The MetricsRegistry in yammer used to create metrics and register them
in the JMX.
The APIMetricsRegistry extends the functionality by accepting a URL
that the API will perform to retrieve the relevant data, it also creates
the API version of each of the requested Metric (i.e. APIMeter,
APICounter or APIHistogram)
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
Three of the Metric in the yammer library are based on data that is
pushed to them: Counter, Histogram and Meter.
This patch modify the specific functionality by inherit the original
Meter, keeping its functionality and API, and modify the way the data is
collected.
For Counter: A call to count will be implementing by calling the API to
retreive a value.
For Meter: A call to count will be implementing by calling the API to
retreive a value, similiar to count, but the timer aspect of the Meter
remains the same.
For histogram: Histogram uses an internal sample container. To mimic the
behaviour, a call to any of the historgram get functionality will update
the sample container first. A timestamp of the last update limits the
number of updates that will be done by the histogram.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
The DefaultNameFactory which implement the MetricNameFactory responsible
for the metrics names.
They are imported from Origin and placed under urchin package.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
This adds the FailureDetectorMBean and its implementation.
Setting the phi is not supported yet and will be added when the code
will be completed inside the failure_detector implementation.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
This adds the implementation of the Gossiper MBean.
To test, run an urchin server, run the API and use jconsole to connect
to the API.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
This adds a post method to the APIClient to perform POST command on the
API and uses the queryParams API to add query parameters to a query.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
This adds two of the supported CommitLog method, the
getActiveSegmentNames and the getArchivingSegmentNames.
The API for both returns full path, so the JMX API takes the file name
from the path and remove duplicates.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
This was a code that was modified from Origin, in the JMX API
initilization is done in the custructor, which mean that it would enter
an endless loop.
When initiliation in the constructor this should be used.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
The urchin files (Client and Main) where moved to:
com.cloudius.urchin.api and com.cloudius.urchin.main respectively.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
Signed-off-by: Avi Kivity <avi@cloudius-systems.com>
This adds a stub of the StorageService.
After applying it, it will be possible to use JConsole to connect to the
process and run any of the command and inquire all the properties.
Some deprecated methods uses RepairParallelism class, an empty
implementation for it is added. It would be removed with future version
of the MBean, when those methods will be removed from the MBean
As this is a stub, the only effect is a printout on the screen.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
The client hides the comunication details between the jmx and the REST
API.
The current stub was created so an MBean that uses it, can compile and
run with no errors.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
This adds the java project that expose the system MBean.
The Main would start any required classes and would wait forever.
The mvn creates jar with main and set the classpath accordingly.
To start do:
java -jar target/urchin-mbean-1.0.jar
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
