Fix ameba/linting and bump version for release.

The Ameba version was too old, so it was bumped.
An .ameba.yml file was introduced to better control linting rules, and the issues that Ameba identified were fixed.
The shard.yml version and VERSION were bumped to 0.5.2 to prepare for a release.

.ameba.yml

@@ -0,0 +1,16 @@
+# This configuration file was generated by `ameba --gen-config`
+# on 2023-05-10 14:20:09 UTC using Ameba version 1.4.3.
+# The point is for the user to remove these configuration records
+# one by one as the reported problems are removed from the code base.
+
+# Problems found: 643
+# Run `ameba --only Lint/NotNil` for details
+Lint/NotNil:
+  Description: Identifies usage of `not_nil!` calls
+  Excluded:
+  - spec/instrumentation/crystal_http_websocket_spec.cr
+  - spec/instrumentation/stefanwille_redis_spec.cr
+  - src/opentelemetry/instrumentation/crystal/http_server.cr
+  - src/opentelemetry/instrumentation/crystal/http_client.cr
+  Enabled: false
+  Severity: Warning

VERSION

@@ -1 +1 @@
-0.5.1
+0.5.2

shard.yml

@@ -1,5 +1,5 @@
 name: opentelemetry-instrumentation
-version: 0.5.1
+version: 0.5.2
 
 authors:
   - Kirk Haines <[email protected]>
@@ -19,7 +19,7 @@ dependencies:
 development_dependencies:
   ameba:
     github: crystal-ameba/ameba
-    version: ~> 1.0.0
+    version: ~> 1.4.3
   sqlite3:
     github: crystal-lang/crystal-sqlite3
   # Only one of these can be enabled, since they sit in the exact same namespace.

spec/instrumentation/crystal_log_spec.cr

@@ -16,26 +16,26 @@ describe Log, tags: "Log" do
 
   it "can log as normal and send attach the log as an event to a span" do
     checkout_config do
-    memory = IO::Memory.new
-    OpenTelemetry.configure do |config|
-      config.service_name = "Crystal OTel Instrumentation - HTTP::Server"
-      config.service_version = "1.0.0"
-      config.exporter = OpenTelemetry::Exporter.new(variant: :io, io: memory)
-    end
-    backend = Log::MemoryBackend.new
-    message = "I am a message, and there is an active span."
-    Log.setup(:info, backend)
+      memory = IO::Memory.new
+      OpenTelemetry.configure do |config|
+        config.service_name = "Crystal OTel Instrumentation - HTTP::Server"
+        config.service_version = "1.0.0"
+        config.exporter = OpenTelemetry::Exporter.new(variant: :io, io: memory)
+      end
+      backend = Log::MemoryBackend.new
+      message = "I am a message, and there is an active span."
+      Log.setup(:info, backend)
 
-    OpenTelemetry.trace.in_span("logging test span") do |_span|
-      Log.info { message }
-    end
+      OpenTelemetry.trace.in_span("logging test span") do |_span|
+        Log.info { message }
+      end
 
-    backend.entries.first.message.should eq message
-    _client_traces, server_traces = FindJson.from_io(memory)
-    server_traces[0]["spans"][0]["name"].should eq "logging test span"
-    server_traces[0]["spans"][0]["events"].size.should be > 0
-    server_traces[0]["spans"][0]["events"][0]["name"].should eq "Log.INFO"
-    server_traces[0]["spans"][0]["events"][0]["attributes"]["message"].as_s.should contain(message)
+      backend.entries.first.message.should eq message
+      _client_traces, server_traces = FindJson.from_io(memory)
+      server_traces[0]["spans"][0]["name"].should eq "logging test span"
+      server_traces[0]["spans"][0]["events"].size.should be > 0
+      server_traces[0]["spans"][0]["events"][0]["name"].should eq "Log.INFO"
+      server_traces[0]["spans"][0]["events"][0]["attributes"]["message"].as_s.should contain(message)
+    end
   end
 end
-end

spec/instrumentation/websocket_spec_helper.cr

@@ -1,7 +1,7 @@
 require "../spec_helper"
 require "../support/fibers"
 
-private def wait_for(timeout = 5.seconds)
+private def wait_for(timeout = 5.seconds, &)
   now = Time.monotonic
 
   until yield
@@ -22,7 +22,7 @@ end
 #    shut down before continuing execution in the current fiber.
 # 6. If the listening fiber raises an exception, it is rescued and re-raised
 #    in the current fiber.
-def run_server(server)
+def run_server(server, &)
   server_done = Channel(Exception?).new
 
   f = spawn do
@@ -49,7 +49,7 @@ end
 
 # Helper method which runs a *handler*
 # Similar to `run_server` but doesn't go through the network stack.
-def run_handler(handler)
+def run_handler(handler, &)
   done = Channel(Exception?).new
 
   begin

spec/spec_helper.cr

@@ -16,7 +16,7 @@ def clear_env
   end
 end
 
-def checkout_config(clear : Bool = true)
+def checkout_config(clear : Bool = true, &)
   config = OpenTelemetry.config
   clear_env if clear
   yield

src/opentelemetry-instrumentation/log_backend.cr

@@ -42,7 +42,7 @@ class OpenTelemetry::Instrumentation::LogBackend < ::Log::Backend
   end
 
   def write(entry : ::Log::Entry)
-    if (span = OpenTelemetry::Trace.current_span)
+    if span = OpenTelemetry::Trace.current_span
       span.add_event("Log.#{entry.severity.label}#{" - #{entry.source}" unless entry.source.empty?}") do |event|
         self.class.apply_log_entry(entry, event)
       end