If an invalid value or type is given to the REST API, having the expected
type as well as the given type make problem resolution easier.
Also added a value check into MaxCtrl for listener ports.
Added commands for creating and destroying services. The create command
allows server and filter relationships to be defined but they are not yet
processed by MaxScale. This will be done once the use of filters is made
dynamic.
When MaxCtrl is being built, the source is copied into the build directory
to prevent polluting the source tree with node_modules. This means that
any relative references MaxCtrl builds make outside of the maxctrl
directory must be copied to the build directory.
Displaying the MaxScale version helps identify which package the
executable was bundled with. As the MaxCtrl source is a part of MaxScale,
there's no need for separate versioning.
If only one server is used, the amount of requests can be reduced from a
minimum of two to a minimum of one. In most cases this cuts down the
response time in half.
The `drain server` commands removes a server from all services and waits
until all the connections for it are closed. Once the server is no longer
in use, it will be set into maintenance mode and put back into the
services where it was removed from.
The `show sessions` output now displays the servers each session is
connected to along with their connections IDs. The output format of the
data is not the most compact representation but it should make it
relatively easy to parse.
Each `show` type command that takes a resource name now also has a version
that prints all resources of that type.
Added test cases for newly added commands.
The requesting of a resource and the processing was integrated into one
function. Moving the processing part into a separate function allows easy
processing of resource collections.
This refactoring made the creation of the getCollectionAsResource function
possible. It enables `show` type commands for resouce collections
(servers, services etc.).
The state of each individual listener is now displayed in the REST
API. Created common functions for printing the listener state and took
them into use. Added the new state into MaxCtrl output.
Being able to perform raw REST API calls that leverage the value
extraction capabilities of Node.js gives more control to the end user. It
also doubles as a handy tool for creating scripts that only require one
particular value from the REST API.
When the -p parameter is given without an argument, the password is read
from the command line. This allows passwords to be given to MaxCtrl in a
safer manner.
Test that `list servers` works with both monitored and unmonitored
servers. The test doesn't check that the GTID is present as the test setup
uses file and position based replication.
When TSV output is requested, the output should not contain the ANSI color
codes. This appears to be a "feature" of the table generation library but
it is quite simple to work around.
When the servers were iterated, each related monitor was requested. This
caused as many requests for monitors as there are servers.
By creating a set of unique monitor names and requesting them once, we
avoid the redundant requests from the monitor.
The function getResource had two different implementations that did very
different things. The newer version, that returns the raw JSON object that
represents a resource, was renamed to getJson.
Added the `GTID` field to make it easier to track GTID values of the
servers. This is done by requesting the related monitors for each server
and injecting an extra parameter into the server resource.
MaxCtrl now supports explicit paths for certificates and optional server
certificate verification. This allows testing by using a self-signed
certificate with the server certificate verification turned off.
Using commas instead of spaces prevents a the misinterpretation of
commands as hostnames. If the `--hosts` option was given just before a
command, it would consume the commands as arguments to the `--hosts` list.
