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https://issues.apache.org/jira/browse/TS-3881?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sudheer Vinukonda updated TS-3881:
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Affects Version/s: 6.1.0
> new TS API TSHttpTxnCacheStateGet
> ---------------------------------
>
> Key: TS-3881
> URL: https://issues.apache.org/jira/browse/TS-3881
> Project: Traffic Server
> Issue Type: New Feature
> Components: TS API
> Affects Versions: 6.1.0
> Reporter: Sudheer Vinukonda
> Assignee: Sudheer Vinukonda
>
> I'd like to add a new API TSHttpTxnCacheStateGet() to be able to get more
> insight into cache operations (e.g read_while_write, open read tries, open
> write tries, cache volume used etc) on a given Txn.
> Below's the proposal with the info I'd like the new API return along with the
> API signature.
> Please provide comments/suggestions.
> {code}
> +typedef enum {
> + TS_CACHE_TXN_STATE_HIT_RAM,
> + TS_CACHE_TXN_STATE_READ_WHILE_WRITER,
> + TS_CACHE_TXN_STATE_OPEN_READ_TRIES,
> + TS_CACHE_TXN_STATE_OPEN_WRITE_TRIES,
> + TS_CACHE_TXN_STATE_CACHE_VOLUME,
> + TS_CACHE_TXN_STATE_LAST_ENTRY
> +} TSCacheTxnStateKey;
> +
> +/* Get Cache Lookup state, useful for understanding how a lookup was
> performed */
> +/**
> + Return the particular cache lookup info requested.
> +
> + @param txnp the transaction pointer
> + @param key the requested cache lookup info.
> + @param TSMgmtInt a pointer to a integer where we will store the metric
> value
> +
> + @return @c TS_SUCCESS if the metric is supported, TS_ERROR otherwise
> +
> +*/
> +tsapi TSReturnCode TSHttpTxnCacheStateGet(TSHttpTxn txnp, TSCacheTxnStateKey
> key, TSMgmtInt *value);
> {code}
> +
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