benthos 2.9.3 (new formula)

Closes #42421.

Signed-off-by: Chongyu Zhu <i@lembacon.com>

Formula/benthos.rb

@@ -0,0 +1,47 @@
+class Benthos < Formula
+  desc "Stream processor for mundane tasks written in Go"
+  homepage "https://www.benthos.dev"
+  url "https://github.com/Jeffail/benthos/archive/v2.9.3.tar.gz"
+  sha256 "40c8e53081ce6ea115dad574769f74b0cd7de467ec4f2212747d867bb10e96bc"
+
+  depends_on "go" => :build
+
+  def install
+    ENV["GOPATH"] = buildpath
+    ENV["GO111MODULE"] = "on"
+
+    src = buildpath/"src/github.com/Jeffail/benthos"
+    src.install buildpath.children
+    src.cd do
+      system "make", "VERSION=#{version}"
+      bin.install "target/bin/benthos"
+      prefix.install_metafiles
+    end
+  end
+
+  test do
+    (testpath/"sample.txt").write <<~EOS
+      QmVudGhvcyByb2NrcyE=
+    EOS
+
+    (testpath/"test_pipeline.yaml").write <<~EOS
+      ---
+      logger:
+        level: ERROR
+      input:
+        type: file
+        file:
+          path: ./sample.txt
+      pipeline:
+        threads: 1
+        processors:
+         - type: decode
+           decode:
+           scheme: base64
+      output:
+        type: stdout
+    EOS
+    output = shell_output("#{bin}/benthos -c test_pipeline.yaml")
+    assert_match "Benthos rocks!", output.strip
+  end
+end