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config/config.go

@@ -0,0 +1,127 @@
+// OpenSAPS - Open Slack API server for everyone.
+//
+// Copyright (c) 2017, Stanislav N. aka pztrn.
+// All rights reserved.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+package config
+
+import (
+    // stdlib
+    "errors"
+    "fmt"
+    "io/ioutil"
+    "os/user"
+    "strings"
+
+    // local
+    "lab.pztrn.name/pztrn/opensaps/config/struct"
+
+    // other
+    "gopkg.in/yaml.v2"
+    "lab.pztrn.name/golibs/flagger"
+)
+
+type Configuration struct {}
+
+// Returns configuration to caller.
+func (conf Configuration) GetConfig() *configstruct.ConfigStruct {
+    return config
+}
+
+// Gets value from temporary configuration storage.
+// If value isn't found - returns empty string with error.
+func (conf Configuration) GetTempValue(key string) (string, error) {
+    value, found := tempconfig[key]
+    if !found {
+        return "", errors.New("No such key in temporary configuration storage: " + key)
+    }
+
+    // If we have path with tilde in front (home directory) - replace
+    // tilde with actual home directory.
+    if value[0] == '~' {
+        usr, err := user.Current()
+        if err != nil {
+            c.Log.Fatalln("Failed to get current user data: " + err.Error())
+        }
+        value = strings.Replace(value, "~", usr.HomeDir, 1)
+    }
+
+    return value, nil
+}
+
+func (conf Configuration) Initialize() {
+    c.Log.Infoln("Initializing configuration storage...")
+
+    tempconfig = make(map[string]string)
+
+    flag_configpath := flagger.Flag{
+        Name: "config",
+        Description: "Path to configuration file.",
+        Type: "string",
+        DefaultValue: "~/.config/OpenSAPS/config.yaml",
+    }
+
+    c.Flagger.AddFlag(&flag_configpath)
+}
+
+// Initializes configuration root path for later usage.
+func (conf Configuration) initializeConfigurationFilePath() {
+    c.Log.Debugln("Asking flagger about configuration root path supplied by user...")
+
+    configpath, err := c.Flagger.GetStringValue("config")
+    if err != nil {
+        c.Log.Fatalln("Something went wrong - Flagger doesn't know about \"-config\" parameter!")
+    }
+
+    c.Log.Infoln("Will use configuration file: '" + configpath + "'")
+    conf.SetTempValue("CONFIGURATION_FILE", configpath)
+}
+
+// Asking Flagger about flags, initialize internal variables.
+// Should be called **after** Flagger.Parse().
+func (conf Configuration) InitializeLater() {
+    c.Log.Infoln("Completing configuration initialization...")
+
+    conf.initializeConfigurationFilePath()
+}
+
+// Loads configuration from file.
+func (conf Configuration) LoadConfigurationFromFile() {
+    configpath, err := conf.GetTempValue("CONFIGURATION_FILE")
+    if err != nil {
+        c.Log.Fatalln("Failed to get configuration file path from internal temporary configuration storage! OpenSAPS is BROKEN!")
+    }
+    c.Log.Infof("Loading configuration from '%s'...", configpath)
+
+    // Read file into memory.
+    config_bytes, err1 := ioutil.ReadFile(configpath)
+    if err1 != nil {
+        c.Log.Fatalf("Error occured while reading configuration file: %s", err1.Error())
+    }
+
+    config = &configstruct.ConfigStruct{}
+    // Parse YAML.
+    err2 := yaml.Unmarshal(config_bytes, config)
+    if err2 != nil {
+        c.Log.Fatalf("Failed to parse configuration file: %s", err2.Error())
+    }
+    c.Log.Debugln("Loaded configuration:", fmt.Sprintf("%+v", config))
+}
+
+// Sets value to key in temporary configuration storage.
+// If key already present in map - value will be replaced.
+func (conf Configuration) SetTempValue(key, value string) {
+    tempconfig[key] = value
+}

config/exported.go

@@ -0,0 +1,39 @@
+// OpenSAPS - Open Slack API server for everyone.
+//
+// Copyright (c) 2017, Stanislav N. aka pztrn.
+// All rights reserved.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+package config
+
+import (
+    // local
+    "lab.pztrn.name/pztrn/opensaps/config/interface"
+    "lab.pztrn.name/pztrn/opensaps/config/struct"
+    "lab.pztrn.name/pztrn/opensaps/context"
+)
+
+var (
+    c *context.Context
+    // Temporary configuration.
+    tempconfig map[string]string
+    // Configuration from YAML file.
+    config *configstruct.ConfigStruct
+)
+
+func New(cc *context.Context) {
+    c = cc
+    conf := Configuration{}
+    c.RegisterConfigurationInterface(configurationinterface.ConfigurationInterface(conf))
+}

config/interface/configurationinterface.go

@@ -0,0 +1,32 @@
+// OpenSAPS - Open Slack API server for everyone.
+//
+// Copyright (c) 2017, Stanislav N. aka pztrn.
+// All rights reserved.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+package configurationinterface
+
+import (
+    // local
+    "lab.pztrn.name/pztrn/opensaps/config/struct"
+)
+
+type ConfigurationInterface interface {
+    GetConfig() *configstruct.ConfigStruct
+    GetTempValue(key string) (string, error)
+    Initialize()
+    InitializeLater()
+    LoadConfigurationFromFile()
+    SetTempValue(key, value string)
+}

config/struct/struct.go

@@ -0,0 +1,59 @@
+// OpenSAPS - Open Slack API server for everyone.
+//
+// Copyright (c) 2017, Stanislav N. aka pztrn.
+// All rights reserved.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+package configstruct
+
+// Config's root.
+type ConfigStruct struct {
+    SlackHandler            ConfigSlackHandler              `yaml:"slackhandler"`
+    Webhooks                map[string]ConfigWebhook        `yaml:"webhooks"`
+    Matrix                  map[string]ConfigMatrix         `yaml:"matrix"`
+}
+
+// Slack handler configuration.
+type ConfigSlackHandler struct {
+    Listener                ConfigSlackHandlerListener      `yaml:"listener"`
+}
+
+type ConfigSlackHandlerListener struct {
+    Address                 string                          `yaml:"address"`
+}
+
+// Webhook configuration.
+type ConfigWebhook struct {
+    Slack                   ConfigWebhookSlack              `yaml:"slack"`
+    Remote                  ConfigWebhookRemote             `yaml:"remote"`
+}
+
+type ConfigWebhookSlack struct {
+    Random1                 string                          `yaml:"random1"`
+    Random2                 string                          `yaml:"random2"`
+    LongRandom              string                          `yaml:"longrandom"`
+}
+
+type ConfigWebhookRemote struct {
+    Pusher                  string                          `yaml:"pusher"`
+    PushTo                  string                          `yaml:"push_to"`
+}
+
+// Matrix pusher configuration.
+type ConfigMatrix struct {
+    ApiRoot                 string                          `yaml:"api_root"`
+    User                    string                          `yaml:"user"`
+    Password                string                          `yaml:"password"`
+    Room                    string                          `yaml:"room"`
+}