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better handling of invocationtargetexception #968

Merged
merged 3 commits into from
Jul 5, 2018
Merged

better handling of invocationtargetexception #968

merged 3 commits into from
Jul 5, 2018

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SrinivasanTarget
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Better handling of invocationtargetexception thrown during creating session

Thanks @iddol.

Types of changes

What types of changes are you proposing/introducing to Java client?
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  • No changes in production code.
  • Bugfix (non-breaking change which fixes an issue)
  • New feature (non-breaking change which adds functionality)
  • Breaking change (fix or feature that would cause existing functionality to not work as expected)

@mykola-mokhnach FYI

Throwable cause = e.getCause();
throw new SessionNotCreatedException(
format("Unable to create new remote session. desired capabilities = %s"
+ "and reason is " + cause.getMessage(), desired));
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why not to use format specifiers for both arguments?

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Also, it might be handy to pass the original exception as cause constructor argument, so it would be easier to debug it.

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Throwable cause = e.getCause();
                        throw new SessionNotCreatedException(
                                format("Unable to create new remote session. desired capabilities = %s"
                                        + "and reason is %s", desired, cause != null ? cause.getMessage() : null,
                                        e.getTargetException()));

@mykola-mokhnach Do you mean it this way?

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@mykola-mokhnach mykola-mokhnach Jul 5, 2018

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almost. It's just instead of setting reason to null if cause is null you set it to the original exception value

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also SessionNotCreatedException has the second constructor where one can provide the cause:

SessionNotCreatedException(String msg, Throwable cause)

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Yeah i used the same constructor above.

throw new WebDriverException(format("It is impossible to create a new session "
+ "because 'createSession' which takes %s, %s and %s was not found "
+ "or it is not accessible",
HttpClient.class.getSimpleName(),
InputStream.class.getSimpleName(),
long.class.getSimpleName()), e);
} catch (InvocationTargetException e) {
Throwable cause = e.getCause();
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can it be that getCause returns null?

throw new SessionNotCreatedException(
format("Unable to create new remote session. desired capabilities = %s"
+ "and reason is " + cause.getMessage(), desired));
format("Unable to create new remote session. desired capabilities = %s", desired), e);
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desired capabilities = %s -> Desired capabilities: %s

@SrinivasanTarget SrinivasanTarget merged commit 3c05402 into appium:master Jul 5, 2018
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2 participants