err := db.Query(cmd)
- if err != nil {
- http.Error(w, "Database returned error: "+err.Error(), 500)
- return
- }
- defer rows.Close()
-
- type Element struct {
- Id string
- Title string
- DescriptionMarkdown string
- RenderedDescriptionMarkdown string
- }
- elements := make([]Element, 0)
+ textpath := fmt.Sprintf("data/storage/recipes/%s/text", idStr)
+ data, _ := ioutil.ReadFile(textpath)
- for rows.Next() {
- var element Element
- element.Id = idStr
- err := rows.Scan(&element.DescriptionMarkdown)
- if err != nil {
- http.Error(w, "Could not parse recipe from database request.", 500)
- return
- } else {
- element.Title = titleFromMd(element.DescriptionMarkdown)
- elements = append(elements, element)
- }
- }
-
- if len(elements) != 1 {
- http.Error(w, "Expected exactly 1 recipe from database.", 500)
- return
+ recipe := Recipe{
+ idStr,
+ titleFromMd(string(data)),
+ string(data),
+ "",
}
titleRegex := regexp.MustCompile(`\# .*`)
- elements[0].DescriptionMarkdown = titleRegex.ReplaceAllString(elements[0].DescriptionMarkdown, "")
+ recipe.Text = titleRegex.ReplaceAllString(recipe.Text, "")
- // render markdown
var buf bytes.Buffer
- goldmark.Convert([]byte(elements[0].DescriptionMarkdown), &buf)
- elements[0].RenderedDescriptionMarkdown = buf.String()
+ goldmark.Convert([]byte(recipe.Text), &buf)
+ recipe.Html = buf.String()
- ServeTemplate(w, "recipe.html", elements[0])
+ ServeTemplate(w, "recipe.html", recipe)
}
func recipeEditGet(w http.ResponseWriter, r *http.Request) {
ids := r.URL.Query()["id"]
if len(ids) != 1 {
- http.Error(w, "Exactly 1 'id' URL parameter expected.", 400)
+ msg := fmt.Sprintf("Exactly 1 'id' URL parameter expected but %d provided.", len(ids))
+ http.Error(w, msg, 400)
return
}
idStr := ids[0]
- idRegex := regexp.MustCompile(VALID_ID_REGEX)
- if !(idRegex.MatchString(idStr)) {
- http.Error(w, "Bad 'id' URL parameter.", 400)
- return
- }
-
- cmd := fmt.Sprintf("SELECT description_markdown FROM recipes WHERE (id='%s');", idStr)
- rows, err := db.Query(cmd)
- if err != nil {
- http.Error(w, "Got error from database: "+err.Error(), 500)
- return
- }
- defer rows.Close()
-
- type Element struct {
- Id string
- DescriptionMarkdown string
- }
- elements := make([]Element, 0)
+ textpath := fmt.Sprintf("data/storage/recipes/%s/text", idStr)
+ data, _ := ioutil.ReadFile(textpath)
- for rows.Next() {
- var element Element
- element.Id = idStr
- err := rows.Scan(&element.DescriptionMarkdown)
- if err != nil {
- http.Error(w, "Could not parse recipe from database request.", 500)
- return
- } else {
- elements = append(elements, element)
- }
+ recipe := Recipe{
+ idStr,
+ "",
+ string(data),
+ "",
}
- if len(elements) != 1 {
- http.Error(w, "Did not get exactly one recipe from database.", 500)
- return
- }
-
- ServeTemplate(w, "recipe_edit.html", elements[0])
+ ServeTemplate(w, "recipe_edit.html", recipe)
}
func recipeEditPost(w http.ResponseWriter, r *http.Request) {
@@ -186,9 +140,17 @@ func recipeEditPost(w http.ResponseWriter, r *http.Request) {
return
}
- buffer, _ := ioutil.ReadAll(r.Body) // FIXME error handling
- body := string(buffer)
- updateRecipe(body, idStr)
+ buffer, err := ioutil.ReadAll(r.Body)
+ if err != nil {
+ http.Error(w, "Could not read request body.", 400)
+ return
+ }
+
+ textpath := fmt.Sprintf("data/storage/recipes/%s/text", idStr)
+ err = ioutil.WriteFile(textpath, buffer, 0644)
+ if err != nil {
+ http.Error(w, "Could not save new text for recipe.", 500)
+ }
}
func recipeConfirmDeletionGet(w http.ResponseWriter, r *http.Request) {
@@ -198,15 +160,10 @@ func recipeConfirmDeletionGet(w http.ResponseWriter, r *http.Request) {
http.Error(w, "Exactly 1 'id' URL parameter expected.", 400)
return
}
- idStr := ids[0]
- type Element struct {
- Id string
- }
- var element Element
- element.Id = idStr
+ recipe := Recipe{ids[0], "", "", ""}
- ServeTemplate(w, "recipe_confirm_deletion.html", element)
+ ServeTemplate(w, "recipe_confirm_deletion.html", recipe)
}
func recipeConfirmDeletionPost(w http.ResponseWriter, r *http.Request) {
@@ -216,12 +173,10 @@ func recipeConfirmDeletionPost(w http.ResponseWriter, r *http.Request) {
http.Error(w, "Exactly 1 'id' URL parameter expected.", 400)
return
}
- idStr := ids[0]
- cmd := fmt.Sprintf("DELETE FROM recipes where (id='%s');", idStr)
- _, err := db.Query(cmd)
+ recipedir := fmt.Sprintf("data/storage/recipes/%s", ids[0])
+ err := os.RemoveAll(recipedir)
if err != nil {
- fmt.Print(err)
http.Error(w, "Could not delete recipe.", 500)
return;
}
@@ -229,37 +184,49 @@ func recipeConfirmDeletionPost(w http.ResponseWriter, r *http.Request) {
http.Redirect(w, r, "/index.html", 303)
}
-func updateRecipe(body string, idStr string) {
+func addRecipesGet(w http.ResponseWriter, r *http.Request) {
- _, _ = db.Exec(`
- UPDATE
- recipes
- SET
- description_markdown=?
- WHERE
- (id=?);
- `,
- body, idStr,
- ) // FIXME error handling
+ entries, err := os.ReadDir("data/storage/recipes")
+ if err != nil {
+ http.Error(w, "Could not get list of existing recipes!", 500)
+ return
+ }
- return
-}
+ var biggest int = -1
-func addRecipesGet(w http.ResponseWriter, r *http.Request) {
+ for _,v := range entries {
+ if v.IsDir() == false {
+ continue
+ }
- cmd := fmt.Sprintf("INSERT INTO recipes (title) VALUES ('%s')", "New recipe")
- res, err := db.Exec(cmd)
+ number, err := strconv.Atoi(v.Name())
+ if err != nil {
+ continue
+ }
+
+ if number > biggest {
+ biggest = number
+ }
+ }
+
+ newId := biggest + 1
+
+ recipedir := fmt.Sprintf("data/storage/recipes/%d", newId)
+ err = os.Mkdir(recipedir, 0755)
if err != nil {
- http.Error(w, "Could not create recipe.", 500)
+ http.Error(w, "Could not create new recipe!", 500)
return
}
- id, err := res.LastInsertId()
+
+ textpath := fmt.Sprintf("data/storage/recipes/%d/text", newId)
+ err = os.WriteFile(textpath, make([]byte, 0), 0644)
if err != nil {
- http.Error(w, "Could not get new recipe ID from database", 500)
- } else {
- redirect := fmt.Sprintf("/recipe/edit?id=%d", id)
- http.Redirect(w, r, redirect, 303)
+ http.Error(w, "Could not create new recipe!", 500)
+ return
}
+
+ redirect := fmt.Sprintf("/recipe/edit?id=%d", newId)
+ http.Redirect(w, r, redirect, 303)
}
func staticGet(w http.ResponseWriter, r *http.Request, filename string) {
diff --git a/main.go b/main.go
index 483633c..3cf6fa7 100644
--- a/main.go
+++ b/main.go
@@ -1,35 +1,16 @@
package main
import (
- "database/sql"
"log"
- "os"
- "os/signal"
- "syscall"
"text/template"
)
var config RuntimeConfig
-var db *sql.DB
var templates *template.Template
func main() {
log.Printf("Started Ceres recipe server.\n")
config = GetRuntimeConfig()
templates = setupTemplates()
- db = setupDatabase()
- provideShutdown()
runServer()
}
-
-func provideShutdown() {
- var listener = make(chan os.Signal)
- signal.Notify(listener, syscall.SIGTERM)
- signal.Notify(listener, syscall.SIGINT)
- go func() {
- signal := <-listener
- log.Printf("Got signal '%+v'. Shutdown is started.\n", signal)
- dbCleanup(db)
- os.Exit(0)
- }()
-}
diff --git a/sql/0001_migration.sql b/sql/0001_migration.sql
deleted file mode 100644
index 9502e6c..0000000
--- a/sql/0001_migration.sql
+++ /dev/null
@@ -1,18 +0,0 @@
-
---------------------------------------------------------------------------------
-
--- This migration script adds the initial version of the Ceres database.
--- Run this migration via `sudo mariadb -u root < 0001_migration.sql`.
-
--- create database for ceres, add ceres user and set privileges
-CREATE DATABASE IF NOT EXISTS ceres;
-
--- select correct database for the rest of this script
-USE ceres;
-
--- create meta table and set database schema version
-CREATE TABLE IF NOT EXISTS meta (
- identifier varchar(80) PRIMARY KEY NOT NULL UNIQUE,
- value varchar(80) NOT NULL
-);
-INSERT INTO meta (identifier,value) VALUES ('version', '1');
diff --git a/sql/0002_migration.sql b/sql/0002_migration.sql
deleted file mode 100644
index 7c99616..0000000
--- a/sql/0002_migration.sql
+++ /dev/null
@@ -1,25 +0,0 @@
-
---------------------------------------------------------------------------------
-
--- This migration creates the initial version of the database layout.
-
--- Run this command as Linux user `ceres` with this command:
--- `mariadb < 0002_migration.sql`.
-
--- set database for this script
-USE ceres;
-
--- create recipe table
-CREATE TABLE IF NOT EXISTS recipes (
- id INT UNSIGNED PRIMARY KEY NOT NULL AUTO_INCREMENT,
- title varchar(80) NOT NULL DEFAULT '(no title)',
- upstream_url varchar(200) NOT NULL DEFAULT '',
- description_markdown text NOT NULL DEFAULT ''
-);
-
--- update database schema version
-UPDATE meta
-SET
- value='2'
-WHERE
- identifier='version';
generated by cgit v1.2.3-70-g09d2 (git 2.49.0) at 2025-04-04 16:58:22 +0000