1 // Copyright 2021 Google LLC
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 //      http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 
15 #pragma once
16 
17 #include <blobs-ipmid/blobs.hpp>
18 #include <metric.hpp>
19 
20 #include <cstdint>
21 #include <string>
22 #include <vector>
23 
24 namespace blobs
25 {
26 
27 class MetricBlobHandler : public GenericBlobInterface
28 {
29   public:
30     MetricBlobHandler() = default;
31     ~MetricBlobHandler() = default;
32     MetricBlobHandler(const MetricBlobHandler&) = delete;
33     MetricBlobHandler& operator=(const MetricBlobHandler&) = delete;
34     MetricBlobHandler(MetricBlobHandler&&) = default;
35     MetricBlobHandler& operator=(MetricBlobHandler&&) = default;
36 
37     bool canHandleBlob(const std::string& path) override;
38     std::vector<std::string> getBlobIds() override;
39     bool deleteBlob(const std::string& path) override;
40     bool stat(const std::string& path, BlobMeta* meta) override;
41     bool open(uint16_t session, uint16_t flags,
42               const std::string& path) override;
43     std::vector<uint8_t> read(uint16_t session, uint32_t offset,
44                               uint32_t requestedSize) override;
45     bool write(uint16_t session, uint32_t offset,
46                const std::vector<uint8_t>& data) override;
47     bool writeMeta(uint16_t session, uint32_t offset,
48                    const std::vector<uint8_t>& data) override;
49     bool commit(uint16_t session, const std::vector<uint8_t>& data) override;
50     bool close(uint16_t session) override;
51     bool stat(uint16_t session, BlobMeta* meta) override;
52     bool expire(uint16_t session) override;
53 
54   private:
55     bool isReadOnlyOpenFlags(const uint16_t flag);
56     /* Every session gets its own BmcHealthSnapshot instance. */
57     std::unordered_map<uint16_t,
58                        std::unique_ptr<metric_blob::BmcHealthSnapshot>>
59         sessions;
60 };
61 
62 } // namespace blobs
63