fix: enabling gzip was causing eof errors upon decompression

.chloggen/fix-compression-eof.yaml

@@ -0,0 +1,27 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: bug_fix
+
+# The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver)
+component: exporter/awskinesisexporter
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: "Fixed issue with compression what was causing EOF exceptions when attempting to decompress the payload"
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [32081]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:
+
+# If your change doesn't affect end users or the exported elements of any package,
+# you should instead start your pull request title with [chore] or use the "Skip Changelog" label.
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: [user]

exporter/awskinesisexporter/internal/compress/compresser.go

@@ -16,6 +16,7 @@ type bufferedResetWriter interface {
 	Write(p []byte) (int, error)
 	Flush() error
 	Reset(newWriter io.Writer)
+	Close() error
 }
 
 type Compressor interface {
@@ -74,5 +75,11 @@ func (c *compressor) Do(in []byte) ([]byte, error) {
 		return nil, err
 	}
 
+	if closer, ok := c.compression.(io.Closer); ok {
+		if err := closer.Close(); err != nil {
+			return nil, err
+		}
+	}
+
 	return buf.Bytes(), nil
 }

exporter/awskinesisexporter/internal/compress/noop_compression.go

@@ -26,3 +26,5 @@ func (n noop) Write(p []byte) (int, error) {
 func (n noop) Flush() error {
 	return nil
 }
+
+func (n *noop) Close() error { return n.Close() }