summaryrefslogtreecommitdiff
path: root/scripts/context/lua/mtx-watch.lua
blob: f9e81da4257166d512cd8f61c8b4c7132b2a7440 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
if not modules then modules = { } end modules ['mtx-watch'] = {
    version   = 1.001,
    comment   = "companion to mtxrun.lua",
    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
    copyright = "PRAGMA ADE / ConTeXt Development Team",
    license   = "see context related readme files"
}

texmf.instance = instance -- we need to get rid of this / maybe current instance in global table

scripts       = scripts       or { }
scripts.watch = scripts.watch or { }

do

    function scripts.watch.watch()
        local delay   = environment.argument("delay")   or 5
        local logpath = environment.argument("logpath") or ""
        local pipe    = environment.argument("pipe")    or false
        if #environment.files > 0 then
            for _, path in ipairs(environment.files) do
                logs.report("watch", "watching path ".. path)
            end
            local function glob(files,path)
                for name in lfs.dir(path) do
                    if name:find("^%.") then
                        -- skip . and ..
                    else
                        name = path .. "/" .. name
                        local a = lfs.attributes(name)
                        if not a then
                            -- weird
                        elseif a.mode == "directory" then
                            if name:find("graphics$") or name:find("figures$") or name:find("resources$") then
                                -- skip these too
                            else
                                glob(files,name)
                            end
                        elseif name:find(".%luj$") then
                            files[name] = a.change or a.ctime or a.modification or a.mtime
                        end
                    end
                end
            end
            local function process()
                local done = false
                for _, path in ipairs(environment.files) do
                    lfs.chdir(path)
                    local files = { }
                    glob(files,path)
                    table.sort(files) -- what gets sorted here
                    for name, time in pairs(files) do
                    --~ local ok, joblog = xpcall(function() return dofile(name) end, function() end )
                        local ok, joblog = pcall(dofile,name)
                        if ok and joblog then
                            if joblog.status == "processing" then
                                logs.report("watch",string.format("aborted job, %s added to queue",name))
                                joblog.status = "queued"
                                io.savedata(name, table.serialize(joblog,true))
                            elseif joblog.status == "queued" then
                                local command = joblog.command
                                if command then
                                    local replacements = {
                                        inputpath  = (joblog.paths and joblog.paths.input ) or ".",
                                        outputpath = (joblog.paths and joblog.paths.output) or ".",
                                        filename   = joblog.filename or "",
                                    }
                                    command = command:gsub("%%(.-)%%", replacements)
                                    if command ~= "" then
                                        joblog.status = "processing"
                                        joblog.runtime = os.time() -- os.clock()
                                        io.savedata(name, table.serialize(joblog,true))
                                        logs.report("watch",string.format("running: %s", command))
                                        local newpath = file.dirname(name)
                                        io.flush()
                                        local result = ""
                                        if newpath ~= "" and newpath ~= "." then
                                            local oldpath = lfs.currentdir()
                                            lfs.chdir(newpath)
                                            if pipe then result = os.resultof(command) else result = os.spawn(command) end
                                            lfs.chdir(oldpath)
                                        else
                                            if pipe then result = os.resultof(command) else result = os.spawn(command) end
                                        end
                                        logs.report("watch",string.format("return value: %s", result))
                                        done = true
                                        local path, base = replacements.outputpath, file.basename(replacements.filename)
                                        joblog.runtime = os.time() - joblog.runtime -- os.clock() - joblog.runtime
                                        joblog.result  = file.replacesuffix(file.join(path,base),"pdf")
                                        joblog.size    = lfs.attributes(joblog.result,"size")
                                        joblog.status  = "finished"
                                    else
                                        joblog.status = "invalid command"
                                    end
                                else
                                    joblog.status = "no command"
                                end
                                -- pcall, when error sleep + again
                                io.savedata(name, table.serialize(joblog,true))
                                if logpath ~= "" then
                                    local name = string.format("%s/%s%04i%09i.lua", logpath, os.time(), math.floor((os.clock()*100)%1000), math.random(99999999))
                                    io.savedata(name, table.serialize(joblog,true))
                                    logs.report("watch", "saving joblog ".. name)
                                end
                            end
                        end
                    end
                end
            end
            local n, start = 0, os.clock()
            local function wait()
                io.flush()
                if not done then
                    n = n + 1
                    if n >= 10 then
                        logs.report("watch", string.format("run time: %i seconds, memory usage: %0.3g MB", os.clock() - start, (status.luastate_bytes/1024)/1000))
                        n = 0
                    end
                    os.sleep(delay)
                end
            end
            while true do
                pcall(process)
                pcall(wait)
            end
        else
            logs.report("watch", "no paths to watch")
        end
    end

end

function scripts.watch.collect_logs(path) -- clean 'm up too
    path = path or environment.argument("logpath") or ""
    path = (path == "" and ".") or path
    local files = dir.globfiles(path,false,"^%d+%.lua$")
    local collection = { }
    local valid = table.tohash({"filename","result","runtime","size","status"})
    for _, name in ipairs(files) do
        local t = dofile(name)
        if t and type(t) == "table" and t.status then
            for k, v in pairs(t) do
                if not valid[k] then
                    t[k] = nil
                end
            end
            collection[name:gsub("[^%d]","")] = t
        end
    end
    return collection
end

function scripts.watch.save_logs(collection,path) -- play safe
    if collection and not table.is_empty(collection) then
        path = path or environment.argument("logpath") or ""
        path = (path == "" and ".") or path
        local filename = string.format("%s/collected-%s.lua",path,tostring(os.time()))
        io.savedata(filename,table.serialize(collection,true))
        local check = dofile(filename)
        for k,v in pairs(check) do
            if not collection[k] then
                logs.error("watch", "error in saving file")
                os.remove(filename)
                return false
            end
        end
        for k,v in pairs(check) do
            os.remove(string.format("%s.lua",k))
        end
        return true
    else
        return false
    end
end

function scripts.watch.collect_collections(path) -- removes duplicates
    path = path or environment.argument("logpath") or ""
    path = (path == "" and ".") or path
    local files = dir.globfiles(path,false,"^collected%-%d+%.lua$")
    local collection = { }
    for _, name in ipairs(files) do
        local t = dofile(name)
        if t and type(t) == "table" then
            for k, v in pairs(t) do
                collection[k] = v
            end
        end
    end
    return collection
end

function scripts.watch.show_logs(path) -- removes duplicates
    local collection = scripts.watch.collect_collections(path) or { }
    local max = 0
    for k,v in pairs(collection) do
        v = v.filename or "?"
        if #v > max then max = #v end
    end
    print(max)
    for k,v in ipairs(table.sortedkeys(collection)) do
        local c = collection[v]
        local f, s, r, n = c.filename or "?", c.status or "?", c.runtime or 0, c.size or 0
        logs.report("watch", string.format("%s  %s  %3i  %8i  %s",string.padd(f,max," "),string.padd(s,10," "),r,n,v))
    end
end

banner = banner .. " | watchdog"

messages.help = [[
--logpath             optional path for log files
--watch               watch given path
--pipe                use pipe instead of execute
--delay               delay between sweeps
--collect             condense log files
--showlog             show log data
]]

input.verbose = true

if environment.argument("watch") then
    scripts.watch.watch()
elseif environment.argument("collect") then
    scripts.watch.save_logs(scripts.watch.collect_logs())
elseif environment.argument("showlog") then
    scripts.watch.show_logs()
else
    input.help(banner,messages.help)
end