Remove default filter pattern

README.md

@@ -11,16 +11,16 @@ Plugin which auto-subscribes a log delivery lambda function to lambda log groups
 ```yaml
 plugins:
   - serverless-plugin-cloudwatch-sumologic
-  
+
 custom:
     shipLogs:
         # Required
         arn: existing cloudwatch logs ARN
         # OR
         collectorUrl: Paste your url from step 1. here
 
-        # Optional, default pattern is "[timestamp=*Z, request_id=\"*-*\", event]"
-        filterPattern: "[timestamp=*Z, request_id=\"*-*\", correlation_id=\"*-*\", event]"
+        # Optional. By default no pattern is specified.
+        filterPattern: "[log_level, timestamp=*Z, request_id=\"*-*\", correlation_id=\"*-*\", event]"
         role: ARN of IAM role to use
 ```
 
@@ -37,6 +37,11 @@ Upon running `sls deploy` it will...
     2. Permissions to Invoke the logging function, as a Resource.
 3. Wait for the stack creation/update to complete and then delete the temporarily created function source directory.
 
+# Upgrading
+
+See [UPGRADING.md](https://github.com/ACloudGuru/serverless-plugin-cloudwatch-sumologic/blob/master/UPGRADING.md)
+for information on upgrading from previous versions of the plugin.
+
 # Caveats
 You must be running serverless 1.25.0 or higher.
 

UPGRADING.md

@@ -0,0 +1,20 @@
+# Upgrading
+
+## From < 0.1.0
+
+* `filterPattern` used to default to `[timestamp=*Z, request_id=\"*-*\", event]`.
+  However, this was an unreliable default because some runtimes report in
+  different formats. See [issue #16](https://github.com/ACloudGuru/serverless-plugin-cloudwatch-sumologic/issues/16)
+  for more information.
+
+  To retain the prior behavior, you'll need to set the following `filterPattern`
+  value in your `serverless.yml` file.
+
+  ```yaml
+    plugins:
+      - serverless-plugin-cloudwatch-sumologic
+
+    custom:
+      shipLogs:
+        filterPattern: "[timestamp=*Z, request_id=\"*-*\", event]"
+  ```

src/index.js

@@ -77,7 +77,7 @@ class Plugin {
         this.serverless.cli.log('Generating subscription filters');
         const filterPattern = !!this.serverless.service.custom.shipLogs.filterPattern
             ? this.serverless.service.custom.shipLogs.filterPattern
-            : "[timestamp=*Z, request_id=\"*-*\", event]";
+            : "";
         const principal = `logs.${this.serverless.service.provider.region}.amazonaws.com`;
         const slsResources = this.serverless.service.provider.compiledCloudFormationTemplate.Resources;