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In the ExecResponse, store the event in the Output instead of message
data, so the server can iterate the Output directly and pass it to
WriteEvent directly.
The event ID now start at 1 with type "begin".
This is to minimize confusion when comparing empty Last-Event-ID from
client, which is equal to 0.
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Using dummy date make the test output hard to read in verbose option,
because the program logs mixed with the test logs.
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The HTTP API for stopping execution have the following signature,
DELETE /awwan/api/execute?id=<string>
If the ID is exist, the execution will be cancelled and return HTTP
status 200 with the following body,
Content-Type: application/json
{
"code": 200,
}
Otherwise it will return HTTP status 404 with error message.
References: https://todo.sr.ht/~shulhan/awwan/9
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Using "-" as dummy date-time prefix make the test output quite hard
to read, especially since we use the same prefix "===" and "---" with Go
test output.
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The execute directory is used as base directory of awwan during
testing APIExecute.
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Previously, if the command output is "line1\n\nline2\n", the web output
it as
line1
line2
it should be
line1
line2
This fix the empty line not displayed in wui output.
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Since each execution now logged in the file with ".log" extension,
there is no need to prefix it with script name again, because its
redundant.
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In "/awwan/api/execute/tail" SSE endpoint, in order for client to be able
to reconnect and start streaming from the last know output, we need to
send the ID for each message that we send.
The ID is the index of Output in slice.
If client does not send Last-Event-ID, we send all Output from beginning,
otherwise, we send only message start from index in Last-Event-ID.
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The new API is "GET /awwan/api/execute/tail" that implement Server-sent
events, not a normal GET request.
Its accept the query parameter "id" with value is the execution ID
from "/awwan/api/execute".
Once called with valid ID, it will streaming the command output
to client.
By using this new API, the WUI can receive the output of command
immediately without waiting for all commands to be completed.
Implements: https://todo.sr.ht/~shulhan/awwan/5
Signed-off-by: Shulhan <ms@kilabit.info>
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Previously, the Execute endpoint wait for command execution to finish.
In case the command takes longer than proxy or server write timeout, it
will return with an timeout error to client.
In this changes, we generate an execution ID for each request and return
it immediately.
The next commit will implement HTTP endpoint to fetch the latest status
and/or output by execution ID.
References: https://todo.sr.ht/~shulhan/awwan/5
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