1 files changed, 57 insertions, 0 deletions
diff --git a/src/fluent-bit/plugins/out_cloudwatch_logs/cloudwatch_api.h b/src/fluent-bit/plugins/out_cloudwatch_logs/cloudwatch_api.h
new file mode 100644
index 000000000..99919055b
--- /dev/null
+++ b/src/fluent-bit/plugins/out_cloudwatch_logs/cloudwatch_api.h
@@ -0,0 +1,57 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+
+/*  Fluent Bit
+ *  ==========
+ *  Copyright (C) 2015-2022 The Fluent Bit Authors
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+#ifndef FLB_OUT_CLOUDWATCH_API
+#define FLB_OUT_CLOUDWATCH_API
+
+/*
+ * The CloudWatch API documents that the maximum payload is 1,048,576 bytes
+ * For reasons that are under investigation, using that number in this plugin
+ * leads to API errors. No issues have been seen setting it to 1,000,000 bytes.
+ */
+#define PUT_LOG_EVENTS_PAYLOAD_SIZE    1048576
+#define MAX_EVENTS_PER_PUT             10000
+
+/* number of characters needed to 'start' a PutLogEvents payload */
+#define PUT_LOG_EVENTS_HEADER_LEN      72
+/* number of characters needed per event in a PutLogEvents payload */
+#define PUT_LOG_EVENTS_PER_EVENT_LEN   42
+/* number of characters needed to 'end' a PutLogEvents payload */
+#define PUT_LOG_EVENTS_FOOTER_LEN      4
+
+/* 256KiB minus 26 bytes for the event */
+#define MAX_EVENT_LEN      262118
+
+#include "cloudwatch_logs.h"
+
+void cw_flush_destroy(struct cw_flush *buf);
+
+int process_and_send(struct flb_cloudwatch *ctx, const char *input_plugin, 
+                     struct cw_flush *buf, flb_sds_t tag,
+                     const char *data, size_t bytes);
+int create_log_stream(struct flb_cloudwatch *ctx, struct log_stream *stream, int can_retry);
+struct log_stream *get_log_stream(struct flb_cloudwatch *ctx, flb_sds_t tag,
+                                  const msgpack_object map);
+int put_log_events(struct flb_cloudwatch *ctx, struct cw_flush *buf,
+                   struct log_stream *stream,
+                   size_t payload_size);
+int create_log_group(struct flb_cloudwatch *ctx, struct log_stream *stream);
+int compare_events(const void *a_arg, const void *b_arg);
+
+#endif