1 files changed, 94 insertions, 0 deletions
diff --git a/fluent-bit/plugins/in_docker/docker.h b/fluent-bit/plugins/in_docker/docker.h
new file mode 100644
index 000000000..d3814c390
--- /dev/null
+++ b/fluent-bit/plugins/in_docker/docker.h
@@ -0,0 +1,94 @@
+/* -*- 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_IN_DOCKER_H
+#define FLB_IN_DOCKER_H
+
+#include <fluent-bit/flb_info.h>
+#include <fluent-bit/flb_config.h>
+#include <fluent-bit/flb_input.h>
+#include <fluent-bit/flb_utils.h>
+#include <fluent-bit/flb_log_event_encoder.h>
+
+
+#define CURRENT_DIR           "."
+#define PREV_DIR              ".."
+#define OS_DIR_TYPE           4
+#define DOCKER_LONG_ID_LEN    64
+#define DOCKER_SHORT_ID_LEN   12
+#define DOCKER_CGROUP_V1_MEM_DIR "/sys/fs/cgroup/memory/docker"
+#define DOCKER_CGROUP_V1_CPU_DIR "/sys/fs/cgroup/cpu/docker"
+#define DOCKER_CGROUP_V1_MEM_LIMIT_FILE "memory.limit_in_bytes"
+#define DOCKER_CGROUP_V1_MEM_USAGE_FILE "memory.usage_in_bytes"
+#define DOCKER_CGROUP_V1_CPU_USAGE_FILE "cpuacct.usage"
+#define DOCKER_LIB_ROOT       "/var/lib/docker/containers"
+#define DOCKER_CONFIG_JSON    "config.v2.json"
+#define DOCKER_NAME_ARG       "\"Name\""
+#define DEFAULT_INTERVAL_SEC  "1"
+#define DEFAULT_INTERVAL_NSEC "0"
+
+typedef struct docker_info {
+    char *id;
+    struct mk_list _head;
+} docker_info;
+
+typedef struct cpu_snapshot {
+    unsigned long used;
+} cpu_snapshot;
+
+typedef struct mem_snapshot {
+    uint64_t limit;
+    uint64_t used;
+} mem_snapshot;
+
+typedef struct docker_snapshot {
+    char *id;
+    char *name;
+    mem_snapshot *mem;
+    cpu_snapshot *cpu;
+    struct mk_list _head;
+} docker_snapshot;
+
+struct flb_docker;
+
+struct cgroup_api {
+    int cgroup_version;
+    struct mk_list* (*get_active_docker_ids) ();
+    char*           (*get_container_name) (struct flb_docker *, char *);
+    cpu_snapshot*   (*get_cpu_snapshot)   (struct flb_docker *, char *);
+    mem_snapshot*   (*get_mem_snapshot)   (struct flb_docker *, char *);
+};
+int in_docker_set_cgroup_api_v1(struct cgroup_api *api);
+
+/* Docker Input configuration & context */
+struct flb_docker {
+    int coll_fd;                /* collector id/fd */
+    int interval_sec;           /* interval collection time (Second) */
+    int interval_nsec;          /* interval collection time (Nanosecond) */
+    struct mk_list *whitelist;  /* dockers to monitor */
+    struct mk_list *blacklist;  /* dockers to exclude */
+    struct cgroup_api cgroup_api;
+    struct flb_input_instance *ins;
+    struct flb_log_event_encoder log_encoder;
+};
+
+int in_docker_collect(struct flb_input_instance *i_ins,
+                      struct flb_config *config, void *in_context);
+docker_info *in_docker_init_docker_info(char *id);
+#endif