Added log_type's only alpha characters check

Author: Yoichi Kawasaki

ChangeLog.md

@@ -1,3 +1,8 @@
+## 0.3.1
+
+* Add requirements section - [PR#2](https://github.com/yokawasa/fluent-plugin-azure-loganalytics/pull/2)
+* Add log_type characters check as log_type only supports alpha characters - [Issue#3](https://github.com/yokawasa/fluent-plugin-azure-loganalytics/issues/3)
+
 ## 0.3.0
 
 * Migrate to use fluentd v0.14 API - [PR#1](https://github.com/yokawasa/fluent-plugin-azure-loganalytics/pull/1)

README.md

@@ -44,7 +44,7 @@ Once you have the workspace, get Workspace ID and Shared Key (either Primary Key
 
  * **customer\_id (required)** - Your Operations Management Suite workspace ID
  * **shared\_key (required)** - The primary or the secondary Connected Sources client authentication key
- * **log\_type (required)** - The name of the event type that is being submitted to Log Analytics
+ * **log\_type (required)** - The name of the event type that is being submitted to Log Analytics. log_type only supports alpha characters
  * **time\_generated\_field (optional)** - Default:''(empty string) The name of the time generated field. Be carefule that the value of field should strictly follow the ISO 8601 format (YYYY-MM-DDThh:mm:ssZ). See also [this](https://docs.microsoft.com/en-us/azure/log-analytics/log-analytics-data-collector-api#create-a-request) for more details
  * **add\_time\_field (optional)** - Default:true. This option allows to insert a time field to record
  * **time\_field\_name (optional)** - Default:time. This is required only when add_time_field is true

VERSION

@@ -1 +1 @@
-0.3.0
+0.3.1

lib/fluent/plugin/out_azure-loganalytics.rb

@@ -17,7 +17,7 @@ class AzureLogAnalyticsOutput < Output
     config_param :shared_key, :string, :secret => true,
                  :desc => "The primary or the secondary Connected Sources client authentication key"
     config_param :log_type, :string,
-                 :desc => "The name of the event type that is being submitted to Log Analytics"
+                 :desc => "The name of the event type that is being submitted to Log Analytics. log_type only alpha characters"
     config_param :time_generated_field, :string, :default => '',
                  :desc => "The name of the time generated field. Be carefule that the value of field should strictly follow the ISO 8601 format (YYYY-MM-DDThh:mm:ssZ)"
     config_param :add_time_field, :bool, :default => true,
@@ -44,6 +44,9 @@ def configure(conf)
       raise Fluent::ConfigError, 'no customer_id' if @customer_id.empty?
       raise Fluent::ConfigError, 'no shared_key' if @shared_key.empty?
       raise Fluent::ConfigError, 'no log_type' if @log_type.empty?
+      if not @log_type.match(/^[[:alpha:]]+$/)
+        raise Fluent::ConfigError, 'log_type supports only alpha characters'
+      end
       if @add_time_field and @time_field_name.empty?
         raise Fluent::ConfigError, 'time_field_name must be set if add_time_field is true'
       end