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sdi: Add support for 'sendMainPid' and 'extendTimeout' shared object functions #3

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sdi: Add support for 'sendMainPid' and 'extendTimeout' shared object functions #3

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38 changes: 38 additions & 0 deletions src/sdi.q
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Original file line number Diff line number Diff line change
Expand Up @@ -17,18 +17,28 @@
.sdi.cfg.soFunctionMap[`getInterval]: 1;
.sdi.cfg.soFunctionMap[`sendWatchdog]: 1;
.sdi.cfg.soFunctionMap[`sendStatus]: 1;
.sdi.cfg.soFunctionMap[`sendMainPid]: 1;
.sdi.cfg.soFunctionMap[`extendTimeout]: 1;

/ The list of supported OS types for 'systemd' integration
.sdi.cfg.systemdSupportedOs:`l`v;


/ Logs the 'systemd' state transitions based on the functions called in this library
/ @see .sdi.i.sendReady
/ @see .sdi.sendStopping
.sdi.state:`state xkey flip `state`transitionAt!"SP"$\:();


.sdi.init:{
if[not .os.type in .sdi.cfg.systemdSupportedOs;
.log.if.info "systemd is not supported on the current OS [ OS: ",string[.os.type]," ]";
:(::);
];

.sdi.i.loadNativeFunctions[];

`.sdi.state upsert (`starting; .time.now[]);
};


Expand All @@ -47,6 +57,8 @@
/ @see .sdi.so.sendStopping
.sdi.sendStopping:{
.log.if.debug "Notifying systemd that kdb application is stopping";
`.sdi.state upsert (`stopping; .time.now[]);

.sdi.so.sendStopping[];
};

Expand All @@ -58,6 +70,30 @@
.sdi.so.sendStatus status;
};

/ Sends the main PID of the application to systemd
/ @param pid (Integer) Null to send the current pid ('.z.i') or a PID if a different 'primary' process
/ @see .sdi.so.sendMainPid
.sdi.sendMainPid:{[pid]
$[null pid;
pid:.z.i;
not .type.isInteger pid;
'"IllegalArgumentException"
];

.log.if.debug ("Sending main PID to systemd [ PID: {} ]"; pid);
.sdi.so.sendMainPid pid;
};

.sdi.extendTimeout:{[extension]
if[not .type.isTimespan extension;
'"IllegalArgumentException";
];

currentState:last[0!.sdi.state]`state;

.log.if.info ("Extending systemd timeout [ Current State: {} ] [ Extension: {} ]"; currentState; extension);
.sdi.so.extendTimeout currentState;
};

/ Binds the stopping notification to the process.exit event
/ @see .sdi.sendStopping
Expand All @@ -83,6 +119,8 @@
/ @see .sdi.so.sendReady
.sdi.i.sendReady:{
.log.if.info "Notifying systemd that kdb application is ready";
`.sdi.state upsert (`ready; .time.now[]);

.sdi.so.sendReady[];
};

Expand Down