Use a queue to process bus messages
This commit is contained in:
Gregor Riepl
parent
4447e89c5e
commit
a9a074602d
5 changed files with 366 additions and 185 deletions
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@ -580,24 +580,22 @@ Wire Wire Line
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$Comp
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L Connector_Generic:Conn_01x02 J6
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U 1 1 50F5BE5A
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P 1200 2850
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P 850 2850
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AR Path="/50F5BE5A" Ref="J6" Part="1"
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AR Path="/50FF13A8/50F5BE5A" Ref="J6" Part="1"
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F 0 "J6" V 1150 2850 50 0000 C CNN
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F 1 "B3_Wago" V 1250 2850 40 0000 C CNN
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F 2 "TerminalBlock_WAGO:TerminalBlock_WAGO_236-402_1x02_P5.00mm_45Degree" H 1200 2850 60 0001 C CNN
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F 3 "" H 1200 2850 60 0001 C CNN
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F 4 "FAR 1283527" H 1200 2850 60 0001 C CNN "Reference"
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F 5 "0,84" H 1200 2850 60 0001 C CNN "prix"
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1 1200 2850
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F 0 "J6" V 800 2850 50 0000 C CNN
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F 1 "B3_Wago" V 900 2850 40 0000 C CNN
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F 2 "TerminalBlock_WAGO:TerminalBlock_WAGO_236-402_1x02_P5.00mm_45Degree" H 850 2850 60 0001 C CNN
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F 3 "" H 850 2850 60 0001 C CNN
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F 4 "FAR 1283527" H 850 2850 60 0001 C CNN "Reference"
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F 5 "0,84" H 850 2850 60 0001 C CNN "prix"
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1 850 2850
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-1 0 0 -1
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$EndComp
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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@ -796,22 +794,19 @@ F 3 "" H 2700 3600 50 0001 C CNN
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1 2700 3600
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1 0 0 -1
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$EndComp
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Connection ~ 9500 1750
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Wire Wire Line
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Wire Wire Line
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9500 1950 9700 1950
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Wire Wire Line
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9500 1750 9500 1950
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$Comp
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L power:+12V #PWR0175
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U 1 1 60094D63
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P 9500 1750
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F 0 "#PWR0175" H 9500 1600 50 0001 C CNN
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F 1 "+12V" H 9515 1923 50 0000 C CNN
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F 2 "" H 9500 1750 50 0001 C CNN
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F 3 "" H 9500 1750 50 0001 C CNN
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1 9500 1750
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P 9500 1550
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F 0 "#PWR0175" H 9500 1400 50 0001 C CNN
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F 1 "+12V" H 9515 1723 50 0000 C CNN
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F 2 "" H 9500 1550 50 0001 C CNN
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F 3 "" H 9500 1550 50 0001 C CNN
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1 9500 1550
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1 0 0 -1
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$EndComp
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Wire Wire Line
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@ -829,11 +824,6 @@ Wire Wire Line
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Connection ~ 9600 1650
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Wire Wire Line
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Connection ~ 9500 1350
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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$Comp
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@ -880,102 +870,195 @@ PFET_DRAIN
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$Comp
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L Regulator_Linear:LM7805_TO220 U1
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U 1 1 60125424
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P 7900 5750
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F 0 "U1" H 7900 5992 50 0000 C CNN
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F 1 "LM7805" H 7900 5901 50 0000 C CNN
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F 2 "Package_TO_SOT_SMD:SOT-223-3_TabPin2" H 7900 5975 50 0001 C CIN
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F 3 "https://www.onsemi.cn/PowerSolutions/document/MC7800-D.PDF" H 7900 5700 50 0001 C CNN
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1 7900 5750
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P 2450 5050
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F 0 "U1" H 2450 5292 50 0000 C CNN
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F 1 "LM7805" H 2450 5201 50 0000 C CNN
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F 2 "Package_TO_SOT_SMD:SOT-223-3_TabPin2" H 2450 5275 50 0001 C CIN
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F 3 "https://www.onsemi.cn/PowerSolutions/document/MC7800-D.PDF" H 2450 5000 50 0001 C CNN
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1 2450 5050
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1 0 0 -1
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$EndComp
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$Comp
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L power:+5V #PWR0176
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U 1 1 601266A6
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P 8650 5750
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F 0 "#PWR0176" H 8650 5600 50 0001 C CNN
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F 1 "+5V" H 8665 5923 50 0000 C CNN
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F 2 "" H 8650 5750 50 0001 C CNN
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F 3 "" H 8650 5750 50 0001 C CNN
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1 8650 5750
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P 3200 5050
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F 0 "#PWR0176" H 3200 4900 50 0001 C CNN
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F 1 "+5V" H 3215 5223 50 0000 C CNN
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F 2 "" H 3200 5050 50 0001 C CNN
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F 3 "" H 3200 5050 50 0001 C CNN
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1 3200 5050
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1 0 0 -1
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$EndComp
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$Comp
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L power:+12V #PWR0177
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U 1 1 60126C51
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P 7250 5750
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F 0 "#PWR0177" H 7250 5600 50 0001 C CNN
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F 1 "+12V" H 7265 5923 50 0000 C CNN
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F 2 "" H 7250 5750 50 0001 C CNN
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F 3 "" H 7250 5750 50 0001 C CNN
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1 7250 5750
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P 1800 5050
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F 0 "#PWR0177" H 1800 4900 50 0001 C CNN
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F 1 "+12V" H 1815 5223 50 0000 C CNN
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F 2 "" H 1800 5050 50 0001 C CNN
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F 3 "" H 1800 5050 50 0001 C CNN
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1 1800 5050
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1 0 0 -1
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$EndComp
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$Comp
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L Device:CP C?
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U 1 1 6012703D
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P 8650 5900
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P 3200 5200
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AR Path="/6012703D" Ref="C?" Part="1"
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AR Path="/50FF13A8/6012703D" Ref="C7" Part="1"
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F 0 "C7" H 8700 6200 50 0000 L CNN
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F 1 "10u" V 8800 5850 50 0000 L CNN
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F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.50mm" H 8650 5900 60 0001 C CNN
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F 3 "" H 8650 5900 60 0001 C CNN
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F 4 "RS703-7396" H 8650 5900 60 0001 C CNN "Reference"
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F 5 "0.864" H 8650 5900 60 0001 C CNN "prix"
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1 8650 5900
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F 0 "C7" H 3250 5500 50 0000 L CNN
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F 1 "10u" V 3350 5150 50 0000 L CNN
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F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.50mm" H 3200 5200 60 0001 C CNN
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F 3 "" H 3200 5200 60 0001 C CNN
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F 4 "RS703-7396" H 3200 5200 60 0001 C CNN "Reference"
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F 5 "0.864" H 3200 5200 60 0001 C CNN "prix"
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1 3200 5200
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1 0 0 -1
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$EndComp
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$Comp
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L Device:C C?
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U 1 1 6012763F
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P 8200 5900
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P 2750 5200
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AR Path="/6012763F" Ref="C?" Part="1"
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AR Path="/50FF13A8/6012763F" Ref="C6" Part="1"
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F 0 "C6" H 8350 6100 50 0000 L CNN
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F 1 "100n" H 8350 6000 50 0000 L CNN
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F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder" H 8550 5900 60 0001 C CNN
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F 3 "" H 8200 5900 60 0001 C CNN
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1 8200 5900
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F 0 "C6" H 2900 5400 50 0000 L CNN
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F 1 "100n" H 2900 5300 50 0000 L CNN
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F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder" H 3100 5200 60 0001 C CNN
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F 3 "" H 2750 5200 60 0001 C CNN
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1 2750 5200
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1 0 0 -1
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$EndComp
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Wire Wire Line
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8200 5750 8650 5750
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Connection ~ 8200 5750
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2750 5050 3200 5050
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Connection ~ 2750 5050
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Wire Wire Line
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8650 6050 8200 6050
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Connection ~ 7900 6050
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Connection ~ 2450 5350
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Wire Wire Line
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7900 6050 7250 6050
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Connection ~ 8200 6050
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2450 5350 1800 5350
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Connection ~ 2750 5350
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Wire Wire Line
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8200 6050 7900 6050
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Wire Wire Line
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Connection ~ 7250 5750
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Connection ~ 8650 5750
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Connection ~ 1800 5050
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Connection ~ 3200 5050
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$Comp
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L Device:C C?
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U 1 1 60127A01
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P 7250 5900
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P 1800 5200
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AR Path="/60127A01" Ref="C?" Part="1"
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AR Path="/50FF13A8/60127A01" Ref="C5" Part="1"
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F 0 "C5" H 7400 6100 50 0000 L CNN
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F 1 "100n" H 7400 6000 50 0000 L CNN
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F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder" H 7600 5900 60 0001 C CNN
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F 3 "" H 7250 5900 60 0001 C CNN
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1 7250 5900
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F 0 "C5" H 1950 5400 50 0000 L CNN
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F 1 "330n" H 1950 5300 50 0000 L CNN
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F 2 "Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder" H 2150 5200 60 0001 C CNN
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F 3 "" H 1800 5200 60 0001 C CNN
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1 1800 5200
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1 0 0 -1
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$EndComp
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$Comp
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L power:GND #PWR0179
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U 1 1 600EBFC5
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P 7250 6050
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F 0 "#PWR0179" H 7250 5800 50 0001 C CNN
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F 1 "GND" H 7255 5877 50 0000 C CNN
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F 2 "" H 7250 6050 50 0001 C CNN
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F 3 "" H 7250 6050 50 0001 C CNN
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1 7250 6050
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P 1800 5350
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F 0 "#PWR0179" H 1800 5100 50 0001 C CNN
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F 1 "GND" H 1805 5177 50 0000 C CNN
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F 2 "" H 1800 5350 50 0001 C CNN
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F 3 "" H 1800 5350 50 0001 C CNN
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1 1800 5350
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1 0 0 -1
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$EndComp
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Connection ~ 7250 6050
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Connection ~ 1800 5350
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$Comp
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L power:+5V #PWR?
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U 1 1 60130758
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P 9500 1950
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F 0 "#PWR?" H 9500 1800 50 0001 C CNN
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F 1 "+5V" H 9515 2123 50 0000 C CNN
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F 2 "" H 9500 1950 50 0001 C CNN
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F 3 "" H 9500 1950 50 0001 C CNN
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1 9500 1950
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1 0 0 -1
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$EndComp
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Wire Wire Line
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Wire Wire Line
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9500 1550 9500 1750
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Connection ~ 9500 1550
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$Comp
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L power:LINE #PWR?
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U 1 1 6013AC53
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P 1200 2250
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F 0 "#PWR?" H 1200 2100 50 0001 C CNN
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F 1 "LINE" H 1215 2423 50 0000 C CNN
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F 2 "" H 1200 2250 50 0001 C CNN
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F 3 "" H 1200 2250 50 0001 C CNN
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1 1200 2250
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1 0 0 -1
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$EndComp
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$Comp
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L Device:Polyfuse F?
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U 1 1 6013BA9D
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P 1700 2700
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F 0 "F?" V 1475 2700 50 0000 C CNN
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F 1 "2A" V 1566 2700 50 0000 C CNN
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F 2 "" H 1750 2500 50 0001 L CNN
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F 3 "~" H 1700 2700 50 0001 C CNN
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1 1700 2700
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0 1 1 0
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$EndComp
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Wire Wire Line
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1850 2700 1950 2700
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Wire Wire Line
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1950 2700 1950 2850
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Connection ~ 1950 2850
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Wire Wire Line
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1950 2850 2200 2850
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Wire Wire Line
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Wire Wire Line
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1450 2700 1450 2850
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Connection ~ 1450 2850
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$Comp
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L Device:Jumper JP?
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U 1 1 60146B55
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P 1200 2550
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F 0 "JP?" V 1154 2677 50 0000 L CNN
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F 1 "AC" V 1245 2677 50 0000 L CNN
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F 2 "" H 1200 2550 50 0001 C CNN
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F 3 "~" H 1200 2550 50 0001 C CNN
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1 1200 2550
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0 1 1 0
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$EndComp
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Wire Wire Line
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Connection ~ 1200 2850
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Wire Wire Line
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1200 2850 1450 2850
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$Comp
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L Device:Jumper JP?
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U 1 1 6014CA6B
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P 1200 3250
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F 0 "JP?" V 1246 3162 50 0000 R CNN
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F 1 "AC" V 1155 3162 50 0000 R CNN
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F 2 "" H 1200 3250 50 0001 C CNN
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F 3 "~" H 1200 3250 50 0001 C CNN
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1 1200 3250
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0 -1 -1 0
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$EndComp
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Wire Wire Line
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Connection ~ 1200 2950
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Wire Wire Line
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1200 2950 2700 2950
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$Comp
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L power:NEUT #PWR?
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U 1 1 60152DC7
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P 1200 3550
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F 0 "#PWR?" H 1200 3400 50 0001 C CNN
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F 1 "NEUT" H 1215 3723 50 0000 C CNN
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F 2 "" H 1200 3550 50 0001 C CNN
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F 3 "" H 1200 3550 50 0001 C CNN
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1 1200 3550
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-1 0 0 1
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$EndComp
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$EndSCHEMATC
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@ -220,6 +220,28 @@ X ~ 2 0 -150 50 U 50 50 1 1 P
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ENDDRAW
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ENDDEF
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#
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# Device_Jumper
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#
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DEF Device_Jumper JP 0 30 Y N 1 F N
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F0 "JP" 0 150 50 H V C CNN
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F1 "Device_Jumper" 0 -80 50 H V C CNN
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F2 "" 0 0 50 H I C CNN
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F3 "" 0 0 50 H I C CNN
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$FPLIST
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SolderJumper*
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Jumper*
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TestPoint*2Pads*
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TestPoint*Bridge*
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$ENDFPLIST
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DRAW
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A 0 -26 125 1426 373 0 1 0 N -98 50 99 50
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C -100 0 35 0 1 0 N
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C 100 0 35 0 1 0 N
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X 1 1 -300 0 165 R 50 50 0 1 P
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X 2 2 300 0 165 L 50 50 0 1 P
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ENDDRAW
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ENDDEF
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#
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# Device_L
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#
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DEF Device_L L 0 40 N N 1 F N
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@ -243,6 +265,26 @@ X 2 2 0 -150 50 U 50 50 1 1 P
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ENDDRAW
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ENDDEF
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#
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# Device_Polyfuse
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#
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DEF Device_Polyfuse F 0 0 N Y 1 F N
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F0 "F" -100 0 50 V V C CNN
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F1 "Device_Polyfuse" 100 0 50 V V C CNN
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F2 "" 50 -200 50 H I L CNN
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F3 "" 0 0 50 H I C CNN
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$FPLIST
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*polyfuse*
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*PTC*
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$ENDFPLIST
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DRAW
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S -30 100 30 -100 0 1 10 N
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P 2 0 1 0 0 100 0 -100 N
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P 4 0 1 0 -60 100 -60 60 60 -60 60 -100 N
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X ~ 1 0 150 50 D 50 50 1 1 P
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X ~ 2 0 -150 50 U 50 50 1 1 P
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ENDDRAW
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ENDDEF
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#
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# Device_Q_NPN_BCE
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#
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DEF Device_Q_NPN_BCE Q 0 0 Y N 1 F N
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200
uncanny/can.go
200
uncanny/can.go
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@ -7,8 +7,12 @@ import (
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"github.com/brutella/can"
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)
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const queueSize = 10
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type Can struct {
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bus *can.Bus
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queue chan func()
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swstate FeedbackMessage
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dispstate int
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}
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@ -20,112 +24,154 @@ func NewCan(intf string) (*Can, error) {
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}
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can := &Can{
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bus: bus,
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queue: make(chan func(), queueSize),
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dispstate: -1,
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}
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bus.Subscribe(can)
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return can, nil
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}
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func (c *Can) Start() {
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go func() {
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// send the init sequence, but (hopefully) defer until after we start listening
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// FIXME this is inherently racy :(
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go c.initialize()
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// ConnectAndPublish will block, so we'll just leave the Printf hanging here
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log.Printf("CAN bus shut down: %v", c.bus.ConnectAndPublish())
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}()
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func (c *Can) Start() error {
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go c.process()
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log.Printf("Starting bus listener")
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return c.bus.ConnectAndPublish()
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}
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func (c *Can) Stop() {
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c.bus.Disconnect()
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func (c *Can) process() {
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running := true
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log.Printf("Starting processing queue")
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for running {
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select {
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case fn, ok := <-c.queue:
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if ok {
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fn()
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} else {
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running = false
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}
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}
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}
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for range c.queue {}
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log.Printf("Processing queue shut down")
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}
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func (c *Can) Stop() error {
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log.Printf("Shutting down processing queue and bus listener")
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close(c.queue)
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return c.bus.Disconnect()
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}
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func (c *Can) Handle(frame can.Frame) {
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log.Printf("Got CAN frame to 0x%08x", frame.ID)
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typ, obj, err := DecodeMessage(frame)
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if err != nil {
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||||
if err == UnsupportedMessageType {
|
||||
log.Printf("Unsupported message type: 0x%08x", frame.ID)
|
||||
} else {
|
||||
log.Printf("Cannot decode message: %v", err)
|
||||
}
|
||||
} else {
|
||||
switch typ {
|
||||
case MessageTypeFeedback:
|
||||
log.Printf("Got feedback message: %+v", obj.(FeedbackMessage))
|
||||
log.Printf("Data: 0x%02x 0x%02x", frame.Data[0], frame.Data[1])
|
||||
c.swstate = obj.(FeedbackMessage)
|
||||
// when all end switches are off: send stop command
|
||||
if !c.swstate.EndD && !c.swstate.EndE && !c.swstate.EndF && !c.swstate.EndG && !c.swstate.EndH {
|
||||
log.Printf("All end switches off, stopping dispenser")
|
||||
c.Cancel()
|
||||
c.queue <- func() {
|
||||
log.Printf("Got CAN frame to 0x%08x", frame.ID)
|
||||
typ, obj, err := DecodeMessage(frame)
|
||||
if err != nil {
|
||||
if err == UnsupportedMessageType {
|
||||
log.Printf("Unsupported message type: 0x%08x", frame.ID)
|
||||
} else {
|
||||
log.Printf("Cannot decode message: %v", err)
|
||||
}
|
||||
} else {
|
||||
switch typ {
|
||||
case MessageTypeFeedback:
|
||||
log.Printf("Got feedback message: %+v", obj.(FeedbackMessage))
|
||||
log.Printf("Data: 0x%02x 0x%02x", frame.Data[0], frame.Data[1])
|
||||
c.swstate = obj.(FeedbackMessage)
|
||||
// when all end switches are off: send stop command
|
||||
if !c.swstate.EndD && !c.swstate.EndE && !c.swstate.EndF && !c.swstate.EndG && !c.swstate.EndH {
|
||||
log.Printf("All end switches off, stopping dispenser")
|
||||
c.Cancel()
|
||||
}
|
||||
case MessageTypeFeedbackRequest:
|
||||
// ignore
|
||||
case MessageTypePower:
|
||||
log.Printf("Got power message: %+v", obj.(PowerMessage))
|
||||
// ignore
|
||||
case MessageTypePowerRequest:
|
||||
// ignore
|
||||
case MessageTypeDispense:
|
||||
log.Printf("Got dispense message: %+v", obj.(DispenseMessage))
|
||||
c.dispstate = obj.(DispenseMessage).Slot
|
||||
case MessageTypeAuto:
|
||||
// ignore
|
||||
}
|
||||
case MessageTypeFeedbackRequest:
|
||||
// ignore
|
||||
case MessageTypePower:
|
||||
log.Printf("Got power message: %+v", obj.(PowerMessage))
|
||||
// ignore
|
||||
case MessageTypePowerRequest:
|
||||
// ignore
|
||||
case MessageTypeDispense:
|
||||
log.Printf("Got dispense message: %+v", obj.(DispenseMessage))
|
||||
c.dispstate = obj.(DispenseMessage).Slot
|
||||
case MessageTypeAuto:
|
||||
// ignore
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (c *Can) IsEmpty(slot int) bool {
|
||||
switch (slot) {
|
||||
case 0:
|
||||
return c.swstate.EmptyD
|
||||
case 1:
|
||||
return c.swstate.EmptyE
|
||||
case 2:
|
||||
return c.swstate.EmptyF
|
||||
case 3:
|
||||
return c.swstate.EmptyG
|
||||
case 4:
|
||||
return c.swstate.EmptyH
|
||||
ret := make(chan bool)
|
||||
c.queue <- func() {
|
||||
switch (slot) {
|
||||
case 0:
|
||||
ret <- c.swstate.EmptyD
|
||||
case 1:
|
||||
ret <- c.swstate.EmptyE
|
||||
case 2:
|
||||
ret <- c.swstate.EmptyF
|
||||
case 3:
|
||||
ret <- c.swstate.EmptyG
|
||||
case 4:
|
||||
ret <- c.swstate.EmptyH
|
||||
}
|
||||
ret <- false
|
||||
}
|
||||
return false
|
||||
return <-ret
|
||||
}
|
||||
|
||||
func (c *Can) IsDispensing(slot int) bool {
|
||||
switch (slot) {
|
||||
case 0:
|
||||
return c.swstate.EndD
|
||||
case 1:
|
||||
return c.swstate.EndE
|
||||
case 2:
|
||||
return c.swstate.EndF
|
||||
case 3:
|
||||
return c.swstate.EndG
|
||||
case 4:
|
||||
return c.swstate.EndH
|
||||
ret := make(chan bool)
|
||||
c.queue <- func() {
|
||||
switch (slot) {
|
||||
case 0:
|
||||
ret <- c.swstate.EndD
|
||||
case 1:
|
||||
ret <- c.swstate.EndE
|
||||
case 2:
|
||||
ret <- c.swstate.EndF
|
||||
case 3:
|
||||
ret <- c.swstate.EndG
|
||||
case 4:
|
||||
ret <- c.swstate.EndH
|
||||
}
|
||||
ret <- false
|
||||
}
|
||||
return false
|
||||
return <-ret
|
||||
}
|
||||
|
||||
func (c *Can) ActiveDispenser() int {
|
||||
return c.dispstate
|
||||
ret := make(chan int)
|
||||
c.queue <- func() {
|
||||
ret <- c.dispstate
|
||||
}
|
||||
return <- ret
|
||||
}
|
||||
|
||||
func (c *Can) Dispense(slot int) error {
|
||||
log.Printf("Starting dispense on slot %d", slot)
|
||||
return c.bus.Publish(DispenseMessage{slot}.Encode())
|
||||
func (c *Can) Dispense(slot int) {
|
||||
c.queue <- func() {
|
||||
log.Printf("Starting dispense on slot %d", slot)
|
||||
err := c.bus.Publish(DispenseMessage{slot}.Encode())
|
||||
if err != nil {
|
||||
log.Printf("Error sending dispense command: %v", err)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (c *Can) Cancel() error {
|
||||
log.Printf("Stopping dispense")
|
||||
return c.bus.Publish(DispenseMessage{DispenseSlotOff}.Encode())
|
||||
func (c *Can) Cancel() {
|
||||
c.queue <- func() {
|
||||
log.Printf("Stopping dispense")
|
||||
err := c.bus.Publish(DispenseMessage{DispenseSlotOff}.Encode())
|
||||
if err != nil {
|
||||
log.Printf("Error sending stop command: %v", err)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (c *Can) initialize() {
|
||||
log.Printf("Initializing")
|
||||
// enable automatic status updates
|
||||
c.bus.Publish(AutoMessage{true}.Encode())
|
||||
c.bus.Publish(RequestFeedbackMessage())
|
||||
c.bus.Publish(RequestPowerMessage())
|
||||
func (c *Can) Initialize() {
|
||||
c.queue <- func() {
|
||||
log.Printf("Initializing devices")
|
||||
// enable automatic status updates
|
||||
c.bus.Publish(AutoMessage{true}.Encode())
|
||||
c.bus.Publish(RequestFeedbackMessage())
|
||||
c.bus.Publish(RequestPowerMessage())
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -4,6 +4,7 @@ import (
|
|||
"flag"
|
||||
"git.kabelsalat.ch/seto/matemat/uncanny"
|
||||
"log"
|
||||
"sync"
|
||||
)
|
||||
|
||||
const (
|
||||
|
|
@ -21,7 +22,20 @@ func main() {
|
|||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
server := uncanny.NewServer(can)
|
||||
server := uncanny.NewServer(can, addr)
|
||||
can.Start()
|
||||
log.Fatal(server.ListenAndServe(addr))
|
||||
wg := sync.WaitGroup{}
|
||||
wg.Add(2)
|
||||
go func() {
|
||||
log.Printf("Server exited: %v", server.Start())
|
||||
wg.Done()
|
||||
can.Stop()
|
||||
}()
|
||||
go func() {
|
||||
log.Printf("Bus listener exited: %v", can.Start())
|
||||
wg.Done()
|
||||
server.Stop()
|
||||
}()
|
||||
wg.Wait()
|
||||
log.Printf("Shut down")
|
||||
}
|
||||
|
|
|
|||
|
|
@ -15,15 +15,20 @@ const (
|
|||
|
||||
type Server struct {
|
||||
*http.ServeMux
|
||||
srv *http.Server
|
||||
can *Can
|
||||
}
|
||||
|
||||
func NewServer(can *Can) *Server {
|
||||
func NewServer(can *Can, addr string) *Server {
|
||||
ret := &Server{
|
||||
ServeMux: http.NewServeMux(),
|
||||
can: can,
|
||||
srv: &http.Server{
|
||||
Addr: addr,
|
||||
},
|
||||
}
|
||||
ret.registerHandlers()
|
||||
ret.srv.Handler = ret
|
||||
return ret
|
||||
}
|
||||
|
||||
|
|
@ -39,17 +44,10 @@ func (s *Server) registerHandlers() {
|
|||
log.Printf("Invalid slot number: %d", slot)
|
||||
http.Error(rw, http.StatusText(http.StatusBadRequest), http.StatusBadRequest)
|
||||
} else {
|
||||
err = s.can.Dispense(int(slot))
|
||||
if err != nil {
|
||||
log.Printf("Error sending dispense command: %v", err)
|
||||
rw.Header().Set("Content-Type", "text/plain")
|
||||
rw.WriteHeader(http.StatusServiceUnavailable)
|
||||
fmt.Fprintf(rw, "%d error", slot)
|
||||
} else {
|
||||
rw.Header().Set("Content-Type", "text/plain")
|
||||
rw.WriteHeader(http.StatusOK)
|
||||
fmt.Fprintf(rw, "%d dispense", slot)
|
||||
}
|
||||
s.can.Dispense(int(slot))
|
||||
rw.Header().Set("Content-Type", "text/plain")
|
||||
rw.WriteHeader(http.StatusOK)
|
||||
fmt.Fprintf(rw, "%d dispensing", slot)
|
||||
}
|
||||
} else {
|
||||
log.Printf("Mismatched path: %s", r.URL.Path)
|
||||
|
|
@ -57,17 +55,10 @@ func (s *Server) registerHandlers() {
|
|||
}
|
||||
})
|
||||
s.HandleFunc("/stop", func(rw http.ResponseWriter, r *http.Request) {
|
||||
err := s.can.Cancel()
|
||||
if err != nil {
|
||||
log.Printf("Error sending stop command: %v", err)
|
||||
rw.Header().Set("Content-Type", "text/plain")
|
||||
rw.WriteHeader(http.StatusServiceUnavailable)
|
||||
fmt.Fprintf(rw, "error")
|
||||
} else {
|
||||
rw.Header().Set("Content-Type", "text/plain")
|
||||
rw.WriteHeader(http.StatusOK)
|
||||
fmt.Fprintf(rw, "stopped")
|
||||
}
|
||||
s.can.Cancel()
|
||||
rw.Header().Set("Content-Type", "text/plain")
|
||||
rw.WriteHeader(http.StatusOK)
|
||||
fmt.Fprintf(rw, "stopping")
|
||||
})
|
||||
s.HandleFunc("/level/", func(rw http.ResponseWriter, r *http.Request) {
|
||||
if matched, _ := path.Match("/level/[0-9]*", r.URL.Path); matched {
|
||||
|
|
@ -117,6 +108,11 @@ func (s *Server) registerHandlers() {
|
|||
})
|
||||
}
|
||||
|
||||
func (s *Server) ListenAndServe(addr string) error {
|
||||
return http.ListenAndServe(addr, s)
|
||||
func (s *Server) Start() error {
|
||||
log.Printf("Listening on %v", s.srv.Addr)
|
||||
return s.srv.ListenAndServe()
|
||||
}
|
||||
|
||||
func (s *Server) Stop() error {
|
||||
return s.srv.Close()
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue