Sudheer Vinukonda created TS-3881:
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Summary: 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
Reporter: 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, TSCacheStateKey key,
TSMgmtInt *value);
{code}
+
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