MeasurementStatus » History » Version 20
Davide Pesavento, 02/15/2018 12:54 PM
1 | 4 | Ashlesh Gawande | # Measurement Status |
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2 | 1 | Ashlesh Gawande | |
3 | 20 | Davide Pesavento | {{>toc}} |
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5 | 12 | Ashlesh Gawande | Measurement Status is a module of [[Management|NFD Management protocol]]. |
6 | 4 | Ashlesh Gawande | It provides measurement table entries for a given name prefix. |
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8 | 9 | Ashlesh Gawande | Measurements for a prefix is published as a [[StatusDataset|Status Dataset]] at: ndn:/localhost/nfd/measurements/query/ |
9 | 4 | Ashlesh Gawande | |
10 | 11 | Ashlesh Gawande | ## Control Parameters |
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12 | ControlParameters fields: |
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14 | Name (required) |
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16 | Name is the prefix for which the measurement query is made. |
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17 | A forwarder MAY impose a limit on the length of name prefix. The current limit in NFD is 32 name components. |
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18 | If Name exceeds this limit, the command fails with code 414. |
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19 | 13 | Ashlesh Gawande | Code 400 is returned if the command is malformed. |
20 | 11 | Ashlesh Gawande | |
21 | ## Measurement Entry Dataset |
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22 | |||
23 | Each measurement entry is represented by **MeasurementEntry** block: |
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24 | |||
25 | MeasurementEntry := MEASUREMENT-ENTRY-TYPE TLV-LENGTH |
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26 | Name |
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27 | StrategyInfo |
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29 | 18 | Ashlesh Gawande | * **Name** is the prefix for which the query was made |
30 | 1 | Ashlesh Gawande | * **StrategyInfo** is the measurement info provided by the strategy responsible for the given name |
31 | 12 | Ashlesh Gawande | |
32 | Strategy returns a boost::property_tree when queried and managements formats that as JSON string for StrategyInfo. |
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33 | 19 | Ashlesh Gawande | Code 501 is returned if the strategy responsible for the prefix does not support measurement queries. |
34 | 3 | Ashlesh Gawande | |
35 | 2 | Ashlesh Gawande | ## TLV-TYPE assignments |
36 | |||
37 | Type | Assigned number | Assigned number (hex) |
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38 | ------------------------------------------- | ----------------- | --------------------- |
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39 | MeasurementEntry | 128 | 0x80 |
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40 | StrategyInfo | 129 | 0x81 |